diff --git a/IntegrationTests/AccessibilityManagerTest.js b/IntegrationTests/AccessibilityManagerTest.js
index 313b8990346..dd155cec22c 100644
--- a/IntegrationTests/AccessibilityManagerTest.js
+++ b/IntegrationTests/AccessibilityManagerTest.js
@@ -18,7 +18,7 @@ const {TestModule} = ReactNative.NativeModules;
 import NativeAccessibilityManager from 'react-native/Libraries/Components/AccessibilityInfo/NativeAccessibilityManager';
 import invariant from 'invariant';
 
-class AccessibilityManagerTest extends React.Component<{}> {
+class AccessibilityManagerTest extends React.Component<{...}> {
   componentDidMount() {
     invariant(
       NativeAccessibilityManager,
diff --git a/IntegrationTests/AppEventsTest.js b/IntegrationTests/AppEventsTest.js
index 4bc0b0649c1..650203ed233 100644
--- a/IntegrationTests/AppEventsTest.js
+++ b/IntegrationTests/AppEventsTest.js
@@ -19,14 +19,19 @@ const deepDiffer = require('react-native/Libraries/Utilities/differ/deepDiffer')
 
 const TEST_PAYLOAD = {foo: 'bar'};
 
-type AppEvent = {data: Object, ts: number};
+type AppEvent = {
+  data: Object,
+  ts: number,
+  ...
+};
 type State = {
   sent: 'none' | AppEvent,
   received: 'none' | AppEvent,
   elapsed?: string,
+  ...
 };
 
-class AppEventsTest extends React.Component<{}, State> {
+class AppEventsTest extends React.Component<{...}, State> {
   state: State = {sent: 'none', received: 'none'};
 
   componentDidMount() {
diff --git a/IntegrationTests/AsyncStorageTest.js b/IntegrationTests/AsyncStorageTest.js
index 070e711b7e5..e33cedfdd82 100644
--- a/IntegrationTests/AsyncStorageTest.js
+++ b/IntegrationTests/AsyncStorageTest.js
@@ -171,7 +171,7 @@ function testOptimizedMultiGet() {
   });
 }
 
-class AsyncStorageTest extends React.Component<{}, $FlowFixMeState> {
+class AsyncStorageTest extends React.Component<{...}, $FlowFixMeState> {
   state: any | {|done: boolean, messages: string|} = {
     messages: 'Initializing...',
     done: false,
diff --git a/IntegrationTests/GlobalEvalWithSourceUrlTest.js b/IntegrationTests/GlobalEvalWithSourceUrlTest.js
index 0fd59bc2644..52fbe0e2fa8 100644
--- a/IntegrationTests/GlobalEvalWithSourceUrlTest.js
+++ b/IntegrationTests/GlobalEvalWithSourceUrlTest.js
@@ -17,7 +17,7 @@ const {View} = ReactNative;
 
 const {TestModule} = ReactNative.NativeModules;
 
-class GlobalEvalWithSourceUrlTest extends React.Component<{}> {
+class GlobalEvalWithSourceUrlTest extends React.Component<{...}> {
   componentDidMount() {
     if (typeof global.globalEvalWithSourceUrl !== 'function') {
       throw new Error(
diff --git a/IntegrationTests/ImageCachePolicyTest.js b/IntegrationTests/ImageCachePolicyTest.js
index e3c6556d2b1..03857091072 100644
--- a/IntegrationTests/ImageCachePolicyTest.js
+++ b/IntegrationTests/ImageCachePolicyTest.js
@@ -27,12 +27,13 @@ const {TestModule} = ReactNative.NativeModules;
 
 const TESTS = ['only-if-cached', 'default', 'reload', 'force-cache'];
 
-type Props = {};
+type Props = {...};
 type State = {
   'only-if-cached'?: boolean,
   default?: boolean,
   reload?: boolean,
   'force-cache'?: boolean,
+  ...
 };
 
 class ImageCachePolicyTest extends React.Component<Props, $FlowFixMeState> {
diff --git a/IntegrationTests/ImageSnapshotTest.js b/IntegrationTests/ImageSnapshotTest.js
index 495423ae006..cff8a5adb59 100644
--- a/IntegrationTests/ImageSnapshotTest.js
+++ b/IntegrationTests/ImageSnapshotTest.js
@@ -15,7 +15,7 @@ const ReactNative = require('react-native');
 const {Image} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
-class ImageSnapshotTest extends React.Component<{}> {
+class ImageSnapshotTest extends React.Component<{...}> {
   componentDidMount() {
     if (!TestModule.verifySnapshot) {
       throw new Error('TestModule.verifySnapshot not defined.');
diff --git a/IntegrationTests/IntegrationTestsApp.js b/IntegrationTests/IntegrationTestsApp.js
index c8af81bf126..c52fe515221 100644
--- a/IntegrationTests/IntegrationTestsApp.js
+++ b/IntegrationTests/IntegrationTestsApp.js
@@ -51,7 +51,7 @@ require('./LoggingTestModule');
 
 type Test = any;
 
-class IntegrationTestsApp extends React.Component<{}, $FlowFixMeState> {
+class IntegrationTestsApp extends React.Component<{...}, $FlowFixMeState> {
   state = {
     test: (null: ?Test),
   };
diff --git a/IntegrationTests/LayoutEventsTest.js b/IntegrationTests/LayoutEventsTest.js
index 42def2c419b..bbbad14faf3 100644
--- a/IntegrationTests/LayoutEventsTest.js
+++ b/IntegrationTests/LayoutEventsTest.js
@@ -38,6 +38,7 @@ type State = {
   viewLayout?: Layout,
   viewStyle?: ViewStyleProp,
   containerStyle?: ViewStyleProp,
+  ...
 };
 
 class LayoutEventsTest extends React.Component<Props, State> {
diff --git a/IntegrationTests/PromiseTest.js b/IntegrationTests/PromiseTest.js
index b35c971fc34..809f6eb873d 100644
--- a/IntegrationTests/PromiseTest.js
+++ b/IntegrationTests/PromiseTest.js
@@ -15,7 +15,7 @@ const ReactNative = require('react-native');
 const {View} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
-class PromiseTest extends React.Component<{}> {
+class PromiseTest extends React.Component<{...}> {
   shouldResolve: boolean = false;
   shouldReject: boolean = false;
   shouldSucceedAsync: boolean = false;
diff --git a/IntegrationTests/SimpleSnapshotTest.js b/IntegrationTests/SimpleSnapshotTest.js
index 90cb3f1e17c..d2501222da0 100644
--- a/IntegrationTests/SimpleSnapshotTest.js
+++ b/IntegrationTests/SimpleSnapshotTest.js
@@ -18,7 +18,7 @@ const requestAnimationFrame = require('fbjs/lib/requestAnimationFrame');
 const {StyleSheet, View} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
-class SimpleSnapshotTest extends React.Component<{}> {
+class SimpleSnapshotTest extends React.Component<{...}> {
   componentDidMount() {
     if (!TestModule.verifySnapshot) {
       throw new Error('TestModule.verifySnapshot not defined.');
diff --git a/IntegrationTests/SizeFlexibilityUpdateTest.js b/IntegrationTests/SizeFlexibilityUpdateTest.js
index 419083c57a3..df3b5619087 100644
--- a/IntegrationTests/SizeFlexibilityUpdateTest.js
+++ b/IntegrationTests/SizeFlexibilityUpdateTest.js
@@ -54,7 +54,8 @@ class SizeFlexibilityUpdateTest extends React.Component<Props> {
   rootViewDidChangeIntrinsicSize: (intrinsicSize: {
     height: number,
     width: number,
-  }) => void = (intrinsicSize: {width: number, height: number}) => {
+    ...
+  }) => void = (intrinsicSize: {width: number, height: number, ...}) => {
     if (finalState) {
       // If a test reaches its final state, it is not expected to do anything more
       TestModule.markTestPassed(false);
diff --git a/IntegrationTests/SyncMethodTest.js b/IntegrationTests/SyncMethodTest.js
index 8dbb5b94ad7..077884256d2 100644
--- a/IntegrationTests/SyncMethodTest.js
+++ b/IntegrationTests/SyncMethodTest.js
@@ -16,7 +16,7 @@ const {View} = ReactNative;
 
 const {TestModule, RNTesterTestModule} = ReactNative.NativeModules;
 
-class SyncMethodTest extends React.Component<{}> {
+class SyncMethodTest extends React.Component<{...}> {
   componentDidMount() {
     if (
       RNTesterTestModule.echoString('test string value') !== 'test string value'
diff --git a/IntegrationTests/WebSocketTest.js b/IntegrationTests/WebSocketTest.js
index fcc2d74cb8d..3435feabb11 100644
--- a/IntegrationTests/WebSocketTest.js
+++ b/IntegrationTests/WebSocketTest.js
@@ -28,9 +28,10 @@ type State = {
   lastMessage: ?string | ?ArrayBuffer,
   testMessage: string,
   testExpectedResponse: string,
+  ...
 };
 
-class WebSocketTest extends React.Component<{}, State> {
+class WebSocketTest extends React.Component<{...}, State> {
   state: State = {
     url: DEFAULT_WS_URL,
     fetchStatus: null,
diff --git a/Libraries/Alert/Alert.js b/Libraries/Alert/Alert.js
index 55bdce3fd40..88873c5aa60 100644
--- a/Libraries/Alert/Alert.js
+++ b/Libraries/Alert/Alert.js
@@ -26,11 +26,13 @@ export type Buttons = Array<{
   text?: string,
   onPress?: ?Function,
   style?: AlertButtonStyle,
+  ...
 }>;
 
 type Options = {
   cancelable?: ?boolean,
   onDismiss?: ?() => void,
+  ...
 };
 
 /**
diff --git a/Libraries/Animated/src/AnimatedEvent.js b/Libraries/Animated/src/AnimatedEvent.js
index 01c850daf37..e3c0b814cf8 100644
--- a/Libraries/Animated/src/AnimatedEvent.js
+++ b/Libraries/Animated/src/AnimatedEvent.js
@@ -18,10 +18,11 @@ const invariant = require('invariant');
 
 const {shouldUseNativeDriver} = require('./NativeAnimatedHelper');
 
-export type Mapping = {[key: string]: Mapping} | AnimatedValue;
+export type Mapping = {[key: string]: Mapping, ...} | AnimatedValue;
 export type EventConfig = {
   listener?: ?Function,
   useNativeDriver: boolean,
+  ...
 };
 
 function attachNativeEvent(
@@ -87,9 +88,7 @@ class AnimatedEvent {
   _argMapping: Array<?Mapping>;
   _listeners: Array<Function> = [];
   _callListeners: Function;
-  _attachedEvent: ?{
-    detach: () => void,
-  };
+  _attachedEvent: ?{detach: () => void, ...};
   __isNative: boolean;
 
   constructor(argMapping: Array<?Mapping>, config: EventConfig) {
diff --git a/Libraries/Animated/src/AnimatedImplementation.js b/Libraries/Animated/src/AnimatedImplementation.js
index 9339044ce76..a1ce333acd2 100644
--- a/Libraries/Animated/src/AnimatedImplementation.js
+++ b/Libraries/Animated/src/AnimatedImplementation.js
@@ -46,6 +46,7 @@ export type CompositeAnimation = {
   reset: () => void,
   _startNativeLoop: (iterations?: number) => void,
   _isUsingNativeDriver: () => boolean,
+  ...
 };
 
 const add = function(
@@ -341,7 +342,9 @@ const sequence = function(
 };
 
 type ParallelConfig = {
-  stopTogether?: boolean, // If one is stopped, stop all.  default: true
+  // If one is stopped, stop all.  default: true
+  stopTogether?: boolean,
+  ...
 };
 const parallel = function(
   animations: Array<CompositeAnimation>,
@@ -435,6 +438,7 @@ const stagger = function(
 type LoopAnimationConfig = {
   iterations: number,
   resetBeforeIteration?: boolean,
+  ...
 };
 
 const loop = function(
diff --git a/Libraries/Animated/src/AnimatedMock.js b/Libraries/Animated/src/AnimatedMock.js
index b6eecf3031a..eecfbb884ec 100644
--- a/Libraries/Animated/src/AnimatedMock.js
+++ b/Libraries/Animated/src/AnimatedMock.js
@@ -37,6 +37,7 @@ export type CompositeAnimation = {
   reset: () => void,
   _startNativeLoop: (iterations?: number) => void,
   _isUsingNativeDriver: () => boolean,
+  ...
 };
 
 const emptyAnimation = {
@@ -90,9 +91,7 @@ const sequence = function(
   return emptyAnimation;
 };
 
-type ParallelConfig = {
-  stopTogether?: boolean,
-};
+type ParallelConfig = {stopTogether?: boolean, ...};
 const parallel = function(
   animations: Array<CompositeAnimation>,
   config?: ?ParallelConfig,
@@ -111,7 +110,11 @@ const stagger = function(
   return emptyAnimation;
 };
 
-type LoopAnimationConfig = {iterations: number, resetBeforeIteration?: boolean};
+type LoopAnimationConfig = {
+  iterations: number,
+  resetBeforeIteration?: boolean,
+  ...
+};
 
 const loop = function(
   animation: CompositeAnimation,
diff --git a/Libraries/Animated/src/NativeAnimatedHelper.js b/Libraries/Animated/src/NativeAnimatedHelper.js
index 41d0e52e60d..25fde53b628 100644
--- a/Libraries/Animated/src/NativeAnimatedHelper.js
+++ b/Libraries/Animated/src/NativeAnimatedHelper.js
@@ -217,8 +217,18 @@ function addWhitelistedInterpolationParam(param: string): void {
 
 function validateTransform(
   configs: Array<
-    | {type: 'animated', property: string, nodeTag: ?number}
-    | {type: 'static', property: string, value: number | string},
+    | {
+        type: 'animated',
+        property: string,
+        nodeTag: ?number,
+        ...
+      }
+    | {
+        type: 'static',
+        property: string,
+        value: number | string,
+        ...
+      },
   >,
 ): void {
   configs.forEach(config => {
@@ -232,7 +242,7 @@ function validateTransform(
   });
 }
 
-function validateStyles(styles: {[key: string]: ?number}): void {
+function validateStyles(styles: {[key: string]: ?number, ...}): void {
   for (const key in styles) {
     if (!STYLES_WHITELIST.hasOwnProperty(key)) {
       throw new Error(
diff --git a/Libraries/Animated/src/NativeAnimatedModule.js b/Libraries/Animated/src/NativeAnimatedModule.js
index aa9e1257d2c..fc76ec1953a 100644
--- a/Libraries/Animated/src/NativeAnimatedModule.js
+++ b/Libraries/Animated/src/NativeAnimatedModule.js
@@ -13,7 +13,7 @@
 import type {TurboModule} from '../../TurboModule/RCTExport';
 import * as TurboModuleRegistry from '../../TurboModule/TurboModuleRegistry';
 
-type EndResult = {finished: boolean};
+type EndResult = {finished: boolean, ...};
 type EndCallback = (result: EndResult) => void;
 
 export type EventMapping = {|
diff --git a/Libraries/Animated/src/SpringConfig.js b/Libraries/Animated/src/SpringConfig.js
index e226a3173a1..5dd212ca110 100644
--- a/Libraries/Animated/src/SpringConfig.js
+++ b/Libraries/Animated/src/SpringConfig.js
@@ -13,6 +13,7 @@
 type SpringConfigType = {
   stiffness: number,
   damping: number,
+  ...
 };
 
 function stiffnessFromOrigamiValue(oValue) {
diff --git a/Libraries/Animated/src/animations/Animation.js b/Libraries/Animated/src/animations/Animation.js
index 54de2d005ef..4d2ac807523 100644
--- a/Libraries/Animated/src/animations/Animation.js
+++ b/Libraries/Animated/src/animations/Animation.js
@@ -14,7 +14,7 @@ const NativeAnimatedHelper = require('../NativeAnimatedHelper');
 
 import type AnimatedValue from '../nodes/AnimatedValue';
 
-export type EndResult = {finished: boolean};
+export type EndResult = {finished: boolean, ...};
 export type EndCallback = (result: EndResult) => void;
 
 export type AnimationConfig = {
@@ -22,6 +22,7 @@ export type AnimationConfig = {
   useNativeDriver: boolean,
   onComplete?: ?EndCallback,
   iterations?: number,
+  ...
 };
 
 // Important note: start() and stop() will only be called at most once.
diff --git a/Libraries/Animated/src/animations/DecayAnimation.js b/Libraries/Animated/src/animations/DecayAnimation.js
index 8c7e74c1ab7..6f4039cf40e 100644
--- a/Libraries/Animated/src/animations/DecayAnimation.js
+++ b/Libraries/Animated/src/animations/DecayAnimation.js
@@ -18,13 +18,21 @@ import type AnimatedValue from '../nodes/AnimatedValue';
 import type {AnimationConfig, EndCallback} from './Animation';
 
 export type DecayAnimationConfig = AnimationConfig & {
-  velocity: number | {x: number, y: number},
+  velocity:
+    | number
+    | {
+        x: number,
+        y: number,
+        ...
+      },
   deceleration?: number,
+  ...
 };
 
 export type DecayAnimationConfigSingle = AnimationConfig & {
   velocity: number,
   deceleration?: number,
+  ...
 };
 
 class DecayAnimation extends Animation {
diff --git a/Libraries/Animated/src/animations/SpringAnimation.js b/Libraries/Animated/src/animations/SpringAnimation.js
index d099f8a0c75..61ff7cfa7cc 100644
--- a/Libraries/Animated/src/animations/SpringAnimation.js
+++ b/Libraries/Animated/src/animations/SpringAnimation.js
@@ -22,11 +22,25 @@ const {shouldUseNativeDriver} = require('../NativeAnimatedHelper');
 import type {AnimationConfig, EndCallback} from './Animation';
 
 export type SpringAnimationConfig = AnimationConfig & {
-  toValue: number | AnimatedValue | {x: number, y: number} | AnimatedValueXY,
+  toValue:
+    | number
+    | AnimatedValue
+    | {
+        x: number,
+        y: number,
+        ...
+      }
+    | AnimatedValueXY,
   overshootClamping?: boolean,
   restDisplacementThreshold?: number,
   restSpeedThreshold?: number,
-  velocity?: number | {x: number, y: number},
+  velocity?:
+    | number
+    | {
+        x: number,
+        y: number,
+        ...
+      },
   bounciness?: number,
   speed?: number,
   tension?: number,
@@ -35,6 +49,7 @@ export type SpringAnimationConfig = AnimationConfig & {
   damping?: number,
   mass?: number,
   delay?: number,
+  ...
 };
 
 export type SpringAnimationConfigSingle = AnimationConfig & {
@@ -51,6 +66,7 @@ export type SpringAnimationConfigSingle = AnimationConfig & {
   damping?: number,
   mass?: number,
   delay?: number,
+  ...
 };
 
 class SpringAnimation extends Animation {
diff --git a/Libraries/Animated/src/animations/TimingAnimation.js b/Libraries/Animated/src/animations/TimingAnimation.js
index 323b512208e..f88f7207e60 100644
--- a/Libraries/Animated/src/animations/TimingAnimation.js
+++ b/Libraries/Animated/src/animations/TimingAnimation.js
@@ -19,10 +19,19 @@ const {shouldUseNativeDriver} = require('../NativeAnimatedHelper');
 import type {AnimationConfig, EndCallback} from './Animation';
 
 export type TimingAnimationConfig = AnimationConfig & {
-  toValue: number | AnimatedValue | {x: number, y: number} | AnimatedValueXY,
+  toValue:
+    | number
+    | AnimatedValue
+    | {
+        x: number,
+        y: number,
+        ...
+      }
+    | AnimatedValueXY,
   easing?: (value: number) => number,
   duration?: number,
   delay?: number,
+  ...
 };
 
 export type TimingAnimationConfigSingle = AnimationConfig & {
@@ -30,6 +39,7 @@ export type TimingAnimationConfigSingle = AnimationConfig & {
   easing?: (value: number) => number,
   duration?: number,
   delay?: number,
+  ...
 };
 
 let _easeInOut;
diff --git a/Libraries/Animated/src/createAnimatedComponent.js b/Libraries/Animated/src/createAnimatedComponent.js
index d803781e158..0672962354a 100644
--- a/Libraries/Animated/src/createAnimatedComponent.js
+++ b/Libraries/Animated/src/createAnimatedComponent.js
@@ -18,11 +18,11 @@ const invariant = require('invariant');
 const setAndForwardRef = require('../../Utilities/setAndForwardRef');
 
 export type AnimatedComponentType<
-  Props: {+[string]: mixed},
+  Props: {+[string]: mixed, ...},
   Instance,
 > = React.AbstractComponent<$ObjMap<Props, () => any>, Instance>;
 
-function createAnimatedComponent<Props: {+[string]: mixed}, Instance>(
+function createAnimatedComponent<Props: {+[string]: mixed, ...}, Instance>(
   Component: React.AbstractComponent<Props, Instance>,
 ): AnimatedComponentType<Props, Instance> {
   invariant(
diff --git a/Libraries/Animated/src/nodes/AnimatedInterpolation.js b/Libraries/Animated/src/nodes/AnimatedInterpolation.js
index 4fdb3447838..de029222c4e 100644
--- a/Libraries/Animated/src/nodes/AnimatedInterpolation.js
+++ b/Libraries/Animated/src/nodes/AnimatedInterpolation.js
@@ -32,6 +32,7 @@ export type InterpolationConfigType = {
   extrapolate?: ExtrapolateType,
   extrapolateLeft?: ExtrapolateType,
   extrapolateRight?: ExtrapolateType,
+  ...
 };
 
 const linear = t => t;
diff --git a/Libraries/Animated/src/nodes/AnimatedNode.js b/Libraries/Animated/src/nodes/AnimatedNode.js
index ab0feac1846..4b6a079bf73 100644
--- a/Libraries/Animated/src/nodes/AnimatedNode.js
+++ b/Libraries/Animated/src/nodes/AnimatedNode.js
@@ -15,14 +15,14 @@ const NativeAnimatedHelper = require('../NativeAnimatedHelper');
 const NativeAnimatedAPI = NativeAnimatedHelper.API;
 const invariant = require('invariant');
 
-type ValueListenerCallback = (state: {value: number}) => mixed;
+type ValueListenerCallback = (state: {value: number, ...}) => mixed;
 
 let _uniqueId = 1;
 
 // Note(vjeux): this would be better as an interface but flow doesn't
 // support them yet
 class AnimatedNode {
-  _listeners: {[key: string]: ValueListenerCallback};
+  _listeners: {[key: string]: ValueListenerCallback, ...};
   __nativeAnimatedValueListener: ?any;
   __attach(): void {}
   __detach(): void {
diff --git a/Libraries/Animated/src/nodes/AnimatedValueXY.js b/Libraries/Animated/src/nodes/AnimatedValueXY.js
index 7494d0bda8c..2e845b26219 100644
--- a/Libraries/Animated/src/nodes/AnimatedValueXY.js
+++ b/Libraries/Animated/src/nodes/AnimatedValueXY.js
@@ -15,7 +15,11 @@ const AnimatedWithChildren = require('./AnimatedWithChildren');
 
 const invariant = require('invariant');
 
-type ValueXYListenerCallback = (value: {x: number, y: number}) => mixed;
+type ValueXYListenerCallback = (value: {
+  x: number,
+  y: number,
+  ...
+}) => mixed;
 
 let _uniqueId = 1;
 
@@ -28,10 +32,21 @@ let _uniqueId = 1;
 class AnimatedValueXY extends AnimatedWithChildren {
   x: AnimatedValue;
   y: AnimatedValue;
-  _listeners: {[key: string]: {x: string, y: string}};
+  _listeners: {
+    [key: string]: {
+      x: string,
+      y: string,
+      ...
+    },
+    ...,
+  };
 
   constructor(
-    valueIn?: ?{+x: number | AnimatedValue, +y: number | AnimatedValue},
+    valueIn?: ?{
+      +x: number | AnimatedValue,
+      +y: number | AnimatedValue,
+      ...
+    },
   ) {
     super();
     const value: any = valueIn || {x: 0, y: 0}; // @flowfixme: shouldn't need `: any`
@@ -56,7 +71,7 @@ class AnimatedValueXY extends AnimatedWithChildren {
    *
    * See http://facebook.github.io/react-native/docs/animatedvaluexy.html#setvalue
    */
-  setValue(value: {x: number, y: number}) {
+  setValue(value: {x: number, y: number, ...}) {
     this.x.setValue(value.x);
     this.y.setValue(value.y);
   }
@@ -68,7 +83,7 @@ class AnimatedValueXY extends AnimatedWithChildren {
    *
    * See http://facebook.github.io/react-native/docs/animatedvaluexy.html#setoffset
    */
-  setOffset(offset: {x: number, y: number}) {
+  setOffset(offset: {x: number, y: number, ...}) {
     this.x.setOffset(offset.x);
     this.y.setOffset(offset.y);
   }
@@ -95,7 +110,11 @@ class AnimatedValueXY extends AnimatedWithChildren {
     this.y.extractOffset();
   }
 
-  __getValue(): {x: number, y: number} {
+  __getValue(): {
+    x: number,
+    y: number,
+    ...
+  } {
     return {
       x: this.x.__getValue(),
       y: this.y.__getValue(),
@@ -107,7 +126,13 @@ class AnimatedValueXY extends AnimatedWithChildren {
    *
    * See http://facebook.github.io/react-native/docs/animatedvaluexy.html#resetanimation
    */
-  resetAnimation(callback?: (value: {x: number, y: number}) => void): void {
+  resetAnimation(
+    callback?: (value: {
+      x: number,
+      y: number,
+      ...
+    }) => void,
+  ): void {
     this.x.resetAnimation();
     this.y.resetAnimation();
     callback && callback(this.__getValue());
@@ -120,7 +145,13 @@ class AnimatedValueXY extends AnimatedWithChildren {
    *
    * See http://facebook.github.io/react-native/docs/animatedvaluexy.html#stopanimation
    */
-  stopAnimation(callback?: (value: {x: number, y: number}) => void): void {
+  stopAnimation(
+    callback?: (value: {
+      x: number,
+      y: number,
+      ...
+    }) => void,
+  ): void {
     this.x.stopAnimation();
     this.y.stopAnimation();
     callback && callback(this.__getValue());
@@ -175,7 +206,7 @@ class AnimatedValueXY extends AnimatedWithChildren {
    *
    * See http://facebook.github.io/react-native/docs/animatedvaluexy.html#getlayout
    */
-  getLayout(): {[key: string]: AnimatedValue} {
+  getLayout(): {[key: string]: AnimatedValue, ...} {
     return {
       left: this.x,
       top: this.y,
@@ -187,7 +218,7 @@ class AnimatedValueXY extends AnimatedWithChildren {
    *
    * See http://facebook.github.io/react-native/docs/animatedvaluexy.html#gettranslatetransform
    */
-  getTranslateTransform(): Array<{[key: string]: AnimatedValue}> {
+  getTranslateTransform(): Array<{[key: string]: AnimatedValue, ...}> {
     return [{translateX: this.x}, {translateY: this.y}];
   }
 }
diff --git a/Libraries/BatchedBridge/MessageQueue.js b/Libraries/BatchedBridge/MessageQueue.js
index 37d35b659b7..8c35ee9f8ea 100644
--- a/Libraries/BatchedBridge/MessageQueue.js
+++ b/Libraries/BatchedBridge/MessageQueue.js
@@ -23,6 +23,7 @@ export type SpyData = {
   module: ?string,
   method: string | number,
   args: any[],
+  ...
 };
 
 const TO_JS = 0;
@@ -39,7 +40,7 @@ const TRACE_TAG_REACT_APPS = 1 << 17;
 const DEBUG_INFO_LIMIT = 32;
 
 class MessageQueue {
-  _lazyCallableModules: {[key: string]: (void) => Object};
+  _lazyCallableModules: {[key: string]: (void) => Object, ...};
   _queue: [number[], number[], any[], number];
   _successCallbacks: Map<number, ?Function>;
   _failureCallbacks: Map<number, ?Function>;
@@ -48,9 +49,9 @@ class MessageQueue {
   _eventLoopStartTime: number;
   _immediatesCallback: ?() => void;
 
-  _debugInfo: {[number]: [number, number]};
-  _remoteModuleTable: {[number]: string};
-  _remoteMethodTable: {[number]: $ReadOnlyArray<string>};
+  _debugInfo: {[number]: [number, number], ...};
+  _remoteModuleTable: {[number]: string, ...};
+  _remoteMethodTable: {[number]: $ReadOnlyArray<string>, ...};
 
   __spy: ?(data: SpyData) => void;
 
diff --git a/Libraries/BatchedBridge/NativeModules.js b/Libraries/BatchedBridge/NativeModules.js
index a0c5b074b59..541012582c0 100644
--- a/Libraries/BatchedBridge/NativeModules.js
+++ b/Libraries/BatchedBridge/NativeModules.js
@@ -29,7 +29,11 @@ export type MethodType = 'async' | 'promise' | 'sync';
 function genModule(
   config: ?ModuleConfig,
   moduleID: number,
-): ?{name: string, module?: Object} {
+): ?{
+  name: string,
+  module?: Object,
+  ...
+} {
   if (!config) {
     return null;
   }
@@ -151,13 +155,13 @@ function arrayContains<T>(array: $ReadOnlyArray<T>, value: T): boolean {
 }
 
 function updateErrorWithErrorData(
-  errorData: {message: string},
+  errorData: {message: string, ...},
   error: ExtendedError,
 ): ExtendedError {
   return Object.assign(error, errorData || {});
 }
 
-let NativeModules: {[moduleName: string]: Object} = {};
+let NativeModules: {[moduleName: string]: Object, ...} = {};
 if (global.nativeModuleProxy) {
   NativeModules = global.nativeModuleProxy;
 } else if (!global.nativeExtensions) {
diff --git a/Libraries/Blob/BlobRegistry.js b/Libraries/Blob/BlobRegistry.js
index f3cd13ebc48..ce1eaed3404 100644
--- a/Libraries/Blob/BlobRegistry.js
+++ b/Libraries/Blob/BlobRegistry.js
@@ -8,7 +8,7 @@
  * @format
  */
 
-const registry: {[key: string]: number} = {};
+const registry: {[key: string]: number, ...} = {};
 
 const register = (id: string) => {
   if (registry[id]) {
diff --git a/Libraries/Blob/BlobTypes.js b/Libraries/Blob/BlobTypes.js
index cbd49b90160..cae2ee1f42c 100644
--- a/Libraries/Blob/BlobTypes.js
+++ b/Libraries/Blob/BlobTypes.js
@@ -10,7 +10,7 @@
 
 'use strict';
 
-export opaque type BlobCollector = {};
+export opaque type BlobCollector = {...};
 
 export type BlobData = {
   blobId: string,
@@ -20,9 +20,11 @@ export type BlobData = {
   type?: string,
   lastModified?: number,
   __collector?: ?BlobCollector,
+  ...
 };
 
 export type BlobOptions = {
   type: string,
   lastModified: number,
+  ...
 };
diff --git a/Libraries/BugReporting/BugReporting.js b/Libraries/BugReporting/BugReporting.js
index ba36324d619..04595e83726 100644
--- a/Libraries/BugReporting/BugReporting.js
+++ b/Libraries/BugReporting/BugReporting.js
@@ -16,9 +16,13 @@ import type EmitterSubscription from '../vendor/emitter/EmitterSubscription';
 import NativeBugReporting from './NativeBugReporting';
 import NativeRedBox from '../NativeModules/specs/NativeRedBox';
 
-type ExtraData = {[key: string]: string};
+type ExtraData = {[key: string]: string, ...};
 type SourceCallback = () => string;
-type DebugData = {extras: ExtraData, files: ExtraData};
+type DebugData = {
+  extras: ExtraData,
+  files: ExtraData,
+  ...
+};
 
 function defaultExtras() {
   BugReporting.addFileSource('react_hierarchy.txt', () =>
@@ -68,7 +72,7 @@ class BugReporting {
   static addSource(
     key: string,
     callback: SourceCallback,
-  ): {remove: () => void} {
+  ): {remove: () => void, ...} {
     return this._addSource(key, callback, BugReporting._extraSources);
   }
 
@@ -83,7 +87,7 @@ class BugReporting {
   static addFileSource(
     key: string,
     callback: SourceCallback,
-  ): {remove: () => void} {
+  ): {remove: () => void, ...} {
     return this._addSource(key, callback, BugReporting._fileSources);
   }
 
@@ -91,7 +95,7 @@ class BugReporting {
     key: string,
     callback: SourceCallback,
     source: Map<string, SourceCallback>,
-  ): {remove: () => void} {
+  ): {remove: () => void, ...} {
     BugReporting._maybeInit();
     if (source.has(key)) {
       console.warn(
diff --git a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
index e2db8ab1eab..1840dfce692 100644
--- a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
+++ b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
@@ -22,6 +22,7 @@ type ChangeEventName = $Keys<{
   change: string,
   reduceMotionChanged: string,
   screenReaderChanged: string,
+  ...
 }>;
 
 const _subscriptions = new Map();
diff --git a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js
index c82b3e31b37..4627b70d2ae 100644
--- a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js
+++ b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js
@@ -34,6 +34,7 @@ type ChangeEventName = $Keys<{
   reduceMotionChanged: string,
   reduceTransparencyChanged: string,
   screenReaderChanged: string,
+  ...
 }>;
 
 const _subscriptions = new Map();
diff --git a/Libraries/Components/Keyboard/KeyboardAvoidingView.js b/Libraries/Components/Keyboard/KeyboardAvoidingView.js
index e49e9aa7ea5..7c794ea5e8d 100644
--- a/Libraries/Components/Keyboard/KeyboardAvoidingView.js
+++ b/Libraries/Components/Keyboard/KeyboardAvoidingView.js
@@ -68,7 +68,7 @@ class KeyboardAvoidingView extends React.Component<Props, State> {
 
   _frame: ?ViewLayout = null;
   _subscriptions: Array<EmitterSubscription> = [];
-  viewRef: {current: React.ElementRef<any> | null};
+  viewRef: {current: React.ElementRef<any> | null, ...};
   _initialFrameHeight: number = 0;
 
   constructor(props: Props) {
diff --git a/Libraries/Components/RefreshControl/RefreshControl.js b/Libraries/Components/RefreshControl/RefreshControl.js
index 547b8cb7e01..43ebf012308 100644
--- a/Libraries/Components/RefreshControl/RefreshControl.js
+++ b/Libraries/Components/RefreshControl/RefreshControl.js
@@ -135,7 +135,7 @@ export type RefreshControlProps = $ReadOnly<{|
 class RefreshControl extends React.Component<RefreshControlProps> {
   static SIZE: any = RefreshLayoutConsts.SIZE;
 
-  _setNativePropsOnRef: ?({refreshing: boolean}) => void;
+  _setNativePropsOnRef: ?({refreshing: boolean, ...}) => void;
   _lastNativeRefreshing = false;
 
   componentDidMount() {
diff --git a/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js b/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js
index 46e91d97c59..40d41abbdc6 100644
--- a/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js
+++ b/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js
@@ -20,7 +20,7 @@ const RCTRefreshControl: HostComponent<mixed> = requireNativeComponent<mixed>(
   'RCTRefreshControl',
 );
 
-class RefreshControlMock extends React.Component<{}> {
+class RefreshControlMock extends React.Component<{...}> {
   static latestRef: ?RefreshControlMock;
   componentDidMount() {
     RefreshControlMock.latestRef = this;
diff --git a/Libraries/Components/ScrollResponder.js b/Libraries/Components/ScrollResponder.js
index 4b282be6d51..17422571c07 100644
--- a/Libraries/Components/ScrollResponder.js
+++ b/Libraries/Components/ScrollResponder.js
@@ -449,7 +449,14 @@ const ScrollResponderMixin = {
    * This is deprecated due to ambiguity (y before x), and SHOULD NOT BE USED.
    */
   scrollResponderScrollTo: function(
-    x?: number | {x?: number, y?: number, animated?: boolean},
+    x?:
+      | number
+      | {
+          x?: number,
+          y?: number,
+          animated?: boolean,
+          ...
+        },
     y?: number,
     animated?: boolean,
   ) {
@@ -481,7 +488,7 @@ const ScrollResponderMixin = {
    *
    * `scrollResponderScrollToEnd({animated: true})`
    */
-  scrollResponderScrollToEnd: function(options?: {animated?: boolean}) {
+  scrollResponderScrollToEnd: function(options?: {animated?: boolean, ...}) {
     // Default to true
     const animated = (options && options.animated) !== false;
 
diff --git a/Libraries/Components/ScrollView/ScrollView.js b/Libraries/Components/ScrollView/ScrollView.js
index 7e5809c800e..a3e8b0ab94c 100644
--- a/Libraries/Components/ScrollView/ScrollView.js
+++ b/Libraries/Components/ScrollView/ScrollView.js
@@ -73,12 +73,11 @@ export type ScrollResponderType = {
   getInnerViewNode: $PropertyType<ScrollView, 'getInnerViewNode'>,
   getInnerViewRef: $PropertyType<ScrollView, 'getInnerViewRef'>,
   getNativeScrollRef: $PropertyType<ScrollView, 'getNativeScrollRef'>,
-
   setNativeProps: $PropertyType<ScrollView, 'setNativeProps'>,
   scrollTo: $PropertyType<ScrollView, 'scrollTo'>,
   flashScrollIndicators: $PropertyType<ScrollView, 'flashScrollIndicators'>,
-
   ...typeof ScrollResponder.Mixin,
+  ...
 };
 
 type IOSProps = $ReadOnly<{|
@@ -372,9 +371,7 @@ type VRProps = $ReadOnly<{|
 
 type StickyHeaderComponentType = React.AbstractComponent<
   ScrollViewStickyHeaderProps,
-  $ReadOnly<{
-    setNextHeaderY: number => void,
-  }>,
+  $ReadOnly<{setNextHeaderY: number => void, ...}>,
 >;
 
 export type Props = $ReadOnly<{|
@@ -702,7 +699,7 @@ class ScrollView extends React.Component<Props, State> {
   _scrollAnimatedValue: AnimatedImplementation.Value = new AnimatedImplementation.Value(
     0,
   );
-  _scrollAnimatedValueAttachment: ?{detach: () => void} = null;
+  _scrollAnimatedValueAttachment: ?{detach: () => void, ...} = null;
   _stickyHeaderRefs: Map<
     string,
     React.ElementRef<StickyHeaderComponentType>,
@@ -753,7 +750,7 @@ class ScrollView extends React.Component<Props, State> {
     }
   }
 
-  setNativeProps(props: {[key: string]: mixed}) {
+  setNativeProps(props: {[key: string]: mixed, ...}) {
     this._scrollViewRef && this._scrollViewRef.setNativeProps(props);
   }
 
@@ -796,7 +793,14 @@ class ScrollView extends React.Component<Props, State> {
    * This is deprecated due to ambiguity (y before x), and SHOULD NOT BE USED.
    */
   scrollTo(
-    options?: {x?: number, y?: number, animated?: boolean} | number,
+    options?:
+      | {
+          x?: number,
+          y?: number,
+          animated?: boolean,
+          ...
+        }
+      | number,
     deprecatedX?: number,
     deprecatedAnimated?: boolean,
   ) {
@@ -829,7 +833,7 @@ class ScrollView extends React.Component<Props, State> {
    * `scrollToEnd({animated: false})` for immediate scrolling.
    * If no options are passed, `animated` defaults to true.
    */
-  scrollToEnd(options?: ?{animated?: boolean}) {
+  scrollToEnd(options?: ?{animated?: boolean, ...}) {
     // Default to true
     const animated = (options && options.animated) !== false;
     this._scrollResponder.scrollResponderScrollToEnd({
diff --git a/Libraries/Components/ScrollView/ScrollViewNativeComponentType.js b/Libraries/Components/ScrollView/ScrollViewNativeComponentType.js
index f53358d5e5d..4ea33db416b 100644
--- a/Libraries/Components/ScrollView/ScrollViewNativeComponentType.js
+++ b/Libraries/Components/ScrollView/ScrollViewNativeComponentType.js
@@ -23,7 +23,6 @@ import type {PointProp} from '../../StyleSheet/PointPropType';
 
 export type ScrollViewNativeProps = $ReadOnly<{
   ...ViewProps,
-
   alwaysBounceHorizontal?: ?boolean,
   alwaysBounceVertical?: ?boolean,
   automaticallyAdjustContentInsets?: ?boolean,
@@ -78,12 +77,11 @@ export type ScrollViewNativeProps = $ReadOnly<{
   snapToOffsets?: ?$ReadOnlyArray<number>,
   snapToStart?: ?boolean,
   zoomScale?: ?number,
-
   DEPRECATED_sendUpdatedChildFrames?: ?boolean,
-
   // Overrides
-  style?: {...ViewStyleProp} | DangerouslyImpreciseStyle,
+  style?: {...ViewStyleProp, ...} | DangerouslyImpreciseStyle,
   onResponderGrant?: ?(e: any) => void | boolean,
+  ...
 }>;
 
 export type ScrollViewNativeComponentType = HostComponent<ScrollViewNativeProps>;
diff --git a/Libraries/Components/ScrollView/ScrollViewStickyHeader.js b/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
index 98a38962a75..0bc51bbfaec 100644
--- a/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
+++ b/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
@@ -29,6 +29,7 @@ export type Props = {
   inverted: ?boolean,
   // The height of the parent ScrollView. Currently only set when inverted.
   scrollViewHeight: ?number,
+  ...
 };
 
 type State = {
@@ -36,6 +37,7 @@ type State = {
   layoutY: number,
   layoutHeight: number,
   nextHeaderLayoutY: ?number,
+  ...
 };
 
 class ScrollViewStickyHeader extends React.Component<Props, State> {
diff --git a/Libraries/Components/StatusBar/StatusBar.js b/Libraries/Components/StatusBar/StatusBar.js
index 2dacf2f21e2..16137272440 100644
--- a/Libraries/Components/StatusBar/StatusBar.js
+++ b/Libraries/Components/StatusBar/StatusBar.js
@@ -34,6 +34,7 @@ export type StatusBarStyle = $Keys<{
    * Light background, dark texts and icons
    */
   'dark-content': string,
+  ...
 }>;
 
 /**
@@ -52,6 +53,7 @@ export type StatusBarAnimation = $Keys<{
    * Slide animation
    */
   slide: string,
+  ...
 }>;
 
 type AndroidProps = $ReadOnly<{|
diff --git a/Libraries/Components/TextInput/TextInput.js b/Libraries/Components/TextInput/TextInput.js
index 65aed75fe39..db4b7643307 100644
--- a/Libraries/Components/TextInput/TextInput.js
+++ b/Libraries/Components/TextInput/TextInput.js
@@ -32,7 +32,7 @@ import type {SyntheticEvent, ScrollEvent} from '../../Types/CoreEventTypes';
 import type {PressEvent} from '../../Types/CoreEventTypes';
 import type {HostComponent} from '../../Renderer/shims/ReactNativeTypes';
 
-type ReactRefSetter<T> = {current: null | T} | ((ref: null | T) => mixed);
+type ReactRefSetter<T> = {current: null | T, ...} | ((ref: null | T) => mixed);
 
 let AndroidTextInput;
 let RCTMultilineTextInputView;
diff --git a/Libraries/Components/Touchable/PooledClass.js b/Libraries/Components/Touchable/PooledClass.js
index f6fc1ee852f..4aee28a81c5 100644
--- a/Libraries/Components/Touchable/PooledClass.js
+++ b/Libraries/Components/Touchable/PooledClass.js
@@ -97,6 +97,7 @@ const addPoolingTo = function<T>(
     ...args: $ReadOnlyArray<mixed>
   ): /* arguments of the constructor */ T,
   release(instance: mixed): void,
+  ...
 } {
   // Casting as any so that flow ignores the actual implementation and trusts
   // it to match the type we declared
diff --git a/Libraries/Components/Touchable/Touchable.js b/Libraries/Components/Touchable/Touchable.js
index 82a1293a605..3ec606883e3 100644
--- a/Libraries/Components/Touchable/Touchable.js
+++ b/Libraries/Components/Touchable/Touchable.js
@@ -933,6 +933,7 @@ const Touchable = {
   }: {
     color: string | number,
     hitSlop: EdgeInsetsProp,
+    ...
   }): null | React.Node => {
     if (!Touchable.TOUCH_TARGET_DEBUG) {
       return null;
diff --git a/Libraries/Components/Touchable/TouchableBounce.js b/Libraries/Components/Touchable/TouchableBounce.js
index 1c6e53c5c37..641b7215ef1 100644
--- a/Libraries/Components/Touchable/TouchableBounce.js
+++ b/Libraries/Components/Touchable/TouchableBounce.js
@@ -32,6 +32,7 @@ import type {PressEvent} from '../../Types/CoreEventTypes';
 type State = {
   animationID: ?number,
   scale: Animated.Value,
+  ...
 };
 
 const PRESS_RETENTION_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
diff --git a/Libraries/Components/Touchable/TouchableNativeFeedback.android.js b/Libraries/Components/Touchable/TouchableNativeFeedback.android.js
index ae07343a264..e86d89393c1 100644
--- a/Libraries/Components/Touchable/TouchableNativeFeedback.android.js
+++ b/Libraries/Components/Touchable/TouchableNativeFeedback.android.js
@@ -166,6 +166,7 @@ const TouchableNativeFeedbackImpl = createReactClass({
     SelectableBackground: function(): {
       type: 'ThemeAttrAndroid',
       attribute: 'selectableItemBackground',
+      ...
     } {
       return {type: 'ThemeAttrAndroid', attribute: 'selectableItemBackground'};
     },
@@ -177,6 +178,7 @@ const TouchableNativeFeedbackImpl = createReactClass({
     SelectableBackgroundBorderless: function(): {
       type: 'ThemeAttrAndroid',
       attribute: 'selectableItemBackgroundBorderless',
+      ...
     } {
       return {
         type: 'ThemeAttrAndroid',
@@ -200,6 +202,7 @@ const TouchableNativeFeedbackImpl = createReactClass({
       type: 'RippleAndroid',
       color: ?number,
       borderless: boolean,
+      ...
     } {
       return {
         type: 'RippleAndroid',
diff --git a/Libraries/Components/View/ReactNativeStyleAttributes.js b/Libraries/Components/View/ReactNativeStyleAttributes.js
index f80746cd447..ebd3c63df56 100644
--- a/Libraries/Components/View/ReactNativeStyleAttributes.js
+++ b/Libraries/Components/View/ReactNativeStyleAttributes.js
@@ -52,6 +52,7 @@ type StyleAttributesType = {
   tintColor: typeof colorAttributes | true,
   textShadowColor: typeof colorAttributes | true,
   overlayColor: typeof colorAttributes | true,
+  ...
 };
 
 const ReactNativeStyleAttributes: StyleAttributesType = {};
diff --git a/Libraries/Components/View/ViewAccessibility.js b/Libraries/Components/View/ViewAccessibility.js
index 38b078056aa..dd2056ae529 100644
--- a/Libraries/Components/View/ViewAccessibility.js
+++ b/Libraries/Components/View/ViewAccessibility.js
@@ -46,13 +46,12 @@ export type AccessibilityRole =
 export type AccessibilityActionInfo = $ReadOnly<{
   name: string,
   label?: string,
+  ...
 }>;
 
 // The info included in the event sent to onAccessibilityAction
 export type AccessibilityActionEvent = SyntheticEvent<
-  $ReadOnly<{
-    actionName: string,
-  }>,
+  $ReadOnly<{actionName: string, ...}>,
 >;
 
 export type AccessibilityState = {
@@ -61,6 +60,7 @@ export type AccessibilityState = {
   checked?: ?boolean | 'mixed',
   busy?: boolean,
   expanded?: boolean,
+  ...
 };
 
 export type AccessibilityValue = $ReadOnly<{|
diff --git a/Libraries/Components/View/ViewNativeComponent.js b/Libraries/Components/View/ViewNativeComponent.js
index 2ca2f1d3f58..568f38f7fda 100644
--- a/Libraries/Components/View/ViewNativeComponent.js
+++ b/Libraries/Components/View/ViewNativeComponent.js
@@ -35,9 +35,11 @@ let viewConfig:
             captured: string,
           |}>,
         |}>,
+        ...,
       }>,
       directEventTypes?: $ReadOnly<{
         [eventName: string]: $ReadOnly<{|registrationName: string|}>,
+        ...,
       }>,
       uiViewClassName: string,
       validAttributes?: {
@@ -47,6 +49,7 @@ let viewConfig:
               diff?: <T>(arg1: any, arg2: any) => boolean,
               process?: (arg1: any) => any,
             |}>,
+        ...,
       },
     |};
 
diff --git a/Libraries/Core/Devtools/getDevServer.js b/Libraries/Core/Devtools/getDevServer.js
index 845640847c8..5f8dfe1fcc2 100644
--- a/Libraries/Core/Devtools/getDevServer.js
+++ b/Libraries/Core/Devtools/getDevServer.js
@@ -18,6 +18,7 @@ const FALLBACK = 'http://localhost:8081/';
 type DevServerInfo = {
   url: string,
   bundleLoadedFromServer: boolean,
+  ...
 };
 
 /**
diff --git a/Libraries/Core/Devtools/parseErrorStack.js b/Libraries/Core/Devtools/parseErrorStack.js
index 8d54d46b5c3..b24b0d50cc2 100644
--- a/Libraries/Core/Devtools/parseErrorStack.js
+++ b/Libraries/Core/Devtools/parseErrorStack.js
@@ -18,6 +18,7 @@ export type ExtendedError = Error & {
   componentStack?: string,
   forceRedbox?: boolean,
   isComponentError?: boolean,
+  ...
 };
 
 function parseErrorStack(e: ExtendedError): Array<StackFrame> {
diff --git a/Libraries/Core/Devtools/symbolicateStackTrace.js b/Libraries/Core/Devtools/symbolicateStackTrace.js
index fca52b49d36..26d00d72d76 100644
--- a/Libraries/Core/Devtools/symbolicateStackTrace.js
+++ b/Libraries/Core/Devtools/symbolicateStackTrace.js
@@ -24,6 +24,7 @@ export type CodeFrame = $ReadOnly<{|
   location: {
     row: number,
     column: number,
+    ...
   },
   fileName: string,
 |}>;
diff --git a/Libraries/Core/ExceptionsManager.js b/Libraries/Core/ExceptionsManager.js
index a3cfd810101..dc759f0b958 100644
--- a/Libraries/Core/ExceptionsManager.js
+++ b/Libraries/Core/ExceptionsManager.js
@@ -140,6 +140,7 @@ function reportException(e: ExtendedError, isFatal: boolean) {
 declare var console: typeof console & {
   _errorOriginal: typeof console.error,
   reportErrorsAsExceptions: boolean,
+  ...
 };
 
 /**
diff --git a/Libraries/Core/NativeExceptionsManager.js b/Libraries/Core/NativeExceptionsManager.js
index 779fe2db258..20677034c1e 100644
--- a/Libraries/Core/NativeExceptionsManager.js
+++ b/Libraries/Core/NativeExceptionsManager.js
@@ -31,6 +31,7 @@ export type ExceptionData = {
   isFatal: boolean,
   // flowlint-next-line unclear-type:off
   extraData?: Object,
+  ...
 };
 
 export interface Spec extends TurboModule {
diff --git a/Libraries/Core/ReactFiberErrorDialog.js b/Libraries/Core/ReactFiberErrorDialog.js
index 3ea3b623462..6cd503f8ebc 100644
--- a/Libraries/Core/ReactFiberErrorDialog.js
+++ b/Libraries/Core/ReactFiberErrorDialog.js
@@ -12,10 +12,11 @@ export type CapturedError = {
   +componentName: ?string,
   +componentStack: string,
   +error: mixed,
-  +errorBoundary: ?{},
+  +errorBoundary: ?{...},
   +errorBoundaryFound: boolean,
   +errorBoundaryName: string | null,
   +willRetry: boolean,
+  ...
 };
 
 import type {ExtendedError} from './Devtools/parseErrorStack';
diff --git a/Libraries/Core/Timers/JSTimers.js b/Libraries/Core/Timers/JSTimers.js
index d81c80ad762..feaeddf89a0 100644
--- a/Libraries/Core/Timers/JSTimers.js
+++ b/Libraries/Core/Timers/JSTimers.js
@@ -58,7 +58,7 @@ const types: Array<?JSTimerType> = [];
 const timerIDs: Array<?number> = [];
 let immediates: Array<number> = [];
 let requestIdleCallbacks: Array<number> = [];
-const requestIdleCallbackTimeouts: {[number]: number} = {};
+const requestIdleCallbackTimeouts: {[number]: number, ...} = {};
 
 let GUID = 1;
 let errors: ?Array<Error> = null;
diff --git a/Libraries/Core/setUpDeveloperTools.js b/Libraries/Core/setUpDeveloperTools.js
index 4b0e9815ca9..6fe91a5f0b9 100644
--- a/Libraries/Core/setUpDeveloperTools.js
+++ b/Libraries/Core/setUpDeveloperTools.js
@@ -12,9 +12,7 @@
 
 import Platform from '../Utilities/Platform';
 
-declare var console: typeof console & {
-  _isPolyfilled: boolean,
-};
+declare var console: typeof console & {_isPolyfilled: boolean, ...};
 
 /**
  * Sets up developer tools for React Native.
diff --git a/Libraries/Core/setUpSegmentFetcher.js b/Libraries/Core/setUpSegmentFetcher.js
index 42561ed2ba1..c31e2cea182 100644
--- a/Libraries/Core/setUpSegmentFetcher.js
+++ b/Libraries/Core/setUpSegmentFetcher.js
@@ -31,7 +31,13 @@ function __fetchSegment(
   SegmentFetcher.fetchSegment(
     segmentId,
     options,
-    (errorObject: ?{message: string, code: string}) => {
+    (
+      errorObject: ?{
+        message: string,
+        code: string,
+        ...
+      },
+    ) => {
       if (errorObject) {
         const error = new Error(errorObject.message);
         (error: any).code = errorObject.code; // flowlint-line unclear-type: off
@@ -63,7 +69,14 @@ function __getSegment(
   SegmentFetcher.getSegment(
     segmentId,
     options,
-    (errorObject: ?{message: string, code: string}, path: ?string) => {
+    (
+      errorObject: ?{
+        message: string,
+        code: string,
+        ...
+      },
+      path: ?string,
+    ) => {
       if (errorObject) {
         const error = new Error(errorObject.message);
         (error: any).code = errorObject.code; // flowlint-line unclear-type: off
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js
index f4648be20b1..6cf238d42e0 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js
@@ -17,6 +17,7 @@ const DeprecatedEdgeInsetsPropType: React$PropType$Primitive<{
   left?: number,
   right?: number,
   top?: number,
+  ...
 }> = PropTypes.shape({
   top: PropTypes.number,
   left: PropTypes.number,
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js b/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js
index b2d41020de7..e01cc42fb26 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js
@@ -30,7 +30,14 @@ module.exports = {
     }),
     PropTypes.number,
   ]): React$PropType$Primitive<
-    {height?: number, scale?: number, uri?: string, width?: number} | number,
+    | {
+        height?: number,
+        scale?: number,
+        uri?: string,
+        width?: number,
+        ...
+      }
+    | number,
   >),
 
   accessible: PropTypes.bool,
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js
index 1d13e7ed74a..ef60608bd0e 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js
@@ -15,6 +15,7 @@ const PropTypes = require('prop-types');
 const PointPropType: React$PropType$Primitive<{
   x?: number,
   y?: number,
+  ...
 }> = PropTypes.shape({
   x: PropTypes.number,
   y: PropTypes.number,
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js b/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js
index 6db04c44912..d8e468359e2 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js
@@ -18,7 +18,11 @@ const DeprecatedShadowPropTypesIOS = {
   shadowOffset: (ReactPropTypes.shape({
     width: ReactPropTypes.number,
     height: ReactPropTypes.number,
-  }): React$PropType$Primitive<{height?: number, width?: number}>),
+  }): React$PropType$Primitive<{
+    height?: number,
+    width?: number,
+    ...
+  }>),
   shadowOpacity: ReactPropTypes.number,
   shadowRadius: ReactPropTypes.number,
 };
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js
index dcab087fb5e..f692187a678 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js
@@ -15,6 +15,7 @@ const flattenStyle = require('../StyleSheet/flattenStyle');
 
 function DeprecatedStyleSheetPropType(shape: {
   [key: string]: ReactPropsCheckType,
+  ...,
 }): ReactPropsCheckType {
   const shapePropType = deprecatedCreateStrictShapeTypeChecker(shape);
   return function(props, propName, componentName, location?, ...rest) {
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedTextInputPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedTextInputPropTypes.js
index 8325bd4882e..275d607b948 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedTextInputPropTypes.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedTextInputPropTypes.js
@@ -398,7 +398,11 @@ module.exports = {
   selection: (PropTypes.shape({
     start: PropTypes.number.isRequired,
     end: PropTypes.number,
-  }): React$PropType$Primitive<{end?: number, start: number}>),
+  }): React$PropType$Primitive<{
+    end?: number,
+    start: number,
+    ...
+  }>),
   /**
    * The value to show for the text input. `TextInput` is a controlled
    * component, which means the native value will be forced to match this
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedTextStylePropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedTextStylePropTypes.js
index 428b2d38aab..1c41ff46259 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedTextStylePropTypes.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedTextStylePropTypes.js
@@ -74,7 +74,11 @@ const DeprecatedTextStylePropTypes = {
   textShadowOffset: (ReactPropTypes.shape({
     width: ReactPropTypes.number,
     height: ReactPropTypes.number,
-  }): React$PropType$Primitive<{height?: number, width?: number}>),
+  }): React$PropType$Primitive<{
+    height?: number,
+    width?: number,
+    ...
+  }>),
   textShadowRadius: ReactPropTypes.number,
   textShadowColor: DeprecatedColorPropType,
   /**
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js
index 78b445e754b..daba0d83676 100644
--- a/Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js
@@ -58,18 +58,18 @@ const DeprecatedTransformPropTypes = {
     ]),
   ): React$PropType$Primitive<
     Array<
-      | {perspective?: number}
-      | {rotate?: string}
-      | {rotateX?: string}
-      | {rotateY?: string}
-      | {rotateZ?: string}
-      | {scale?: number}
-      | {scaleX?: number}
-      | {scaleY?: number}
-      | {translateX?: number}
-      | {translateY?: number}
-      | {skewX?: string}
-      | {skewY?: string},
+      | {perspective?: number, ...}
+      | {rotate?: string, ...}
+      | {rotateX?: string, ...}
+      | {rotateY?: string, ...}
+      | {rotateZ?: string, ...}
+      | {scale?: number, ...}
+      | {scaleX?: number, ...}
+      | {scaleY?: number, ...}
+      | {translateX?: number, ...}
+      | {translateY?: number, ...}
+      | {skewX?: string, ...}
+      | {skewY?: string, ...},
     >,
   >),
   transformMatrix: TransformMatrixPropType,
diff --git a/Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js b/Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js
index 382e73432a1..b9249abab95 100644
--- a/Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js
+++ b/Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js
@@ -14,6 +14,7 @@ const invariant = require('invariant');
 
 function deprecatedCreateStrictShapeTypeChecker(shapeTypes: {
   [key: string]: ReactPropsCheckType,
+  ...,
 }): ReactPropsChainableTypeChecker {
   function checkType(
     isRequired,
@@ -70,7 +71,7 @@ function deprecatedCreateStrictShapeTypeChecker(shapeTypes: {
     }
   }
   function chainedCheckType(
-    props: {[key: string]: any},
+    props: {[key: string]: any, ...},
     propName: string,
     componentName: string,
     location?: string,
diff --git a/Libraries/EventEmitter/NativeEventEmitter.js b/Libraries/EventEmitter/NativeEventEmitter.js
index 6b70ef03df0..59e03aa47d8 100644
--- a/Libraries/EventEmitter/NativeEventEmitter.js
+++ b/Libraries/EventEmitter/NativeEventEmitter.js
@@ -21,6 +21,7 @@ import type EmitterSubscription from '../vendor/emitter/EmitterSubscription';
 type NativeModule = {
   +addListener: (eventType: string) => void,
   +removeListeners: (count: number) => void,
+  ...
 };
 
 /**
diff --git a/Libraries/Experimental/Incremental.js b/Libraries/Experimental/Incremental.js
index ba16f91c932..11174c0c833 100644
--- a/Libraries/Experimental/Incremental.js
+++ b/Libraries/Experimental/Incremental.js
@@ -90,10 +90,9 @@ export type Props = {
    */
   name: string,
   children: React.Node,
+  ...
 };
-type State = {
-  doIncrementalRender: boolean,
-};
+type State = {doIncrementalRender: boolean, ...};
 
 class Incremental extends React.Component<Props, State> {
   props: Props;
@@ -191,7 +190,9 @@ export type Context = {
   incrementalGroup: ?{
     groupId: string,
     incrementalCount: number,
+    ...
   },
+  ...
 };
 
 module.exports = Incremental;
diff --git a/Libraries/Experimental/IncrementalExample.js b/Libraries/Experimental/IncrementalExample.js
index 4d551053e4f..cf94088afac 100644
--- a/Libraries/Experimental/IncrementalExample.js
+++ b/Libraries/Experimental/IncrementalExample.js
@@ -36,7 +36,11 @@ let totalWidgets = 0;
 
 class SlowWidget extends React.Component<
   $FlowFixMeProps,
-  {ctorTimestamp: number, timeToMount: number},
+  {
+    ctorTimestamp: number,
+    timeToMount: number,
+    ...
+  },
 > {
   constructor(props, context) {
     super(props, context);
@@ -92,7 +96,7 @@ function Block(props: Object) {
 
 const Row = (props: Object) => <View style={styles.row} {...props} />;
 
-class IncrementalExample extends React.Component<mixed, {stats: ?Object}> {
+class IncrementalExample extends React.Component<mixed, {stats: ?Object, ...}> {
   static title: string = '<Incremental*>';
   static description: string =
     'Enables incremental rendering of complex components.';
diff --git a/Libraries/Experimental/IncrementalGroup.js b/Libraries/Experimental/IncrementalGroup.js
index 6c2098cea71..53f11d8d06f 100644
--- a/Libraries/Experimental/IncrementalGroup.js
+++ b/Libraries/Experimental/IncrementalGroup.js
@@ -33,7 +33,9 @@ import type {Props, Context} from './Incremental';
  *
  * See Incremental.js for more info.
  */
-class IncrementalGroup extends React.Component<Props & {disabled?: boolean}> {
+class IncrementalGroup extends React.Component<
+  Props & {disabled?: boolean, ...},
+> {
   context: Context;
   _groupInc: string;
   UNSAFE_componentWillMount() {
diff --git a/Libraries/Image/AssetRegistry.js b/Libraries/Image/AssetRegistry.js
index 15ef797c6ee..088187ff3e7 100644
--- a/Libraries/Image/AssetRegistry.js
+++ b/Libraries/Image/AssetRegistry.js
@@ -20,6 +20,7 @@ export type PackagerAsset = {
   +hash: string,
   +name: string,
   +type: string,
+  ...
 };
 
 const assets: Array<PackagerAsset> = [];
diff --git a/Libraries/Image/Image.android.js b/Libraries/Image/Image.android.js
index 3f4e023185a..fec14e0487f 100644
--- a/Libraries/Image/Image.android.js
+++ b/Libraries/Image/Image.android.js
@@ -59,13 +59,18 @@ const ImageProps = {
       }),
     ),
   ]): React$PropType$Primitive<
-    | {headers?: {[string]: string}, uri?: string}
+    | {
+        headers?: {[string]: string, ...},
+        uri?: string,
+        ...
+      }
     | number
     | Array<{
-        headers?: {[string]: string},
+        headers?: {[string]: string, ...},
         height?: number,
         uri?: string,
         width?: number,
+        ...
       }>,
   >),
   /**
@@ -87,7 +92,7 @@ const ImageProps = {
     }),
     // Opaque type returned by require('./image.jpg')
     PropTypes.number,
-  ]): React$PropType$Primitive<{uri?: string} | number>),
+  ]): React$PropType$Primitive<{uri?: string, ...} | number>),
   progressiveRenderingEnabled: PropTypes.bool,
   fadeDuration: PropTypes.number,
   /**
@@ -168,7 +173,7 @@ function getSize(
  */
 function getSizeWithHeaders(
   url: string,
-  headers: {[string]: string},
+  headers: {[string]: string, ...},
   success: (width: number, height: number) => void,
   failure?: (error: any) => void,
 ): any {
@@ -201,7 +206,7 @@ function abortPrefetch(requestId: number) {
  */
 async function queryCache(
   urls: Array<string>,
-): Promise<{[string]: 'memory' | 'disk' | 'disk/memory'}> {
+): Promise<{[string]: 'memory' | 'disk' | 'disk/memory', ...}> {
   return await NativeImageLoaderAndroid.queryCache(urls);
 }
 
diff --git a/Libraries/Image/Image.ios.js b/Libraries/Image/Image.ios.js
index cfc14ae5e8f..5cd788918f7 100644
--- a/Libraries/Image/Image.ios.js
+++ b/Libraries/Image/Image.ios.js
@@ -42,7 +42,7 @@ function getSize(
 
 function getSizeWithHeaders(
   uri: string,
-  headers: {[string]: string},
+  headers: {[string]: string, ...},
   success: (width: number, height: number) => void,
   failure?: (error: any) => void,
 ): any {
@@ -64,7 +64,7 @@ function prefetch(url: string): any {
 
 async function queryCache(
   urls: Array<string>,
-): Promise<{[string]: 'memory' | 'disk' | 'disk/memory'}> {
+): Promise<{[string]: 'memory' | 'disk' | 'disk/memory', ...}> {
   return await NativeImageLoaderIOS.queryCache(urls);
 }
 
diff --git a/Libraries/Image/ImageSource.js b/Libraries/Image/ImageSource.js
index 2a247513448..e2f280f66a0 100644
--- a/Libraries/Image/ImageSource.js
+++ b/Libraries/Image/ImageSource.js
@@ -23,32 +23,27 @@ export type ImageURISource = $ReadOnly<{
    * function).
    */
   uri?: ?string,
-
   /**
    * `bundle` is the iOS asset bundle which the image is included in. This
    * will default to [NSBundle mainBundle] if not set.
    * @platform ios
    */
   bundle?: ?string,
-
   /**
    * `method` is the HTTP Method to use. Defaults to GET if not specified.
    */
   method?: ?string,
-
   /**
    * `headers` is an object representing the HTTP headers to send along with the
    * request for a remote image.
    */
   headers?: ?Object,
-
   /**
    * `body` is the HTTP body to send with the request. This must be a valid
    * UTF-8 string, and will be sent exactly as specified, with no
    * additional encoding (e.g. URL-escaping or base64) applied.
    */
   body?: ?string,
-
   /**
    * `cache` determines how the requests handles potentially cached
    * responses.
@@ -70,19 +65,18 @@ export type ImageURISource = $ReadOnly<{
    * @platform ios
    */
   cache?: ?('default' | 'reload' | 'force-cache' | 'only-if-cached'),
-
   /**
    * `width` and `height` can be specified if known at build time, in which case
    * these will be used to set the default `<Image/>` component dimensions.
    */
   width?: ?number,
   height?: ?number,
-
   /**
    * `scale` is used to indicate the scale factor of the image. Defaults to 1.0 if
    * unspecified, meaning that one image pixel equates to one display point / DIP.
    */
   scale?: ?number,
+  ...
 }>;
 
 // We have to export any because of an issue in Flow with objects that come from Relay:
diff --git a/Libraries/Image/ImageViewNativeComponent.js b/Libraries/Image/ImageViewNativeComponent.js
index 27618567bc8..a2f9bd58767 100644
--- a/Libraries/Image/ImageViewNativeComponent.js
+++ b/Libraries/Image/ImageViewNativeComponent.js
@@ -33,7 +33,7 @@ type NativeProps = $ReadOnly<{|
 
   // Android native props
   shouldNotifyLoadEvents?: boolean,
-  src?: ?ResolvedAssetSource | $ReadOnlyArray<{uri: string}>,
+  src?: ?ResolvedAssetSource | $ReadOnlyArray<{uri: string, ...}>,
   headers?: ?string,
   defaultSrc?: ?string,
   loadingIndicatorSrc?: ?string,
diff --git a/Libraries/Image/NativeImageLoaderAndroid.js b/Libraries/Image/NativeImageLoaderAndroid.js
index cd14b8cfa29..5fc3d2709ac 100644
--- a/Libraries/Image/NativeImageLoaderAndroid.js
+++ b/Libraries/Image/NativeImageLoaderAndroid.js
@@ -18,11 +18,21 @@ export interface Spec extends TurboModule {
   +getConstants: () => {||};
   +getSize: (
     uri: string,
-  ) => Promise<$ReadOnly<{width: number, height: number}>>;
+  ) => Promise<
+    $ReadOnly<{
+      width: number,
+      height: number,
+      ...
+    }>,
+  >;
   +getSizeWithHeaders: (
     uri: string,
     headers: Object,
-  ) => Promise<{width: number, height: number}>;
+  ) => Promise<{
+    width: number,
+    height: number,
+    ...
+  }>;
   +prefetchImage: (uri: string, requestId: number) => Promise<boolean>;
   +queryCache: (uris: Array<string>) => Promise<Object>;
 }
diff --git a/Libraries/Image/NativeImageLoaderIOS.js b/Libraries/Image/NativeImageLoaderIOS.js
index e11c9d5507a..842294d0af2 100644
--- a/Libraries/Image/NativeImageLoaderIOS.js
+++ b/Libraries/Image/NativeImageLoaderIOS.js
@@ -20,7 +20,11 @@ export interface Spec extends TurboModule {
   +getSizeWithHeaders: (
     uri: string,
     headers: Object,
-  ) => Promise<{width: number, height: number}>;
+  ) => Promise<{
+    width: number,
+    height: number,
+    ...
+  }>;
   +prefetchImage: (uri: string) => Promise<boolean>;
   +queryCache: (uris: Array<string>) => Promise<Object>;
 }
diff --git a/Libraries/Inspector/ElementBox.js b/Libraries/Inspector/ElementBox.js
index 2e67b18f772..07684d2204d 100644
--- a/Libraries/Inspector/ElementBox.js
+++ b/Libraries/Inspector/ElementBox.js
@@ -92,6 +92,7 @@ type Style = {
   right: number,
   bottom: number,
   left: number,
+  ...
 };
 
 /**
diff --git a/Libraries/Inspector/ElementProperties.js b/Libraries/Inspector/ElementProperties.js
index 31f74406a9e..48a7ff491b6 100644
--- a/Libraries/Inspector/ElementProperties.js
+++ b/Libraries/Inspector/ElementProperties.js
@@ -31,6 +31,7 @@ type Props = $ReadOnly<{|
   source?: ?{
     fileName?: string,
     lineNumber?: number,
+    ...
   },
   frame?: ?Object,
   selection?: ?number,
diff --git a/Libraries/Inspector/Inspector.js b/Libraries/Inspector/Inspector.js
index 1100100964b..a68160ad86d 100644
--- a/Libraries/Inspector/Inspector.js
+++ b/Libraries/Inspector/Inspector.js
@@ -25,6 +25,7 @@ const invariant = require('invariant');
 
 export type ReactRenderer = {
   getInspectorDataForViewTag: (viewTag: number) => Object,
+  ...
 };
 
 const hook = window.__REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -68,6 +69,7 @@ class Inspector extends React.Component<
   {
     inspectedViewTag: ?number,
     onRequestRerenderApp: (callback: (tag: ?number) => void) => void,
+    ...
   },
   {
     devtoolsAgent: ?Object,
@@ -79,6 +81,7 @@ class Inspector extends React.Component<
     inspected: any,
     inspectedViewTag: any,
     networking: boolean,
+    ...
   },
 > {
   _hideTimeoutID: TimeoutID | null = null;
diff --git a/Libraries/Inspector/NetworkOverlay.js b/Libraries/Inspector/NetworkOverlay.js
index b2956a07761..45e6bdadcbf 100644
--- a/Libraries/Inspector/NetworkOverlay.js
+++ b/Libraries/Inspector/NetworkOverlay.js
@@ -44,6 +44,7 @@ type NetworkRequestInfo = {
   messages?: string,
   serverClose?: Object,
   serverError?: Object,
+  ...
 };
 
 type Props = $ReadOnly<{||}>;
@@ -101,7 +102,7 @@ class NetworkOverlay extends React.Component<Props, State> {
   // Map of `socketId` -> `index in `this.state.requests`.
   _socketIdMap = {};
   // Map of `xhr._index` -> `index in `this.state.requests`.
-  _xhrIdMap: {[key: number]: number} = {};
+  _xhrIdMap: {[key: number]: number, ...} = {};
 
   state: State = {
     detailRowId: null,
diff --git a/Libraries/Inspector/PerformanceOverlay.js b/Libraries/Inspector/PerformanceOverlay.js
index 56b86fb16c5..a7307bda917 100644
--- a/Libraries/Inspector/PerformanceOverlay.js
+++ b/Libraries/Inspector/PerformanceOverlay.js
@@ -16,7 +16,7 @@ const StyleSheet = require('../StyleSheet/StyleSheet');
 const Text = require('../Text/Text');
 const View = require('../Components/View/View');
 
-class PerformanceOverlay extends React.Component<{}> {
+class PerformanceOverlay extends React.Component<{...}> {
   render(): React.Node {
     const perfLogs = PerformanceLogger.getTimespans();
     const items = [];
diff --git a/Libraries/Interaction/Batchinator.js b/Libraries/Interaction/Batchinator.js
index f7f1b2afa7a..5193c40d335 100644
--- a/Libraries/Interaction/Batchinator.js
+++ b/Libraries/Interaction/Batchinator.js
@@ -37,7 +37,7 @@ const InteractionManager = require('./InteractionManager');
 class Batchinator {
   _callback: () => void;
   _delay: number;
-  _taskHandle: ?{cancel: () => void};
+  _taskHandle: ?{cancel: () => void, ...};
   constructor(callback: () => void, delayMS: number) {
     this._delay = delayMS;
     this._callback = callback;
@@ -48,7 +48,7 @@ class Batchinator {
    * By default, if there is a pending task the callback is run immediately. Set the option abort to
    * true to not call the callback if it was pending.
    */
-  dispose(options: {abort: boolean} = {abort: false}) {
+  dispose(options: {abort: boolean, ...} = {abort: false}) {
     if (this._taskHandle) {
       this._taskHandle.cancel();
       if (!options.abort) {
diff --git a/Libraries/Interaction/FrameRateLogger.js b/Libraries/Interaction/FrameRateLogger.js
index 73a59454346..434e962b027 100644
--- a/Libraries/Interaction/FrameRateLogger.js
+++ b/Libraries/Interaction/FrameRateLogger.js
@@ -38,6 +38,7 @@ const FrameRateLogger = {
   setGlobalOptions: function(options: {
     debug?: boolean,
     reportStackTraces?: boolean,
+    ...
   }) {
     if (options.debug !== undefined) {
       invariant(
diff --git a/Libraries/Interaction/InteractionManager.js b/Libraries/Interaction/InteractionManager.js
index 8784d9bce53..02912bbc3cf 100644
--- a/Libraries/Interaction/InteractionManager.js
+++ b/Libraries/Interaction/InteractionManager.js
@@ -87,7 +87,12 @@ const InteractionManager = {
    */
   runAfterInteractions(
     task: ?Task,
-  ): {then: Function, done: Function, cancel: Function} {
+  ): {
+    then: Function,
+    done: Function,
+    cancel: Function,
+    ...
+  } {
     const tasks = [];
     const promise = new Promise(resolve => {
       _scheduleUpdate();
diff --git a/Libraries/Interaction/InteractionStallDebugger.js b/Libraries/Interaction/InteractionStallDebugger.js
index 7facffb1782..78c6bc4258a 100644
--- a/Libraries/Interaction/InteractionStallDebugger.js
+++ b/Libraries/Interaction/InteractionStallDebugger.js
@@ -14,7 +14,7 @@ const BridgeSpyStallHandler = require('./BridgeSpyStallHandler');
 const JSEventLoopWatchdog = require('./JSEventLoopWatchdog');
 
 const InteractionStallDebugger = {
-  install(options: {thresholdMS: number}): void {
+  install(options: {thresholdMS: number, ...}): void {
     JSEventLoopWatchdog.install(options);
     BridgeSpyStallHandler.register();
   },
diff --git a/Libraries/Interaction/JSEventLoopWatchdog.js b/Libraries/Interaction/JSEventLoopWatchdog.js
index f8f4e450455..c2787f188fd 100644
--- a/Libraries/Interaction/JSEventLoopWatchdog.js
+++ b/Libraries/Interaction/JSEventLoopWatchdog.js
@@ -15,7 +15,12 @@ const performanceNow = require('fbjs/lib/performanceNow');
 
 type Handler = {
   onIterate?: () => void,
-  onStall: (params: {lastInterval: number, busyTime: number}) => ?string,
+  onStall: (params: {
+    lastInterval: number,
+    busyTime: number,
+    ...
+  }) => ?string,
+  ...
 };
 
 /**
@@ -44,7 +49,7 @@ const JSEventLoopWatchdog = {
   addHandler: function(handler: Handler) {
     handlers.push(handler);
   },
-  install: function({thresholdMS}: {thresholdMS: number}) {
+  install: function({thresholdMS}: {thresholdMS: number, ...}) {
     acceptableBusyTime = thresholdMS;
     if (installed) {
       return;
diff --git a/Libraries/Interaction/PanResponder.js b/Libraries/Interaction/PanResponder.js
index d70797df24c..1aaf9fce9ec 100644
--- a/Libraries/Interaction/PanResponder.js
+++ b/Libraries/Interaction/PanResponder.js
@@ -559,7 +559,7 @@ const PanResponder = {
 };
 
 function clearInteractionHandle(
-  interactionState: {handle: ?number},
+  interactionState: {handle: ?number, ...},
   callback: ?(ActiveCallback | PassiveCallback),
   event: PressEvent,
   gestureState: GestureState,
diff --git a/Libraries/Interaction/TaskQueue.js b/Libraries/Interaction/TaskQueue.js
index 17332b5821e..bf15d06a090 100644
--- a/Libraries/Interaction/TaskQueue.js
+++ b/Libraries/Interaction/TaskQueue.js
@@ -16,10 +16,12 @@ const invariant = require('invariant');
 type SimpleTask = {
   name: string,
   run: () => void,
+  ...
 };
 type PromiseTask = {
   name: string,
   gen: () => Promise<any>,
+  ...
 };
 export type Task = Function | SimpleTask | PromiseTask;
 
@@ -49,7 +51,7 @@ class TaskQueue {
    * `onMoreTasks` is invoked when `PromiseTask`s resolve if there are more
    * tasks to process.
    */
-  constructor({onMoreTasks}: {onMoreTasks: () => void}) {
+  constructor({onMoreTasks}: {onMoreTasks: () => void, ...}) {
     this._onMoreTasks = onMoreTasks;
     this._queueStack = [{tasks: [], popable: false}];
   }
@@ -122,7 +124,11 @@ class TaskQueue {
     }
   }
 
-  _queueStack: Array<{tasks: Array<Task>, popable: boolean}>;
+  _queueStack: Array<{
+    tasks: Array<Task>,
+    popable: boolean,
+    ...
+  }>;
   _onMoreTasks: () => void;
 
   _getCurrentQueue(): Array<Task> {
diff --git a/Libraries/JSInspector/JSInspector.js b/Libraries/JSInspector/JSInspector.js
index 5cb7b612f00..44917ac36b1 100644
--- a/Libraries/JSInspector/JSInspector.js
+++ b/Libraries/JSInspector/JSInspector.js
@@ -17,7 +17,7 @@ interface Agent {
 }
 
 // Flow doesn't support static declarations in interface
-type AgentClass = Class<Agent> & {DOMAIN: string};
+type AgentClass = Class<Agent> & {DOMAIN: string, ...};
 
 declare function __registerInspectorAgent(type: AgentClass): void;
 declare function __inspectorTimestamp(): number;
diff --git a/Libraries/JSInspector/NetworkAgent.js b/Libraries/JSInspector/NetworkAgent.js
index 4ad89bae6af..9f48f7cb1f2 100644
--- a/Libraries/JSInspector/NetworkAgent.js
+++ b/Libraries/JSInspector/NetworkAgent.js
@@ -64,6 +64,7 @@ type Initiator = {
   stackTrace?: StackTrace,
   url?: string,
   lineNumber?: number,
+  ...
 };
 
 type ResourcePriority = 'VeryLow' | 'Low' | 'Medium' | 'High' | 'VeryHigh';
@@ -75,6 +76,7 @@ type Request = {
   postData?: string,
   mixedContentType?: 'blockable' | 'optionally-blockable' | 'none',
   initialPriority: ResourcePriority,
+  ...
 };
 
 type Response = {
@@ -92,6 +94,7 @@ type Response = {
   encodedDataLength: number,
   timing?: ResourceTiming,
   securityState: SecurityState,
+  ...
 };
 
 type RequestWillBeSentEvent = {
@@ -106,6 +109,7 @@ type RequestWillBeSentEvent = {
   // This is supposed to be optional but the inspector crashes without it,
   // see https://bugs.chromium.org/p/chromium/issues/detail?id=653138
   type: ResourceType,
+  ...
 };
 
 type ResponseReceivedEvent = {
@@ -115,6 +119,7 @@ type ResponseReceivedEvent = {
   timestamp: Timestamp,
   type: ResourceType,
   response: Response,
+  ...
 };
 
 type DataReceived = {
@@ -122,12 +127,14 @@ type DataReceived = {
   timestamp: Timestamp,
   dataLength: number,
   encodedDataLength: number,
+  ...
 };
 
 type LoadingFinishedEvent = {
   requestId: RequestId,
   timestamp: Timestamp,
   encodedDataLength: number,
+  ...
 };
 
 type LoadingFailedEvent = {
@@ -137,6 +144,7 @@ type LoadingFailedEvent = {
   errorText: string,
   canceled?: boolean,
   blockedReason?: BlockedReason,
+  ...
 };
 
 class Interceptor {
@@ -248,6 +256,7 @@ class Interceptor {
 type EnableArgs = {
   maxResourceBufferSize?: number,
   maxTotalBufferSize?: number,
+  ...
 };
 
 class NetworkAgent extends InspectorAgent {
@@ -270,7 +279,12 @@ class NetworkAgent extends InspectorAgent {
     requestId,
   }: {
     requestId: RequestId,
-  }): {body: ?string, base64Encoded: boolean} {
+    ...
+  }): {
+    body: ?string,
+    base64Encoded: boolean,
+    ...
+  } {
     return {body: this.interceptor().getData(requestId), base64Encoded: false};
   }
 
diff --git a/Libraries/Linking/Linking.js b/Libraries/Linking/Linking.js
index 284f2336a5b..8c7dfa9b0c0 100644
--- a/Libraries/Linking/Linking.js
+++ b/Libraries/Linking/Linking.js
@@ -100,7 +100,11 @@ class Linking extends NativeEventEmitter {
    */
   sendIntent(
     action: string,
-    extras?: Array<{key: string, value: string | number | boolean}>,
+    extras?: Array<{
+      key: string,
+      value: string | number | boolean,
+      ...
+    }>,
   ): Promise<void> {
     if (Platform.OS === 'android') {
       return NativeLinking.sendIntent(action, extras);
diff --git a/Libraries/Linking/NativeLinking.js b/Libraries/Linking/NativeLinking.js
index cbb7c1a00bd..b5bc6d8f17c 100644
--- a/Libraries/Linking/NativeLinking.js
+++ b/Libraries/Linking/NativeLinking.js
@@ -24,7 +24,11 @@ export interface Spec extends TurboModule {
   // Android only
   +sendIntent: (
     action: string,
-    extras: ?Array<{key: string, value: string | number | boolean}>,
+    extras: ?Array<{
+      key: string,
+      value: string | number | boolean,
+      ...
+    }>,
   ) => Promise<void>;
 
   // Events
diff --git a/Libraries/Lists/FillRateHelper.js b/Libraries/Lists/FillRateHelper.js
index a6c95003d6c..a1d58669c48 100644
--- a/Libraries/Lists/FillRateHelper.js
+++ b/Libraries/Lists/FillRateHelper.js
@@ -28,7 +28,12 @@ class Info {
   sample_count: number = 0;
 }
 
-type FrameMetrics = {inLayout?: boolean, length: number, offset: number};
+type FrameMetrics = {
+  inLayout?: boolean,
+  length: number,
+  offset: number,
+  ...
+};
 
 const DEBUG = false;
 
@@ -52,7 +57,9 @@ class FillRateHelper {
   _mostlyBlankStartTime = (null: ?number);
   _samplesStartTime = (null: ?number);
 
-  static addListener(callback: FillRateInfo => void): {remove: () => void} {
+  static addListener(
+    callback: FillRateInfo => void,
+  ): {remove: () => void, ...} {
     warning(
       _sampleRate !== null,
       'Call `FillRateHelper.setSampleRate` before `addListener`.',
@@ -133,16 +140,19 @@ class FillRateHelper {
       data: any,
       getItemCount: (data: any) => number,
       initialNumToRender: number,
+      ...
     },
     state: {
       first: number,
       last: number,
+      ...
     },
     scrollMetrics: {
       dOffset: number,
       offset: number,
       velocity: number,
       visibleLength: number,
+      ...
     },
   ): number {
     if (
diff --git a/Libraries/Lists/FlatList.js b/Libraries/Lists/FlatList.js
index a55deaaa030..3ede56e8266 100644
--- a/Libraries/Lists/FlatList.js
+++ b/Libraries/Lists/FlatList.js
@@ -89,7 +89,12 @@ type OptionalProps<ItemT> = {|
   getItemLayout?: (
     data: ?Array<ItemT>,
     index: number,
-  ) => {length: number, offset: number, index: number},
+  ) => {
+    length: number,
+    offset: number,
+    index: number,
+    ...
+  },
   /**
    * If true, renders items next to each other horizontally instead of stacked vertically.
    */
@@ -144,9 +149,11 @@ export type Props<ItemT> = {
       getItemLayout: $PropertyType<VirtualizedListProps, 'getItemLayout'>,
       renderItem: $PropertyType<VirtualizedListProps, 'renderItem'>,
       keyExtractor: $PropertyType<VirtualizedListProps, 'keyExtractor'>,
+      ...
     },
   >,
   ...FlatListProps<ItemT>,
+  ...
 };
 
 const defaultProps = {
@@ -275,7 +282,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
   /**
    * Scrolls to the end of the content. May be janky without `getItemLayout` prop.
    */
-  scrollToEnd(params?: ?{animated?: ?boolean}) {
+  scrollToEnd(params?: ?{animated?: ?boolean, ...}) {
     if (this._listRef) {
       this._listRef.scrollToEnd(params);
     }
@@ -294,6 +301,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     index: number,
     viewOffset?: number,
     viewPosition?: number,
+    ...
   }) {
     if (this._listRef) {
       this._listRef.scrollToIndex(params);
@@ -310,6 +318,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     animated?: ?boolean,
     item: ItemT,
     viewPosition?: number,
+    ...
   }) {
     if (this._listRef) {
       this._listRef.scrollToItem(params);
@@ -321,7 +330,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
    *
    * Check out [scrollToOffset](docs/virtualizedlist.html#scrolltooffset) of VirtualizedList
    */
-  scrollToOffset(params: {animated?: ?boolean, offset: number}) {
+  scrollToOffset(params: {animated?: ?boolean, offset: number, ...}) {
     if (this._listRef) {
       this._listRef.scrollToOffset(params);
     }
@@ -364,7 +373,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     }
   }
 
-  setNativeProps(props: {[string]: mixed}) {
+  setNativeProps(props: {[string]: mixed, ...}) {
     if (this._listRef) {
       this._listRef.setNativeProps(props);
     }
@@ -512,11 +521,13 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     onViewableItemsChanged: ?(info: {
       viewableItems: Array<ViewToken>,
       changed: Array<ViewToken>,
+      ...
     }) => void,
   ) {
     return (info: {
       viewableItems: Array<ViewToken>,
       changed: Array<ViewToken>,
+      ...
     }) => {
       const {numColumns} = this.props;
       if (onViewableItemsChanged) {
diff --git a/Libraries/Lists/SectionList.js b/Libraries/Lists/SectionList.js
index cae14ff81df..52da28685c1 100644
--- a/Libraries/Lists/SectionList.js
+++ b/Libraries/Lists/SectionList.js
@@ -52,7 +52,9 @@ type OptionalProps<SectionT: SectionBase<any>> = {|
       highlight: () => void,
       unhighlight: () => void,
       updateProps: (select: 'leading' | 'trailing', newProps: Object) => void,
+      ...
     },
+    ...
   }) => null | React.Element<any>,
   /**
    * A marker property for telling the list to re-render (since it implements `PureComponent`). If
@@ -81,7 +83,7 @@ type OptionalProps<SectionT: SectionBase<any>> = {|
    * Called once when the scroll position gets within `onEndReachedThreshold` of the rendered
    * content.
    */
-  onEndReached?: ?(info: {distanceFromEnd: number}) => void,
+  onEndReached?: ?(info: {distanceFromEnd: number, ...}) => void,
   /**
    * Note: may have bugs (missing content) in some circumstances - use at your own risk.
    *
@@ -103,6 +105,7 @@ export type Props<SectionT> = {|
         VirtualizedSectionListProps<SectionT>,
         'renderItem',
       >,
+      ...
     },
   >,
   ...RequiredProps<SectionT>,
diff --git a/Libraries/Lists/ViewabilityHelper.js b/Libraries/Lists/ViewabilityHelper.js
index bffa859c202..1ea6b880dad 100644
--- a/Libraries/Lists/ViewabilityHelper.js
+++ b/Libraries/Lists/ViewabilityHelper.js
@@ -18,6 +18,7 @@ export type ViewToken = {
   index: ?number,
   isViewable: boolean,
   section?: any,
+  ...
 };
 
 export type ViewabilityConfigCallbackPair = {
@@ -25,7 +26,9 @@ export type ViewabilityConfigCallbackPair = {
   onViewableItemsChanged: (info: {
     viewableItems: Array<ViewToken>,
     changed: Array<ViewToken>,
+    ...
   }) => void,
+  ...
 };
 
 export type ViewabilityConfig = {|
@@ -99,8 +102,19 @@ class ViewabilityHelper {
     itemCount: number,
     scrollOffset: number,
     viewportHeight: number,
-    getFrameMetrics: (index: number) => ?{length: number, offset: number},
-    renderRange?: {first: number, last: number}, // Optional optimization to reduce the scan size
+    getFrameMetrics: (
+      index: number,
+    ) => ?{
+      length: number,
+      offset: number,
+      ...
+    },
+    // Optional optimization to reduce the scan size
+    renderRange?: {
+      first: number,
+      last: number,
+      ...
+    },
   ): Array<number> {
     const {
       itemVisiblePercentThreshold,
@@ -165,13 +179,25 @@ class ViewabilityHelper {
     itemCount: number,
     scrollOffset: number,
     viewportHeight: number,
-    getFrameMetrics: (index: number) => ?{length: number, offset: number},
+    getFrameMetrics: (
+      index: number,
+    ) => ?{
+      length: number,
+      offset: number,
+      ...
+    },
     createViewToken: (index: number, isViewable: boolean) => ViewToken,
     onViewableItemsChanged: ({
       viewableItems: Array<ViewToken>,
       changed: Array<ViewToken>,
+      ...
     }) => void,
-    renderRange?: {first: number, last: number}, // Optional optimization to reduce the scan size
+    // Optional optimization to reduce the scan size
+    renderRange?: {
+      first: number,
+      last: number,
+      ...
+    },
   ): void {
     if (
       (this._config.waitForInteraction && !this._hasInteracted) ||
diff --git a/Libraries/Lists/VirtualizeUtils.js b/Libraries/Lists/VirtualizeUtils.js
index ef546940a60..2d4c8ae8c60 100644
--- a/Libraries/Lists/VirtualizeUtils.js
+++ b/Libraries/Lists/VirtualizeUtils.js
@@ -20,7 +20,13 @@ const invariant = require('invariant');
 function elementsThatOverlapOffsets(
   offsets: Array<number>,
   itemCount: number,
-  getFrameMetrics: (index: number) => {length: number, offset: number},
+  getFrameMetrics: (
+    index: number,
+  ) => {
+    length: number,
+    offset: number,
+    ...
+  },
 ): Array<number> {
   const out = [];
   let outLength = 0;
@@ -52,8 +58,16 @@ function elementsThatOverlapOffsets(
  * faster.
  */
 function newRangeCount(
-  prev: {first: number, last: number},
-  next: {first: number, last: number},
+  prev: {
+    first: number,
+    last: number,
+    ...
+  },
+  next: {
+    first: number,
+    last: number,
+    ...
+  },
 ): number {
   return (
     next.last -
@@ -78,16 +92,32 @@ function computeWindowedRenderLimits(
     getItemCount: (data: any) => number,
     maxToRenderPerBatch: number,
     windowSize: number,
+    ...
+  },
+  prev: {
+    first: number,
+    last: number,
+    ...
+  },
+  getFrameMetricsApprox: (
+    index: number,
+  ) => {
+    length: number,
+    offset: number,
+    ...
   },
-  prev: {first: number, last: number},
-  getFrameMetricsApprox: (index: number) => {length: number, offset: number},
   scrollMetrics: {
     dt: number,
     offset: number,
     velocity: number,
     visibleLength: number,
+    ...
   },
-): {first: number, last: number} {
+): {
+  first: number,
+  last: number,
+  ...
+} {
   const {data, getItemCount, maxToRenderPerBatch, windowSize} = props;
   const itemCount = getItemCount(data);
   if (itemCount === 0) {
diff --git a/Libraries/Lists/VirtualizedList.js b/Libraries/Lists/VirtualizedList.js
index b62c81ad371..927849b102d 100644
--- a/Libraries/Lists/VirtualizedList.js
+++ b/Libraries/Lists/VirtualizedList.js
@@ -42,12 +42,14 @@ export type Separators = {
   highlight: () => void,
   unhighlight: () => void,
   updateProps: (select: 'leading' | 'trailing', newProps: Object) => void,
+  ...
 };
 
 export type RenderItemProps<ItemT> = {
   item: ItemT,
   index: number,
   separators: Separators,
+  ...
 };
 
 export type RenderItemType<ItemT> = (
@@ -59,7 +61,9 @@ type ViewabilityHelperCallbackTuple = {
   onViewableItemsChanged: (info: {
     viewableItems: Array<ViewToken>,
     changed: Array<ViewToken>,
+    ...
   }) => void,
+  ...
 };
 
 type RequiredProps = {|
@@ -96,10 +100,16 @@ type OptionalProps = {|
    * `data` prop, stick it here and treat it immutably.
    */
   extraData?: any,
+  // e.g. height, y
   getItemLayout?: (
     data: any,
     index: number,
-  ) => {length: number, offset: number, index: number}, // e.g. height, y
+  ) => {
+    length: number,
+    offset: number,
+    index: number,
+    ...
+  },
   horizontal?: ?boolean,
   /**
    * How many items to render in the initial batch. This should be enough to fill the screen but not
@@ -197,7 +207,7 @@ type OptionalProps = {|
    * Called once when the scroll position gets within `onEndReachedThreshold` of the rendered
    * content.
    */
-  onEndReached?: ?(info: {distanceFromEnd: number}) => void,
+  onEndReached?: ?(info: {distanceFromEnd: number, ...}) => void,
   /**
    * How far from the end (in units of visible length of the list) the bottom edge of the
    * list must be from the end of the content to trigger the `onEndReached` callback.
@@ -219,6 +229,7 @@ type OptionalProps = {|
     index: number,
     highestMeasuredFrameIndex: number,
     averageItemLength: number,
+    ...
   }) => void,
   /**
    * Called when the viewability of rows changes, as defined by the
@@ -227,6 +238,7 @@ type OptionalProps = {|
   onViewableItemsChanged?: ?(info: {
     viewableItems: Array<ViewToken>,
     changed: Array<ViewToken>,
+    ...
   }) => void,
   persistentScrollbar?: ?boolean,
   /**
@@ -308,15 +320,21 @@ type Frame = {
   length: number,
   index: number,
   inLayout: boolean,
+  ...
 };
 
 type ChildListState = {
   first: number,
   last: number,
-  frames: {[key: number]: Frame},
+  frames: {[key: number]: Frame, ...},
+  ...
 };
 
-type State = {first: number, last: number};
+type State = {
+  first: number,
+  last: number,
+  ...
+};
 
 /**
  * Base implementation for the more convenient [`<FlatList>`](/react-native/docs/flatlist.html)
@@ -350,7 +368,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
   props: Props;
 
   // scrollToEnd may be janky without getItemLayout prop
-  scrollToEnd(params?: ?{animated?: ?boolean}) {
+  scrollToEnd(params?: ?{animated?: ?boolean, ...}) {
     const animated = params ? params.animated : true;
     const veryLast = this.props.getItemCount(this.props.data) - 1;
     const frame = this._getFrameMetricsApprox(veryLast);
@@ -377,6 +395,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     index: number,
     viewOffset?: number,
     viewPosition?: number,
+    ...
   }) {
     const {
       data,
@@ -429,6 +448,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     animated?: ?boolean,
     item: Item,
     viewPosition?: number,
+    ...
   }) {
     const {item} = params;
     const {data, getItem, getItemCount} = this.props;
@@ -451,7 +471,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
    * Param `animated` (`true` by default) defines whether the list
    * should do an animation while scrolling.
    */
-  scrollToOffset(params: {animated?: ?boolean, offset: number}) {
+  scrollToOffset(params: {animated?: ?boolean, offset: number, ...}) {
     const {animated, offset} = params;
 
     if (this._scrollRef == null) {
@@ -596,6 +616,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
         timestamp: number,
         velocity: number,
         visibleLength: number,
+        ...
       },
       horizontal: ?boolean,
       getOutermostParentListRef: Function,
@@ -604,11 +625,14 @@ class VirtualizedList extends React.PureComponent<Props, State> {
         cellKey: string,
         key: string,
         ref: VirtualizedList,
+        ...
       }) => ?ChildListState,
       unregisterAsNestedChild: ({
         key: string,
         state: ChildListState,
+        ...
       }) => void,
+      ...
     },
   |} {
     return {
@@ -655,6 +679,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     cellKey: string,
     key: string,
     ref: VirtualizedList,
+    ...
   }): ?ChildListState => {
     // Register the mapping between this child key and the cellKey for its cell
     const childListsInCell =
@@ -683,6 +708,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
   _unregisterAsNestedChild = (childList: {
     key: string,
     state: ChildListState,
+    ...
   }): void => {
     this._nestedChildLists.set(childList.key, {
       ref: null,
@@ -1182,7 +1208,11 @@ class VirtualizedList extends React.PureComponent<Props, State> {
   _indicesToKeys: Map<number, string> = new Map();
   _nestedChildLists: Map<
     string,
-    {ref: ?VirtualizedList, state: ?ChildListState},
+    {
+      ref: ?VirtualizedList,
+      state: ?ChildListState,
+      ...
+    },
   > = new Map();
   _offsetFromParentVirtualizedList: number = 0;
   _prevParentOffset: number = 0;
@@ -1430,11 +1460,23 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     );
   }
 
-  _selectLength(metrics: $ReadOnly<{height: number, width: number}>): number {
+  _selectLength(
+    metrics: $ReadOnly<{
+      height: number,
+      width: number,
+      ...
+    }>,
+  ): number {
     return !this.props.horizontal ? metrics.height : metrics.width;
   }
 
-  _selectOffset(metrics: $ReadOnly<{x: number, y: number}>): number {
+  _selectOffset(
+    metrics: $ReadOnly<{
+      x: number,
+      y: number,
+      ...
+    }>,
+  ): number {
     return !this.props.horizontal ? metrics.y : metrics.x;
   }
 
@@ -1492,6 +1534,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
   _convertParentScrollMetrics = (metrics: {
     visibleLength: number,
     offset: number,
+    ...
   }) => {
     // Offset of the top of the nested list relative to the top of its parent's viewport
     const offset = metrics.offset - this._offsetFromParentVirtualizedList;
@@ -1739,7 +1782,11 @@ class VirtualizedList extends React.PureComponent<Props, State> {
 
   _getFrameMetricsApprox = (
     index: number,
-  ): {length: number, offset: number} => {
+  ): {
+    length: number,
+    offset: number,
+    ...
+  } => {
     const frame = this._getFrameMetrics(index);
     if (frame && frame.index === index) {
       // check for invalid frames due to row re-ordering
@@ -1764,6 +1811,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     offset: number,
     index: number,
     inLayout?: boolean,
+    ...
   } => {
     const {
       data,
@@ -1828,18 +1876,27 @@ type CellRendererProps = {
   index: number,
   inversionStyle: ViewStyleProp,
   item: Item,
-  onLayout: (event: Object) => void, // This is extracted by ScrollViewStickyHeader
+  // This is extracted by ScrollViewStickyHeader
+  onLayout: (event: Object) => void,
   onUnmount: (cellKey: string) => void,
   onUpdateSeparators: (cellKeys: Array<?string>, props: Object) => void,
   parentProps: {
+    // e.g. height, y,
     getItemLayout?: (
       data: any,
       index: number,
-    ) => {length: number, offset: number, index: number}, // e.g. height, y,
+    ) => {
+      length: number,
+      offset: number,
+      index: number,
+      ...
+    },
     renderItem?: ?RenderItemType<Item>,
     ListItemComponent?: ?(React.ComponentType<any> | React.Element<any>),
+    ...
   },
   prevCellKey: ?string,
+  ...
 };
 
 type CellRendererState = {
@@ -1847,6 +1904,7 @@ type CellRendererState = {
     highlighted: boolean,
     leadingItem: ?Item,
   |}>,
+  ...
 };
 
 class CellRenderer extends React.Component<
@@ -2017,6 +2075,7 @@ class CellRenderer extends React.Component<
 class VirtualizedCellWrapper extends React.Component<{
   cellKey: string,
   children: React.Node,
+  ...
 }> {
   static childContextTypes = {
     virtualizedCell: PropTypes.shape({
diff --git a/Libraries/Lists/VirtualizedSectionList.js b/Libraries/Lists/VirtualizedSectionList.js
index 83d078b1938..53eb54be609 100644
--- a/Libraries/Lists/VirtualizedSectionList.js
+++ b/Libraries/Lists/VirtualizedSectionList.js
@@ -30,7 +30,6 @@ export type SectionBase<SectionItemT> = {
    * the array index will be used by default.
    */
   key?: string,
-
   // Optional props will override list-wide props just for this section.
   renderItem?: ?(info: {
     item: SectionItemT,
@@ -40,10 +39,13 @@ export type SectionBase<SectionItemT> = {
       highlight: () => void,
       unhighlight: () => void,
       updateProps: (select: 'leading' | 'trailing', newProps: Object) => void,
+      ...
     },
+    ...
   }) => null | React.Element<any>,
   ItemSeparatorComponent?: ?React.ComponentType<any>,
   keyExtractor?: (item: SectionItemT, index?: ?number) => string,
+  ...
 };
 
 type RequiredProps<SectionT: SectionBase<any>> = {|
@@ -62,7 +64,9 @@ type OptionalProps<SectionT: SectionBase<any>> = {|
       highlight: () => void,
       unhighlight: () => void,
       updateProps: (select: 'leading' | 'trailing', newProps: Object) => void,
+      ...
     },
+    ...
   }) => null | React.Element<any>,
   /**
    * Rendered at the top of each section. These stick to the top of the `ScrollView` by default on
@@ -70,12 +74,14 @@ type OptionalProps<SectionT: SectionBase<any>> = {|
    */
   renderSectionHeader?: ?(info: {
     section: SectionT,
+    ...
   }) => null | React.Element<any>,
   /**
    * Rendered at the bottom of each section.
    */
   renderSectionFooter?: ?(info: {
     section: SectionT,
+    ...
   }) => null | React.Element<any>,
   /**
    * Rendered at the top and bottom of each section (note this is different from
@@ -90,7 +96,7 @@ type OptionalProps<SectionT: SectionBase<any>> = {|
    * enabled by default on iOS because that is the platform standard there.
    */
   stickySectionHeadersEnabled?: boolean,
-  onEndReached?: ?({distanceFromEnd: number}) => void,
+  onEndReached?: ?({distanceFromEnd: number, ...}) => void,
 |};
 
 type VirtualizedListProps = React.ElementProps<typeof VirtualizedList>;
@@ -100,9 +106,7 @@ export type Props<SectionT> = {|
   ...OptionalProps<SectionT>,
   ...$Diff<
     VirtualizedListProps,
-    {
-      renderItem: $PropertyType<VirtualizedListProps, 'renderItem'>,
-    },
+    {renderItem: $PropertyType<VirtualizedListProps, 'renderItem'>, ...},
   >,
 |};
 export type ScrollToLocationParamsType = {|
@@ -118,7 +122,7 @@ type DefaultProps = {|
   data: $ReadOnlyArray<Item>,
 |};
 
-type State = {childProps: VirtualizedListProps};
+type State = {childProps: VirtualizedListProps, ...};
 
 /**
  * Right now this just flattens everything into one list and uses VirtualizedList under the
@@ -250,13 +254,17 @@ class VirtualizedSectionList<
     index: number,
   ): ?{
     section: SectionT,
-    key: string, // Key of the section or combined key for section + item
-    index: ?number, // Relative index within the section
-    header?: ?boolean, // True if this is the section header
+    // Key of the section or combined key for section + item
+    key: string,
+    // Relative index within the section
+    index: ?number,
+    // True if this is the section header
+    header?: ?boolean,
     leadingItem?: ?Item,
     leadingSection?: ?SectionT,
     trailingItem?: ?Item,
     trailingSection?: ?SectionT,
+    ...
   } {
     let itemIndex = index;
     const {getItem, getItemCount, keyExtractor, sections} = this.props;
@@ -323,6 +331,7 @@ class VirtualizedSectionList<
   }: {
     viewableItems: Array<ViewToken>,
     changed: Array<ViewToken>,
+    ...
   }) => {
     const onViewableItemsChanged = this.props.onViewableItemsChanged;
     if (onViewableItemsChanged != null) {
@@ -335,7 +344,7 @@ class VirtualizedSectionList<
     }
   };
 
-  _renderItem = ({item, index}: {item: Item, index: number}) => {
+  _renderItem = ({item, index}: {item: Item, index: number, ...}) => {
     const info = this._subExtractor(index);
     if (!info) {
       return null;
@@ -448,6 +457,7 @@ type ItemWithSeparatorState = {
     highlighted: false,
     ...ItemWithSeparatorCommonProps,
   |}>,
+  ...
 };
 
 class ItemWithSeparator extends React.Component<
diff --git a/Libraries/LogBox/Data/parseLogBoxLog.js b/Libraries/LogBox/Data/parseLogBoxLog.js
index 96e0a219cf4..095ad59199d 100644
--- a/Libraries/LogBox/Data/parseLogBoxLog.js
+++ b/Libraries/LogBox/Data/parseLogBoxLog.js
@@ -15,13 +15,17 @@ import stringifySafe from '../../Utilities/stringifySafe';
 import type {ExceptionData} from '../../Core/NativeExceptionsManager';
 import type {LogBoxLogData} from './LogBoxLog';
 
-export type ExtendedExceptionData = ExceptionData & {isComponentError: boolean};
+export type ExtendedExceptionData = ExceptionData & {
+  isComponentError: boolean,
+  ...
+};
 export type Category = string;
 export type CodeFrame = $ReadOnly<{|
   content: string,
   location: {
     row: number,
     column: number,
+    ...
   },
   fileName: string,
 |}>;
diff --git a/Libraries/LogBox/LogBox.js b/Libraries/LogBox/LogBox.js
index 0a56ddb4f93..fb5ec6bc27e 100644
--- a/Libraries/LogBox/LogBox.js
+++ b/Libraries/LogBox/LogBox.js
@@ -257,4 +257,5 @@ module.exports = (LogBoxComponent: Class<React.Component<Props, State>> & {
   ignoreLogs($ReadOnlyArray<IgnorePattern>): void,
   install(): void,
   uninstall(): void,
+  ...
 });
diff --git a/Libraries/LogBox/UI/LogBoxMessage.js b/Libraries/LogBox/UI/LogBoxMessage.js
index 2f467b5673c..8bd2740a2ea 100644
--- a/Libraries/LogBox/UI/LogBoxMessage.js
+++ b/Libraries/LogBox/UI/LogBoxMessage.js
@@ -21,6 +21,7 @@ type Props = {
   style: TextStyleProp,
   plaintext?: ?boolean,
   maxLength?: ?number,
+  ...
 };
 
 const cleanContent = content => content.replace(/(Warning|Error): /g, '');
diff --git a/Libraries/Network/FormData.js b/Libraries/Network/FormData.js
index ff618c0180a..bdb1da311da 100644
--- a/Libraries/Network/FormData.js
+++ b/Libraries/Network/FormData.js
@@ -13,17 +13,19 @@
 type FormDataValue = any;
 type FormDataNameValuePair = [string, FormDataValue];
 
-type Headers = {[name: string]: string};
+type Headers = {[name: string]: string, ...};
 type FormDataPart =
   | {
       string: string,
       headers: Headers,
+      ...
     }
   | {
       uri: string,
       headers: Headers,
       name?: string,
       type?: string,
+      ...
     };
 
 /**
diff --git a/Libraries/Network/XMLHttpRequest.js b/Libraries/Network/XMLHttpRequest.js
index 14e06222b68..e25e876e814 100644
--- a/Libraries/Network/XMLHttpRequest.js
+++ b/Libraries/Network/XMLHttpRequest.js
@@ -39,6 +39,7 @@ type XHRInterceptor = {
   dataReceived(id: number, data: string): void,
   loadingFinished(id: number, encodedDataLength: number): void,
   loadingFailed(id: number, error: string): void,
+  ...
 };
 
 // The native blob module is optional so inject it here if available.
diff --git a/Libraries/Network/convertRequestBody.js b/Libraries/Network/convertRequestBody.js
index 820fec0642b..0db3ed70977 100644
--- a/Libraries/Network/convertRequestBody.js
+++ b/Libraries/Network/convertRequestBody.js
@@ -19,7 +19,7 @@ export type RequestBody =
   | string
   | Blob
   | FormData
-  | {uri: string}
+  | {uri: string, ...}
   | ArrayBuffer
   | $ArrayBufferView;
 
diff --git a/Libraries/Performance/PureComponentDebug.js b/Libraries/Performance/PureComponentDebug.js
index 9932b5fd4e8..982ed49353c 100644
--- a/Libraries/Performance/PureComponentDebug.js
+++ b/Libraries/Performance/PureComponentDebug.js
@@ -12,7 +12,7 @@
 
 const React = require('react');
 
-opaque type DoNotCommitUsageOfPureComponentDebug = {};
+opaque type DoNotCommitUsageOfPureComponentDebug = {...};
 
 /**
  * Identifies which prop or state changes triggered a re-render of a PureComponent. Usage:
diff --git a/Libraries/PermissionsAndroid/NativePermissionsAndroid.js b/Libraries/PermissionsAndroid/NativePermissionsAndroid.js
index 843c0aeaa98..14aba8f1116 100644
--- a/Libraries/PermissionsAndroid/NativePermissionsAndroid.js
+++ b/Libraries/PermissionsAndroid/NativePermissionsAndroid.js
@@ -54,7 +54,7 @@ export interface Spec extends TurboModule {
   ) => Promise<boolean>;
   +requestMultiplePermissions: (
     permissions: Array<PermissionType>,
-  ) => Promise<{[permission: PermissionType]: PermissionStatus}>;
+  ) => Promise<{[permission: PermissionType]: PermissionStatus, ...}>;
 }
 
 export default (TurboModuleRegistry.get<Spec>('PermissionsAndroid'): ?Spec);
diff --git a/Libraries/PermissionsAndroid/PermissionsAndroid.js b/Libraries/PermissionsAndroid/PermissionsAndroid.js
index 29c744181b8..d0ded058035 100644
--- a/Libraries/PermissionsAndroid/PermissionsAndroid.js
+++ b/Libraries/PermissionsAndroid/PermissionsAndroid.js
@@ -26,6 +26,7 @@ export type Rationale = {
   buttonPositive?: string,
   buttonNegative?: string,
   buttonNeutral?: string,
+  ...
 };
 
 const PERMISSION_REQUEST_RESULT = Object.freeze({
@@ -239,7 +240,7 @@ class PermissionsAndroid {
    */
   requestMultiple(
     permissions: Array<PermissionType>,
-  ): Promise<{[permission: PermissionType]: PermissionStatus}> {
+  ): Promise<{[permission: PermissionType]: PermissionStatus, ...}> {
     if (Platform.OS !== 'android') {
       console.warn(
         '"PermissionsAndroid" module works only for Android platform.',
diff --git a/Libraries/PushNotificationIOS/NativePushNotificationManagerIOS.js b/Libraries/PushNotificationIOS/NativePushNotificationManagerIOS.js
index 3ff1b129841..2e2044262ee 100644
--- a/Libraries/PushNotificationIOS/NativePushNotificationManagerIOS.js
+++ b/Libraries/PushNotificationIOS/NativePushNotificationManagerIOS.js
@@ -32,7 +32,7 @@ type Notification = {|
 |};
 
 export interface Spec extends TurboModule {
-  +getConstants: () => {};
+  +getConstants: () => {...};
   +onFinishRemoteNotification: (
     notificationId: string,
     /**
diff --git a/Libraries/PushNotificationIOS/PushNotificationIOS.js b/Libraries/PushNotificationIOS/PushNotificationIOS.js
index 43548d4a7aa..66c5c541675 100644
--- a/Libraries/PushNotificationIOS/PushNotificationIOS.js
+++ b/Libraries/PushNotificationIOS/PushNotificationIOS.js
@@ -31,6 +31,7 @@ export type FetchResult = {
   NewData: string,
   NoData: string,
   ResultFailed: string,
+  ...
 };
 
 /**
@@ -58,6 +59,7 @@ export type PushNotificationEventName = $Keys<{
    * handler will be invoked with {message: string, code: number, details: any}.
    */
   registrationError: string,
+  ...
 }>;
 
 /**
@@ -301,10 +303,12 @@ class PushNotificationIOS {
     alert?: boolean,
     badge?: boolean,
     sound?: boolean,
+    ...
   }): Promise<{
     alert: boolean,
     badge: boolean,
     sound: boolean,
+    ...
   }> {
     let requestedPermissions = {
       alert: true,
diff --git a/Libraries/ReactNative/AppContainer.js b/Libraries/ReactNative/AppContainer.js
index 388fbba8542..a5ae75d822a 100644
--- a/Libraries/ReactNative/AppContainer.js
+++ b/Libraries/ReactNative/AppContainer.js
@@ -19,9 +19,7 @@ const RootTagContext = require('./RootTagContext');
 const StyleSheet = require('../StyleSheet/StyleSheet');
 const View = require('../Components/View/View');
 
-type Context = {
-  rootTag: number,
-};
+type Context = {rootTag: number, ...};
 
 type Props = $ReadOnly<{|
   children?: React.Node,
diff --git a/Libraries/ReactNative/AppRegistry.js b/Libraries/ReactNative/AppRegistry.js
index e5bc300feb5..ca553cbd0c3 100644
--- a/Libraries/ReactNative/AppRegistry.js
+++ b/Libraries/ReactNative/AppRegistry.js
@@ -39,17 +39,18 @@ export type AppConfig = {
   component?: ComponentProvider,
   run?: Function,
   section?: boolean,
+  ...
 };
 export type Runnable = {
   component?: ComponentProvider,
   run: Function,
+  ...
 };
-export type Runnables = {
-  [appKey: string]: Runnable,
-};
+export type Runnables = {[appKey: string]: Runnable, ...};
 export type Registry = {
   sections: Array<string>,
   runnables: Runnables,
+  ...
 };
 export type WrapperComponentProvider = any => React$ComponentType<*>;
 
diff --git a/Libraries/ReactNative/FabricUIManager.js b/Libraries/ReactNative/FabricUIManager.js
index e631a9af251..7424d51d45b 100644
--- a/Libraries/ReactNative/FabricUIManager.js
+++ b/Libraries/ReactNative/FabricUIManager.js
@@ -17,10 +17,10 @@ import type {
 } from '../Renderer/shims/ReactNativeTypes';
 
 // TODO: type these properly.
-type Node = {};
+type Node = {...};
 type NodeSet = Array<Node>;
-type NodeProps = {};
-type InstanceHandle = {};
+type NodeProps = {...};
+type InstanceHandle = {...};
 type Spec = {|
   +createNode: (
     reactTag: number,
diff --git a/Libraries/Renderer/shims/ReactNativeTypes.js b/Libraries/Renderer/shims/ReactNativeTypes.js
index 7aa6c59a67b..cf20ce938c2 100644
--- a/Libraries/Renderer/shims/ReactNativeTypes.js
+++ b/Libraries/Renderer/shims/ReactNativeTypes.js
@@ -45,9 +45,8 @@ export type AttributeConfiguration<
   TStyleProps = string,
 > = $ReadOnly<{
   [propName: TProps]: AttributeType,
-  style: $ReadOnly<{
-    [propName: TStyleProps]: AttributeType,
-  }>,
+  style: $ReadOnly<{[propName: TStyleProps]: AttributeType, ...}>,
+  ...
 }>;
 
 export type ReactNativeBaseComponentViewConfig<
@@ -62,18 +61,16 @@ export type ReactNativeBaseComponentViewConfig<
         bubbled: string,
       |}>,
     |}>,
+    ...,
   }>,
-  Commands?: $ReadOnly<{
-    [commandName: string]: number,
-  }>,
+  Commands?: $ReadOnly<{[commandName: string]: number, ...}>,
   directEventTypes?: $ReadOnly<{
     [eventName: string]: $ReadOnly<{|
       registrationName: string,
     |}>,
+    ...,
   }>,
-  NativeProps?: $ReadOnly<{
-    [propName: string]: string,
-  }>,
+  NativeProps?: $ReadOnly<{[propName: string]: string, ...}>,
   uiViewClassName: string,
   validAttributes: AttributeConfiguration<TProps, TStyleProps>,
 |}>;
@@ -116,6 +113,7 @@ export type NativeMethods = {
     onFail?: () => void,
   ): void,
   setNativeProps(nativeProps: Object): void,
+  ...
 };
 
 export type NativeMethodsMixinType = NativeMethods;
@@ -126,10 +124,12 @@ type SecretInternalsType = {
   computeComponentStackForErrorReporting(tag: number): string,
   // TODO (bvaughn) Decide which additional types to expose here?
   // And how much information to fill in for the above types.
+  ...
 };
 
 type SecretInternalsFabricType = {
   NativeMethodsMixin: NativeMethodsMixinType,
+  ...
 };
 
 /**
@@ -150,9 +150,10 @@ export type ReactNativeType = {
   ): any,
   unmountComponentAtNode(containerTag: number): any,
   unmountComponentAtNodeAndRemoveContainer(containerTag: number): any,
-  unstable_batchedUpdates: any, // TODO (bvaughn) Add types
-
+  // TODO (bvaughn) Add types
+  unstable_batchedUpdates: any,
   __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: SecretInternalsType,
+  ...
 };
 
 export type ReactFabricType = {
@@ -167,6 +168,7 @@ export type ReactFabricType = {
   ): any,
   unmountComponentAtNode(containerTag: number): any,
   __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: SecretInternalsFabricType,
+  ...
 };
 
 export type ReactNativeEventTarget = {
@@ -176,7 +178,9 @@ export type ReactNativeEventTarget = {
     viewConfig: ReactNativeBaseComponentViewConfig<>,
     currentProps: Object,
     _internalInstanceHandle: Object,
+    ...
   },
+  ...
 };
 
 export type ReactFaricEventTouch = {
@@ -190,6 +194,7 @@ export type ReactFaricEventTouch = {
   target: number,
   timestamp: number,
   force: number,
+  ...
 };
 
 export type ReactFaricEvent = {
@@ -197,12 +202,14 @@ export type ReactFaricEvent = {
   changedTouches: Array<ReactFaricEventTouch>,
   targetTouches: Array<ReactFaricEventTouch>,
   target: number,
+  ...
 };
 
 export type ReactNativeResponderEvent = {
   nativeEvent: ReactFaricEvent,
   target: null | ReactNativeEventTarget,
   type: string,
+  ...
 };
 
 export type ReactNativeResponderContext = {
@@ -222,12 +229,14 @@ export type ReactNativeResponderContext = {
       right: number,
       top: number,
       bottom: number,
+      ...
     }) => void,
   ): void,
   addRootEventTypes: (rootEventTypes: Array<string>) => void,
   removeRootEventTypes: (rootEventTypes: Array<string>) => void,
   getTimeStamp: () => number,
   getResponderNode(): ReactNativeEventTarget | null,
+  ...
 };
 
 export type PointerType =
diff --git a/Libraries/Renderer/shims/ReactNativeViewConfigRegistry.js b/Libraries/Renderer/shims/ReactNativeViewConfigRegistry.js
index 4653e2db9be..e6e3b13b8e8 100644
--- a/Libraries/Renderer/shims/ReactNativeViewConfigRegistry.js
+++ b/Libraries/Renderer/shims/ReactNativeViewConfigRegistry.js
@@ -27,11 +27,13 @@ const customBubblingEventTypes: {
       bubbled: string,
     |}>,
   |}>,
+  ...,
 } = {};
 const customDirectEventTypes: {
   [eventName: string]: $ReadOnly<{|
     registrationName: string,
   |}>,
+  ...,
 } = {};
 
 exports.customBubblingEventTypes = customBubblingEventTypes;
diff --git a/Libraries/Renderer/shims/ReactTypes.js b/Libraries/Renderer/shims/ReactTypes.js
index d24e23a55a0..e97e5823393 100644
--- a/Libraries/Renderer/shims/ReactTypes.js
+++ b/Libraries/Renderer/shims/ReactTypes.js
@@ -31,12 +31,15 @@ export type ReactProvider<T> = {
   props: {
     value: T,
     children?: ReactNodeList,
+    ...
   },
+  ...
 };
 
 export type ReactProviderType<T> = {
   $$typeof: Symbol | number,
   _context: ReactContext<T>,
+  ...
 };
 
 export type ReactConsumer<T> = {
@@ -47,23 +50,23 @@ export type ReactConsumer<T> = {
   props: {
     children: (value: T) => ReactNodeList,
     unstable_observedBits?: number,
+    ...
   },
+  ...
 };
 
 export type ReactContext<T> = {
   $$typeof: Symbol | number,
   Consumer: ReactContext<T>,
   Provider: ReactProviderType<T>,
-
   _calculateChangedBits: ((a: T, b: T) => number) | null,
-
   _currentValue: T,
   _currentValue2: T,
   _threadCount: number,
-
   // DEV only
   _currentRenderer?: Object | null,
   _currentRenderer2?: Object | null,
+  ...
 };
 
 export type ReactPortal = {
@@ -73,6 +76,7 @@ export type ReactPortal = {
   children: ReactNodeList,
   // TODO: figure out the API for cross-renderer implementation.
   implementation: any,
+  ...
 };
 
 export type RefObject = {|
@@ -107,6 +111,7 @@ export type ReactEventResponder<E, C> = {
     | ((event: E, context: C, props: Object, state: Object) => void),
   onMount: null | ((context: C, props: Object, state: Object) => void),
   onUnmount: null | ((context: C, props: Object, state: Object) => void),
+  ...
 };
 
 export type EventPriority = 0 | 1 | 2;
@@ -153,6 +158,7 @@ export type ReactFundamentalImpl<C, H> = {
   ) => void,
   onHydrate?: (context: C, props: Object, state: Object) => boolean,
   onFocus?: (context: C, props: Object, state: Object) => boolean,
+  ...
 };
 
 export type ReactFundamentalComponent<C, H> = {|
diff --git a/Libraries/Settings/Settings.ios.js b/Libraries/Settings/Settings.ios.js
index 55d8ff0481d..cba39734037 100644
--- a/Libraries/Settings/Settings.ios.js
+++ b/Libraries/Settings/Settings.ios.js
@@ -16,7 +16,11 @@ const invariant = require('invariant');
 
 import NativeSettingsManager from './NativeSettingsManager';
 
-const subscriptions: Array<{keys: Array<string>, callback: ?Function}> = [];
+const subscriptions: Array<{
+  keys: Array<string>,
+  callback: ?Function,
+  ...
+}> = [];
 
 const Settings = {
   _settings: (NativeSettingsManager &&
diff --git a/Libraries/Share/Share.js b/Libraries/Share/Share.js
index 1b064db277f..8d46c5eb1f6 100644
--- a/Libraries/Share/Share.js
+++ b/Libraries/Share/Share.js
@@ -19,13 +19,22 @@ import NativeActionSheetManager from '../ActionSheetIOS/NativeActionSheetManager
 import NativeShareModule from './NativeShareModule';
 
 type Content =
-  | {title?: string, message: string}
-  | {title?: string, url: string};
+  | {
+      title?: string,
+      message: string,
+      ...
+    }
+  | {
+      title?: string,
+      url: string,
+      ...
+    };
 type Options = {
   dialogTitle?: string,
   excludedActivityTypes?: Array<string>,
   tintColor?: string,
   subject?: string,
+  ...
 };
 
 class Share {
diff --git a/Libraries/StyleSheet/PointPropType.js b/Libraries/StyleSheet/PointPropType.js
index 302892edae3..9fd9789a4ad 100644
--- a/Libraries/StyleSheet/PointPropType.js
+++ b/Libraries/StyleSheet/PointPropType.js
@@ -13,4 +13,5 @@
 export type PointProp = $ReadOnly<{
   x: number,
   y: number,
+  ...
 }>;
diff --git a/Libraries/StyleSheet/StyleSheetTypes.js b/Libraries/StyleSheet/StyleSheetTypes.js
index bda8397b4bf..7d5d2f59afa 100644
--- a/Libraries/StyleSheet/StyleSheetTypes.js
+++ b/Libraries/StyleSheet/StyleSheetTypes.js
@@ -643,6 +643,7 @@ export type ____DangerouslyImpreciseStyle_Internal = {
   +resizeMode?: 'contain' | 'cover' | 'stretch' | 'center' | 'repeat',
   +tintColor?: ColorValue,
   +overlayColor?: string,
+  ...
 };
 
 type GenericStyleProp<+T> =
@@ -668,4 +669,5 @@ export type ____ImageStyleProp_Internal = GenericStyleProp<
 
 export type ____Styles_Internal = {
   +[key: string]: $Shape<____DangerouslyImpreciseStyle_Internal>,
+  ...,
 };
diff --git a/Libraries/StyleSheet/splitLayoutProps.js b/Libraries/StyleSheet/splitLayoutProps.js
index ab4197cc45e..953b3e55f46 100644
--- a/Libraries/StyleSheet/splitLayoutProps.js
+++ b/Libraries/StyleSheet/splitLayoutProps.js
@@ -44,6 +44,7 @@ function splitLayoutProps(
 ): {
   outer: DangerouslyImpreciseStyle,
   inner: DangerouslyImpreciseStyle,
+  ...
 } {
   const inner = {};
   const outer = {};
diff --git a/Libraries/TurboModule/RCTExport.js b/Libraries/TurboModule/RCTExport.js
index 9e8a884d2b7..a0fc78fc96c 100644
--- a/Libraries/TurboModule/RCTExport.js
+++ b/Libraries/TurboModule/RCTExport.js
@@ -30,7 +30,7 @@
 
 // eslint-disable-next-line no-unused-vars
 export interface DEPRECATED_RCTExport<T: void = void> {
-  +getConstants?: () => {};
+  +getConstants?: () => {...};
 }
 
 // eslint-disable-next-line lint/react-native-modules
diff --git a/Libraries/Utilities/BackHandler.android.js b/Libraries/Utilities/BackHandler.android.js
index 6ddc3eea078..e6e3d035295 100644
--- a/Libraries/Utilities/BackHandler.android.js
+++ b/Libraries/Utilities/BackHandler.android.js
@@ -64,7 +64,7 @@ type TBackHandler = {|
   +addEventListener: (
     eventName: BackPressEventName,
     handler: Function,
-  ) => {remove: () => void},
+  ) => {remove: () => void, ...},
   +removeEventListener: (
     eventName: BackPressEventName,
     handler: Function,
@@ -88,7 +88,7 @@ const BackHandler: TBackHandler = {
   addEventListener: function(
     eventName: BackPressEventName,
     handler: Function,
-  ): {remove: () => void} {
+  ): {remove: () => void, ...} {
     if (_backPressSubscriptions.indexOf(handler) === -1) {
       _backPressSubscriptions.push(handler);
     }
diff --git a/Libraries/Utilities/BackHandler.ios.js b/Libraries/Utilities/BackHandler.ios.js
index e4a49652a66..ff2f1c862e5 100644
--- a/Libraries/Utilities/BackHandler.ios.js
+++ b/Libraries/Utilities/BackHandler.ios.js
@@ -55,7 +55,7 @@ type TBackHandler = {|
   +addEventListener: (
     eventName: BackPressEventName,
     handler: Function,
-  ) => {remove: () => void},
+  ) => {remove: () => void, ...},
   +removeEventListener: (
     eventName: BackPressEventName,
     handler: Function,
@@ -94,7 +94,7 @@ if (Platform.isTV) {
     addEventListener: function(
       eventName: BackPressEventName,
       handler: Function,
-    ): {remove: () => void} {
+    ): {remove: () => void, ...} {
       _backPressSubscriptions.add(handler);
       return {
         remove: () => BackHandler.removeEventListener(eventName, handler),
diff --git a/Libraries/Utilities/Dimensions.js b/Libraries/Utilities/Dimensions.js
index 4a07a7f38c3..3cc28bc0ff6 100644
--- a/Libraries/Utilities/Dimensions.js
+++ b/Libraries/Utilities/Dimensions.js
@@ -18,7 +18,11 @@ import NativeDeviceInfo, {
 } from './NativeDeviceInfo';
 import invariant from 'invariant';
 
-type DimensionsValue = {window?: DisplayMetrics, screen?: DisplayMetrics};
+type DimensionsValue = {
+  window?: DisplayMetrics,
+  screen?: DisplayMetrics,
+  ...
+};
 
 const eventEmitter = new EventEmitter();
 let dimensionsInitialized = false;
@@ -53,7 +57,7 @@ class Dimensions {
    *
    * @param {object} dims Simple string-keyed object of dimensions to set
    */
-  static set(dims: $ReadOnly<{[key: string]: any}>): void {
+  static set(dims: $ReadOnly<{[key: string]: any, ...}>): void {
     // We calculate the window dimensions in JS so that we don't encounter loss of
     // precision in transferring the dimensions (which could be non-integers) over
     // the bridge.
@@ -118,7 +122,7 @@ class Dimensions {
   }
 }
 
-let initialDims: ?$ReadOnly<{[key: string]: any}> =
+let initialDims: ?$ReadOnly<{[key: string]: any, ...}> =
   global.nativeExtensions &&
   global.nativeExtensions.DeviceInfo &&
   global.nativeExtensions.DeviceInfo.Dimensions;
diff --git a/Libraries/Utilities/Platform.android.js b/Libraries/Utilities/Platform.android.js
index 4a4de286938..13b0586701e 100644
--- a/Libraries/Utilities/Platform.android.js
+++ b/Libraries/Utilities/Platform.android.js
@@ -16,6 +16,7 @@ export type PlatformSelectSpec<A, N, D> = {
   android?: A,
   native?: N,
   default?: D,
+  ...
 };
 
 const Platform = {
diff --git a/Libraries/Utilities/Platform.ios.js b/Libraries/Utilities/Platform.ios.js
index ed933099e6e..2b8afec73e4 100644
--- a/Libraries/Utilities/Platform.ios.js
+++ b/Libraries/Utilities/Platform.ios.js
@@ -16,6 +16,7 @@ export type PlatformSelectSpec<D, N, I> = {
   default?: D,
   native?: N,
   ios?: I,
+  ...
 };
 
 const Platform = {
diff --git a/Libraries/Utilities/ReactNativeTestTools.js b/Libraries/Utilities/ReactNativeTestTools.js
index 89ca1e1ef30..14250ad9329 100644
--- a/Libraries/Utilities/ReactNativeTestTools.js
+++ b/Libraries/Utilities/ReactNativeTestTools.js
@@ -64,7 +64,7 @@ function enter(instance: ReactTestInstance, text: string) {
 
 // Returns null if there is no error, otherwise returns an error message string.
 function maximumDepthError(
-  tree: {toJSON: () => ReactTestRendererNode},
+  tree: {toJSON: () => ReactTestRendererNode, ...},
   maxDepthLimit: number,
 ): ?string {
   const maxDepth = maximumDepthOfJSON(tree.toJSON());
diff --git a/Libraries/Utilities/SceneTracker.js b/Libraries/Utilities/SceneTracker.js
index 266494913dc..ff3bbe07c62 100644
--- a/Libraries/Utilities/SceneTracker.js
+++ b/Libraries/Utilities/SceneTracker.js
@@ -10,7 +10,7 @@
 
 'use strict';
 
-type Scene = {name: string};
+type Scene = {name: string, ...};
 
 let _listeners: Array<(scene: Scene) => void> = [];
 
@@ -28,7 +28,7 @@ const SceneTracker = {
 
   addActiveSceneChangedListener(
     callback: (scene: Scene) => void,
-  ): {remove: () => void} {
+  ): {remove: () => void, ...} {
     _listeners.push(callback);
     return {
       remove: () => {
diff --git a/Libraries/Utilities/codegenNativeCommands.js b/Libraries/Utilities/codegenNativeCommands.js
index 1cee4d918af..1a7532cfddc 100644
--- a/Libraries/Utilities/codegenNativeCommands.js
+++ b/Libraries/Utilities/codegenNativeCommands.js
@@ -16,7 +16,7 @@ type Options<T = string> = $ReadOnly<{|
   supportedCommands: $ReadOnlyArray<T>,
 |}>;
 
-function codegenNativeCommands<T: {}>(options: Options<$Keys<T>>): T {
+function codegenNativeCommands<T: {...}>(options: Options<$Keys<T>>): T {
   const commandObj = {};
 
   options.supportedCommands.forEach(command => {
diff --git a/Libraries/Utilities/createPerformanceLogger.js b/Libraries/Utilities/createPerformanceLogger.js
index c9102b31426..fdd5ca9e3cf 100644
--- a/Libraries/Utilities/createPerformanceLogger.js
+++ b/Libraries/Utilities/createPerformanceLogger.js
@@ -23,6 +23,7 @@ type Timespan = {
   totalTime?: number,
   startTime?: number,
   endTime?: number,
+  ...
 };
 
 export type IPerformanceLogger = {
@@ -33,21 +34,22 @@ export type IPerformanceLogger = {
   clearCompleted(): void,
   clearExceptTimespans(Array<string>): void,
   currentTimestamp(): number,
-  getTimespans(): {[key: string]: Timespan},
+  getTimespans(): {[key: string]: Timespan, ...},
   hasTimespan(string): boolean,
   logTimespans(): void,
   addTimespans(Array<number>, Array<string>): void,
   setExtra(string, any): void,
-  getExtras(): {[key: string]: any},
+  getExtras(): {[key: string]: any, ...},
   removeExtra(string): ?any,
   logExtras(): void,
   markPoint(string, number | void): void,
-  getPoints(): {[key: string]: number},
+  getPoints(): {[key: string]: number, ...},
   logPoints(): void,
   logEverything(): void,
+  ...
 };
 
-const _cookies: {[key: string]: number} = {};
+const _cookies: {[key: string]: number, ...} = {};
 
 const PRINT_TO_CONSOLE: false = false; // Type as false to prevent accidentally committing `true`;
 
@@ -58,9 +60,10 @@ const PRINT_TO_CONSOLE: false = false; // Type as false to prevent accidentally
  */
 function createPerformanceLogger(): IPerformanceLogger {
   const result: IPerformanceLogger & {
-    _timespans: {[key: string]: Timespan},
-    _extras: {[key: string]: any},
-    _points: {[key: string]: number},
+    _timespans: {[key: string]: Timespan, ...},
+    _extras: {[key: string]: any, ...},
+    _points: {[key: string]: number, ...},
+    ...
   } = {
     _timespans: {},
     _extras: {},
diff --git a/Libraries/Utilities/defineLazyObjectProperty.js b/Libraries/Utilities/defineLazyObjectProperty.js
index 23aee34d999..9c5698a7036 100644
--- a/Libraries/Utilities/defineLazyObjectProperty.js
+++ b/Libraries/Utilities/defineLazyObjectProperty.js
@@ -20,6 +20,7 @@ function defineLazyObjectProperty<T>(
     get: () => T,
     enumerable?: boolean,
     writable?: boolean,
+    ...
   },
 ): void {
   const {get} = descriptor;
diff --git a/Libraries/Utilities/differ/insetsDiffer.js b/Libraries/Utilities/differ/insetsDiffer.js
index 53c9d9605c4..48aa7cac3c8 100644
--- a/Libraries/Utilities/differ/insetsDiffer.js
+++ b/Libraries/Utilities/differ/insetsDiffer.js
@@ -15,6 +15,7 @@ type Inset = {
   left: ?number,
   right: ?number,
   bottom: ?number,
+  ...
 };
 
 const dummyInsets = {
diff --git a/Libraries/Utilities/differ/pointsDiffer.js b/Libraries/Utilities/differ/pointsDiffer.js
index 96fb189d43e..28d94a3b706 100644
--- a/Libraries/Utilities/differ/pointsDiffer.js
+++ b/Libraries/Utilities/differ/pointsDiffer.js
@@ -13,6 +13,7 @@
 type Point = {
   x: ?number,
   y: ?number,
+  ...
 };
 
 const dummyPoint = {x: undefined, y: undefined};
diff --git a/Libraries/Utilities/registerGeneratedViewConfig.js b/Libraries/Utilities/registerGeneratedViewConfig.js
index 8164fede07f..7ce2c2f01f3 100644
--- a/Libraries/Utilities/registerGeneratedViewConfig.js
+++ b/Libraries/Utilities/registerGeneratedViewConfig.js
@@ -23,11 +23,13 @@ export type GeneratedViewConfig = {
         bubbled: string,
       |}>,
     |}>,
+    ...,
   }>,
   directEventTypes?: $ReadOnly<{
     [eventName: string]: $ReadOnly<{|
       registrationName: string,
     |}>,
+    ...,
   }>,
   validAttributes?: {
     [propName: string]:
@@ -36,7 +38,9 @@ export type GeneratedViewConfig = {
           diff?: <T>(arg1: any, arg2: any) => boolean,
           process?: (arg1: any) => any,
         |}>,
+    ...,
   },
+  ...
 };
 
 function registerGeneratedViewConfig(
diff --git a/Libraries/Utilities/truncate.js b/Libraries/Utilities/truncate.js
index b892f0d66d4..fb3814b4a5a 100644
--- a/Libraries/Utilities/truncate.js
+++ b/Libraries/Utilities/truncate.js
@@ -14,6 +14,7 @@ type truncateOptions = {
   breakOnWords: boolean,
   minDelta: number,
   elipsis: string,
+  ...
 };
 
 const defaultOptions = {
diff --git a/Libraries/Utilities/warnOnce.js b/Libraries/Utilities/warnOnce.js
index 8f7350444f1..225a2e4dfd8 100644
--- a/Libraries/Utilities/warnOnce.js
+++ b/Libraries/Utilities/warnOnce.js
@@ -12,7 +12,7 @@
 
 const warning = require('fbjs/lib/warning');
 
-const warnedKeys: {[string]: boolean} = {};
+const warnedKeys: {[string]: boolean, ...} = {};
 
 /**
  * A simple function that prints a warning message once per session.
diff --git a/Libraries/WebSocket/WebSocket.js b/Libraries/WebSocket/WebSocket.js
index 35f0757b4dc..a1679bd50ac 100644
--- a/Libraries/WebSocket/WebSocket.js
+++ b/Libraries/WebSocket/WebSocket.js
@@ -85,7 +85,7 @@ class WebSocket extends (EventTarget(...WEBSOCKET_EVENTS): any) {
   constructor(
     url: string,
     protocols: ?string | ?Array<string>,
-    options: ?{headers?: {origin?: string}},
+    options: ?{headers?: {origin?: string, ...}, ...},
   ) {
     super();
     if (typeof protocols === 'string') {
diff --git a/Libraries/YellowBox/Data/YellowBoxRegistry.js b/Libraries/YellowBox/Data/YellowBoxRegistry.js
index 1ecbb700ae0..95763ab0c7c 100644
--- a/Libraries/YellowBox/Data/YellowBoxRegistry.js
+++ b/Libraries/YellowBox/Data/YellowBoxRegistry.js
@@ -24,7 +24,7 @@ export type Subscription = $ReadOnly<{|
   unsubscribe: () => void,
 |}>;
 
-const observers: Set<{observer: Observer}> = new Set();
+const observers: Set<{observer: Observer, ...}> = new Set();
 const ignorePatterns: Set<IgnorePattern> = new Set();
 const registry: Registry = new Map();
 
diff --git a/Libraries/YellowBox/YellowBox.js b/Libraries/YellowBox/YellowBox.js
index 825b2590653..b91e88f6447 100644
--- a/Libraries/YellowBox/YellowBox.js
+++ b/Libraries/YellowBox/YellowBox.js
@@ -172,4 +172,5 @@ module.exports = (YellowBox: Class<React.Component<Props, State>> & {
   ignoreWarnings($ReadOnlyArray<IgnorePattern>): void,
   install(): void,
   uninstall(): void,
+  ...
 });
diff --git a/RNTester/RCTTest/RCTSnapshotNativeComponent.js b/RNTester/RCTTest/RCTSnapshotNativeComponent.js
index 9cd05e5637f..7b7b3dcdbc1 100644
--- a/RNTester/RCTTest/RCTSnapshotNativeComponent.js
+++ b/RNTester/RCTTest/RCTSnapshotNativeComponent.js
@@ -17,9 +17,7 @@ import type {SyntheticEvent} from '../../Libraries/Types/CoreEventTypes';
 import type {ViewProps} from '../../Libraries/Components/View/ViewPropTypes';
 
 type SnapshotReadyEvent = SyntheticEvent<
-  $ReadOnly<{
-    testIdentifier: string,
-  }>,
+  $ReadOnly<{testIdentifier: string, ...}>,
 >;
 
 type NativeProps = $ReadOnly<{|
diff --git a/RNTester/js/RNTesterApp.android.js b/RNTester/js/RNTesterApp.android.js
index b3afbc4ef09..fd3655deec2 100644
--- a/RNTester/js/RNTesterApp.android.js
+++ b/RNTester/js/RNTesterApp.android.js
@@ -45,9 +45,7 @@ UIManager.setLayoutAnimationEnabledExperimental(true);
 
 const DRAWER_WIDTH_LEFT = 56;
 
-type Props = {
-  exampleFromAppetizeParams?: ?string,
-};
+type Props = {exampleFromAppetizeParams?: ?string, ...};
 
 const APP_STATE_KEY = 'RNTesterAppState.v2';
 
@@ -63,6 +61,7 @@ const Header = ({
 }: {
   onPressDrawer?: () => mixed,
   title: string,
+  ...
 }) => (
   <RNTesterThemeContext.Consumer>
     {theme => {
@@ -94,6 +93,7 @@ const RNTesterExampleContainerViaHook = ({
   title: string,
   module: RNTesterExample,
   exampleRef: () => void,
+  ...
 }) => {
   const colorScheme = useColorScheme();
   const theme = colorScheme === 'dark' ? themes.dark : themes.light;
@@ -115,7 +115,9 @@ const RNTesterDrawerContentViaHook = ({
   list: {
     ComponentExamples: Array<RNTesterExample>,
     APIExamples: Array<RNTesterExample>,
+    ...
   },
+  ...
 }) => {
   const colorScheme = useColorScheme();
   const theme = colorScheme === 'dark' ? themes.dark : themes.light;
@@ -149,7 +151,9 @@ const RNTesterExampleListViaHook = ({
   list: {
     ComponentExamples: Array<RNTesterExample>,
     APIExamples: Array<RNTesterExample>,
+    ...
   },
+  ...
 }) => {
   const colorScheme = useColorScheme();
   const theme = colorScheme === 'dark' ? themes.dark : themes.light;
diff --git a/RNTester/js/RNTesterApp.ios.js b/RNTester/js/RNTesterApp.ios.js
index a92e634b70a..8245a68d12b 100644
--- a/RNTester/js/RNTesterApp.ios.js
+++ b/RNTester/js/RNTesterApp.ios.js
@@ -40,9 +40,7 @@ import type {RNTesterNavigationState} from './utils/RNTesterNavigationReducer';
 import {RNTesterThemeContext, themes} from './components/RNTesterTheme';
 import type {ColorSchemeName} from '../../Libraries/Utilities/NativeAppearance';
 
-type Props = {
-  exampleFromAppetizeParams?: ?string,
-};
+type Props = {exampleFromAppetizeParams?: ?string, ...};
 
 YellowBox.ignoreWarnings([
   'Module RCTImagePickerManager requires main queue setup',
@@ -50,7 +48,14 @@ YellowBox.ignoreWarnings([
 
 const APP_STATE_KEY = 'RNTesterAppState.v2';
 
-const Header = ({onBack, title}: {onBack?: () => mixed, title: string}) => (
+const Header = ({
+  onBack,
+  title,
+}: {
+  onBack?: () => mixed,
+  title: string,
+  ...
+}) => (
   <RNTesterThemeContext.Consumer>
     {theme => {
       return (
@@ -95,6 +100,7 @@ const RNTesterExampleContainerViaHook = ({
   onBack?: () => mixed,
   title: string,
   module: RNTesterExample,
+  ...
 }) => {
   const colorScheme: ?ColorSchemeName = useColorScheme();
   const theme = colorScheme === 'dark' ? themes.dark : themes.light;
@@ -116,7 +122,9 @@ const RNTesterExampleListViaHook = ({
   list: {
     ComponentExamples: Array<RNTesterExample>,
     APIExamples: Array<RNTesterExample>,
+    ...
   },
+  ...
 }) => {
   const colorScheme: ?ColorSchemeName = useColorScheme();
   const theme = colorScheme === 'dark' ? themes.dark : themes.light;
@@ -245,7 +253,7 @@ RNTesterList.ComponentExamples.concat(RNTesterList.APIExamples).forEach(
   (Example: RNTesterExample) => {
     const ExampleModule = Example.module;
     if (ExampleModule.displayName) {
-      class Snapshotter extends React.Component<{}> {
+      class Snapshotter extends React.Component<{...}> {
         render() {
           return (
             <SnapshotViewIOS>
diff --git a/RNTester/js/components/ListExampleShared.js b/RNTester/js/components/ListExampleShared.js
index 82a53273279..522d72e3d93 100644
--- a/RNTester/js/components/ListExampleShared.js
+++ b/RNTester/js/components/ListExampleShared.js
@@ -30,6 +30,7 @@ export type Item = {
   key: string,
   pressed: boolean,
   noImage?: ?boolean,
+  ...
 };
 
 function genItemData(count: number, start: number = 0): Array<Item> {
@@ -56,6 +57,7 @@ class ItemComponent extends React.PureComponent<{
   onPress: (key: string) => void,
   onShowUnderlay?: () => void,
   onHideUnderlay?: () => void,
+  ...
 }> {
   _onPress = () => {
     this.props.onPress(this.props.item.key);
@@ -88,7 +90,7 @@ class ItemComponent extends React.PureComponent<{
   }
 }
 
-const renderStackedItem = ({item}: {item: Item}): React.Node => {
+const renderStackedItem = ({item}: {item: Item, ...}): React.Node => {
   const itemHash = Math.abs(hashCode(item.title));
   const imgSource = THUMB_URLS[itemHash % THUMB_URLS.length];
   return (
@@ -101,7 +103,7 @@ const renderStackedItem = ({item}: {item: Item}): React.Node => {
   );
 };
 
-class FooterComponent extends React.PureComponent<{}> {
+class FooterComponent extends React.PureComponent<{...}> {
   render(): React.Node {
     return (
       <View style={styles.headerFooterContainer}>
@@ -114,7 +116,7 @@ class FooterComponent extends React.PureComponent<{}> {
   }
 }
 
-class HeaderComponent extends React.PureComponent<{}> {
+class HeaderComponent extends React.PureComponent<{...}> {
   render(): React.Node {
     return (
       <View style={styles.headerFooterContainer}>
@@ -127,7 +129,7 @@ class HeaderComponent extends React.PureComponent<{}> {
   }
 }
 
-class ListEmptyComponent extends React.PureComponent<{}> {
+class ListEmptyComponent extends React.PureComponent<{...}> {
   render(): React.Node {
     return (
       <View style={styles.listEmpty}>
@@ -137,7 +139,7 @@ class ListEmptyComponent extends React.PureComponent<{}> {
   }
 }
 
-class SeparatorComponent extends React.PureComponent<{}> {
+class SeparatorComponent extends React.PureComponent<{...}> {
   render(): React.Node {
     return <View style={styles.separator} />;
   }
diff --git a/RNTester/js/components/RNTesterExampleFilter.js b/RNTester/js/components/RNTesterExampleFilter.js
index 841cd2e657d..992f30e6bc6 100644
--- a/RNTester/js/components/RNTesterExampleFilter.js
+++ b/RNTester/js/components/RNTesterExampleFilter.js
@@ -21,11 +21,10 @@ type Props = {
   sections: Object,
   disableSearch?: boolean,
   testID?: string,
+  ...
 };
 
-type State = {
-  filter: string,
-};
+type State = {filter: string, ...};
 
 class RNTesterExampleFilter extends React.Component<Props, State> {
   state: State = {filter: ''};
diff --git a/RNTester/js/components/RNTesterExampleList.js b/RNTester/js/components/RNTesterExampleList.js
index 3dcc9c8c1ec..bbbfb764a77 100644
--- a/RNTester/js/components/RNTesterExampleList.js
+++ b/RNTester/js/components/RNTesterExampleList.js
@@ -33,8 +33,10 @@ type Props = {
   list: {
     ComponentExamples: Array<RNTesterExample>,
     APIExamples: Array<RNTesterExample>,
+    ...
   },
   style?: ?ViewStyleProp,
+  ...
 };
 
 class RowComponent extends React.PureComponent<{
@@ -43,6 +45,7 @@ class RowComponent extends React.PureComponent<{
   onPress?: Function,
   onShowUnderlay?: Function,
   onHideUnderlay?: Function,
+  ...
 }> {
   _onPress = () => {
     if (this.props.onPress) {
diff --git a/RNTester/js/components/RNTesterTheme.js b/RNTester/js/components/RNTesterTheme.js
index 5f2789b4c84..b78a8344fe2 100644
--- a/RNTester/js/components/RNTesterTheme.js
+++ b/RNTester/js/components/RNTesterTheme.js
@@ -34,6 +34,7 @@ export type RNTesterTheme = {
   LinkColor: string,
   SystemPurpleColor: string,
   ToolbarColor: string,
+  ...
 };
 
 export const RNTesterLightTheme = {
diff --git a/RNTester/js/components/createExamplePage.js b/RNTester/js/components/createExamplePage.js
index 05db48f0ad9..b508bc0dd91 100644
--- a/RNTester/js/components/createExamplePage.js
+++ b/RNTester/js/components/createExamplePage.js
@@ -19,7 +19,7 @@ const createExamplePage = function(
   title: ?string,
   exampleModule: RNTesterExample,
 ): React.ComponentType<any> {
-  class ExamplePage extends React.Component<{}> {
+  class ExamplePage extends React.Component<{...}> {
     render() {
       return <RNTesterExampleContainer module={exampleModule} title={title} />;
     }
diff --git a/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExApp.js b/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExApp.js
index 993dc4129f1..849efab08ea 100644
--- a/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExApp.js
+++ b/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExApp.js
@@ -311,7 +311,11 @@ class AnExApp extends React.Component<any, any> {
   }
 }
 
-type Point = {x: number, y: number};
+type Point = {
+  x: number,
+  y: number,
+  ...
+};
 function distance(p1: Point, p2: Point): number {
   const dx = p1.x - p2.x;
   const dy = p1.y - p2.y;
diff --git a/RNTester/js/examples/Appearance/AppearanceExample.js b/RNTester/js/examples/Appearance/AppearanceExample.js
index bc8f163026e..ab99e9213bf 100644
--- a/RNTester/js/examples/Appearance/AppearanceExample.js
+++ b/RNTester/js/examples/Appearance/AppearanceExample.js
@@ -16,8 +16,8 @@ import type {AppearancePreferences} from '../../../../Libraries/Utilities/Native
 import {RNTesterThemeContext, themes} from '../../components/RNTesterTheme';
 
 class ColorSchemeSubscription extends React.Component<
-  {},
-  {colorScheme: ?string},
+  {...},
+  {colorScheme: ?string, ...},
 > {
   state = {
     colorScheme: Appearance.getColorScheme(),
diff --git a/RNTester/js/examples/AsyncStorage/AsyncStorageExample.js b/RNTester/js/examples/AsyncStorage/AsyncStorageExample.js
index dd20ff711f6..cbbb13acdbd 100644
--- a/RNTester/js/examples/AsyncStorage/AsyncStorageExample.js
+++ b/RNTester/js/examples/AsyncStorage/AsyncStorageExample.js
@@ -17,7 +17,7 @@ const PickerItemIOS = PickerIOS.Item;
 const STORAGE_KEY = '@AsyncStorageExample:key';
 const COLORS = ['red', 'orange', 'yellow', 'green', 'blue'];
 
-class BasicStorageExample extends React.Component<{}, $FlowFixMeState> {
+class BasicStorageExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     selectedValue: COLORS[0],
     messages: [],
diff --git a/RNTester/js/examples/Dimensions/DimensionsExample.js b/RNTester/js/examples/Dimensions/DimensionsExample.js
index c593cec95ec..b5d0e4fe630 100644
--- a/RNTester/js/examples/Dimensions/DimensionsExample.js
+++ b/RNTester/js/examples/Dimensions/DimensionsExample.js
@@ -14,8 +14,8 @@ import {Dimensions, Text, useWindowDimensions} from 'react-native';
 import * as React from 'react';
 
 class DimensionsSubscription extends React.Component<
-  {dim: string},
-  {dims: Object},
+  {dim: string, ...},
+  {dims: Object, ...},
 > {
   state = {
     dims: Dimensions.get(this.props.dim),
diff --git a/RNTester/js/examples/FlatList/FlatListExample.js b/RNTester/js/examples/FlatList/FlatListExample.js
index a633d4be928..c452ace6040 100644
--- a/RNTester/js/examples/FlatList/FlatListExample.js
+++ b/RNTester/js/examples/FlatList/FlatListExample.js
@@ -236,7 +236,9 @@ class FlatListExample extends React.PureComponent<Props, State> {
       item: any,
       index: ?number,
       section?: any,
+      ...
     }>,
+    ...
   }) => {
     // Impressions can be logged here
     if (this.state.logViewable) {
diff --git a/RNTester/js/examples/Layout/LayoutAnimationExample.js b/RNTester/js/examples/Layout/LayoutAnimationExample.js
index 8c724166002..4a0eac9fc58 100644
--- a/RNTester/js/examples/Layout/LayoutAnimationExample.js
+++ b/RNTester/js/examples/Layout/LayoutAnimationExample.js
@@ -19,7 +19,7 @@ const {
   TouchableOpacity,
 } = require('react-native');
 
-class AddRemoveExample extends React.Component<{}, $FlowFixMeState> {
+class AddRemoveExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     views: [],
   };
@@ -74,7 +74,7 @@ const BlueSquare = () => (
   </View>
 );
 
-class CrossFadeExample extends React.Component<{}, $FlowFixMeState> {
+class CrossFadeExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     toggled: false,
   };
@@ -102,7 +102,7 @@ class CrossFadeExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class LayoutUpdateExample extends React.Component<{}, $FlowFixMeState> {
+class LayoutUpdateExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     width: 200,
     height: 100,
diff --git a/RNTester/js/examples/Layout/LayoutEventsExample.js b/RNTester/js/examples/Layout/LayoutEventsExample.js
index 000b52dafc1..4791cba84a9 100644
--- a/RNTester/js/examples/Layout/LayoutEventsExample.js
+++ b/RNTester/js/examples/Layout/LayoutEventsExample.js
@@ -33,6 +33,7 @@ type State = {
   textLayout?: ViewLayout,
   viewLayout?: ViewLayout,
   viewStyle: {|margin: number|},
+  ...
 };
 
 class LayoutEventExample extends React.Component<Props, State> {
diff --git a/RNTester/js/examples/Modal/ModalExample.js b/RNTester/js/examples/Modal/ModalExample.js
index 2279df565e6..d8418f496fe 100644
--- a/RNTester/js/examples/Modal/ModalExample.js
+++ b/RNTester/js/examples/Modal/ModalExample.js
@@ -71,7 +71,7 @@ const supportedOrientationsPickerValues = [
   [],
 ];
 
-class ModalExample extends React.Component<{}, $FlowFixMeState> {
+class ModalExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     animationType: 'none',
     modalVisible: false,
diff --git a/RNTester/js/examples/MultiColumn/MultiColumnExample.js b/RNTester/js/examples/MultiColumn/MultiColumnExample.js
index aa1ea81b136..601ddf67b12 100644
--- a/RNTester/js/examples/MultiColumn/MultiColumnExample.js
+++ b/RNTester/js/examples/MultiColumn/MultiColumnExample.js
@@ -110,7 +110,12 @@ class MultiColumnExample extends React.PureComponent<
   _getItemLayout(
     data: any,
     index: number,
-  ): {length: number, offset: number, index: number} {
+  ): {
+    length: number,
+    offset: number,
+    index: number,
+    ...
+  } {
     const length =
       getItemLayout(data, index).length + 2 * (CARD_MARGIN + BORDER_WIDTH);
     return {length, offset: length * index, index};
@@ -131,10 +136,12 @@ class MultiColumnExample extends React.PureComponent<
     changed: Array<{
       key: string,
       isViewable: boolean,
-      item: {columns: Array<*>},
+      item: {columns: Array<*>, ...},
       index: ?number,
       section?: any,
+      ...
     }>,
+    ...
   }) => {
     // Impressions can be logged here
     if (this.state.logViewable) {
diff --git a/RNTester/js/examples/NativeAnimation/NativeAnimationsExample.js b/RNTester/js/examples/NativeAnimation/NativeAnimationsExample.js
index 01b6b077294..cd20cb7ca50 100644
--- a/RNTester/js/examples/NativeAnimation/NativeAnimationsExample.js
+++ b/RNTester/js/examples/NativeAnimation/NativeAnimationsExample.js
@@ -72,7 +72,7 @@ class Tester extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   }
 }
 
-class ValueListenerExample extends React.Component<{}, $FlowFixMeState> {
+class ValueListenerExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     anim: new Animated.Value(0),
     progress: 0,
@@ -121,7 +121,7 @@ class ValueListenerExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class LoopExample extends React.Component<{}, $FlowFixMeState> {
+class LoopExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     value: new Animated.Value(0),
   };
@@ -157,8 +157,12 @@ class LoopExample extends React.Component<{}, $FlowFixMeState> {
 
 const RNTesterSettingSwitchRow = require('../../components/RNTesterSettingSwitchRow');
 class InternalSettings extends React.Component<
-  {},
-  {busyTime: number | string, filteredStall: number},
+  {...},
+  {
+    busyTime: number | string,
+    filteredStall: number,
+    ...
+  },
 > {
   _stallInterval: ?number;
   render() {
@@ -220,7 +224,7 @@ class InternalSettings extends React.Component<
   }
 }
 
-class EventExample extends React.Component<{}, $FlowFixMeState> {
+class EventExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     anim: new Animated.Value(0),
   };
diff --git a/RNTester/js/examples/OrientationChange/OrientationChangeExample.js b/RNTester/js/examples/OrientationChange/OrientationChangeExample.js
index 5375a68fd77..98e3de6348b 100644
--- a/RNTester/js/examples/OrientationChange/OrientationChangeExample.js
+++ b/RNTester/js/examples/OrientationChange/OrientationChangeExample.js
@@ -16,7 +16,7 @@ const {DeviceEventEmitter, Text, View} = require('react-native');
 
 import type EmitterSubscription from '../../../../Libraries/vendor/emitter/EmitterSubscription';
 
-class OrientationChangeExample extends React.Component<{}, $FlowFixMeState> {
+class OrientationChangeExample extends React.Component<{...}, $FlowFixMeState> {
   _orientationSubscription: EmitterSubscription;
 
   state = {
diff --git a/RNTester/js/examples/PanResponder/PanResponderExample.js b/RNTester/js/examples/PanResponder/PanResponderExample.js
index cc480520f33..db85851eb38 100644
--- a/RNTester/js/examples/PanResponder/PanResponderExample.js
+++ b/RNTester/js/examples/PanResponder/PanResponderExample.js
@@ -24,6 +24,7 @@ type CircleStyles = {
   backgroundColor?: string,
   left?: number,
   top?: number,
+  ...
 };
 
 const CIRCLE_SIZE = 80;
diff --git a/RNTester/js/examples/PermissionsAndroid/PermissionsExample.js b/RNTester/js/examples/PermissionsAndroid/PermissionsExample.js
index 3e7b2f2b41b..09ad095380c 100644
--- a/RNTester/js/examples/PermissionsAndroid/PermissionsExample.js
+++ b/RNTester/js/examples/PermissionsAndroid/PermissionsExample.js
@@ -23,7 +23,7 @@ const {
 
 const Item = Picker.Item;
 
-class PermissionsExample extends React.Component<{}, $FlowFixMeState> {
+class PermissionsExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     permission: PermissionsAndroid.PERMISSIONS.CAMERA,
     hasPermission: 'Not Checked',
diff --git a/RNTester/js/examples/Picker/PickerExample.js b/RNTester/js/examples/Picker/PickerExample.js
index d43a7dd3cdf..7672b9ea420 100644
--- a/RNTester/js/examples/Picker/PickerExample.js
+++ b/RNTester/js/examples/Picker/PickerExample.js
@@ -16,11 +16,9 @@ const {Picker, StyleSheet, Text} = require('react-native');
 
 const Item = Picker.Item;
 
-type State = {
-  value: string | number,
-};
+type State = {value: string | number, ...};
 
-class BasicPickerExample extends React.Component<{}, State> {
+class BasicPickerExample extends React.Component<{...}, State> {
   state: State = {
     value: 'key1',
   };
@@ -39,7 +37,7 @@ class BasicPickerExample extends React.Component<{}, State> {
   }
 }
 
-class DisabledPickerExample extends React.Component<{}, State> {
+class DisabledPickerExample extends React.Component<{...}, State> {
   state: State = {
     value: 'key1',
   };
@@ -57,7 +55,7 @@ class DisabledPickerExample extends React.Component<{}, State> {
   }
 }
 
-class DropdownPickerExample extends React.Component<{}, State> {
+class DropdownPickerExample extends React.Component<{...}, State> {
   state: State = {
     value: 'key1',
   };
@@ -76,7 +74,7 @@ class DropdownPickerExample extends React.Component<{}, State> {
   }
 }
 
-class PromptPickerExample extends React.Component<{}, State> {
+class PromptPickerExample extends React.Component<{...}, State> {
   state: State = {
     value: 'key1',
   };
@@ -95,11 +93,9 @@ class PromptPickerExample extends React.Component<{}, State> {
   }
 }
 
-type ColorState = {
-  color: string | number,
-};
+type ColorState = {color: string | number, ...};
 
-class ColorPickerExample extends React.Component<{}, ColorState> {
+class ColorPickerExample extends React.Component<{...}, ColorState> {
   state: ColorState = {
     color: 'red',
   };
diff --git a/RNTester/js/examples/Picker/PickerIOSExample.js b/RNTester/js/examples/Picker/PickerIOSExample.js
index e71e03539a6..6993c7ad743 100644
--- a/RNTester/js/examples/Picker/PickerIOSExample.js
+++ b/RNTester/js/examples/Picker/PickerIOSExample.js
@@ -97,7 +97,7 @@ const CAR_MAKES_AND_MODELS = {
   },
 };
 
-class PickerExample extends React.Component<{}, $FlowFixMeState> {
+class PickerExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     carMake: 'cadillac',
     modelIndex: 3,
@@ -142,7 +142,7 @@ class PickerExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class PickerStyleExample extends React.Component<{}, $FlowFixMeState> {
+class PickerStyleExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     carMake: 'cadillac',
     modelIndex: 0,
diff --git a/RNTester/js/examples/PointerEvents/PointerEventsExample.js b/RNTester/js/examples/PointerEvents/PointerEventsExample.js
index 9862a03b658..fcca307e9ea 100644
--- a/RNTester/js/examples/PointerEvents/PointerEventsExample.js
+++ b/RNTester/js/examples/PointerEvents/PointerEventsExample.js
@@ -169,6 +169,7 @@ type ExampleClass = {
   Component: React.ComponentType<any>,
   title: string,
   description: string,
+  ...
 };
 
 const exampleClasses: Array<ExampleClass> = [
diff --git a/RNTester/js/examples/ProgressBarAndroid/ProgressBarAndroidExample.android.js b/RNTester/js/examples/ProgressBarAndroid/ProgressBarAndroidExample.android.js
index 5024f2970d5..fde9562ed8f 100644
--- a/RNTester/js/examples/ProgressBarAndroid/ProgressBarAndroidExample.android.js
+++ b/RNTester/js/examples/ProgressBarAndroid/ProgressBarAndroidExample.android.js
@@ -19,18 +19,11 @@ const {ProgressBarAndroid: ProgressBar} = require('react-native');
 import type {ProgressBarAndroidProps} from '../../../../Libraries/Components/ProgressBarAndroid/ProgressBarAndroid';
 
 type MovingBarProps = $ReadOnly<{|
-  ...$Diff<
-    ProgressBarAndroidProps,
-    {
-      progress: ?number,
-    },
-  >,
+  ...$Diff<ProgressBarAndroidProps, {progress: ?number, ...}>,
   indeterminate: false,
 |}>;
 
-type MovingBarState = {
-  progress: number,
-};
+type MovingBarState = {progress: number, ...};
 
 class MovingBar extends React.Component<MovingBarProps, MovingBarState> {
   _intervalID: ?IntervalID = null;
@@ -57,7 +50,7 @@ class MovingBar extends React.Component<MovingBarProps, MovingBarState> {
   }
 }
 
-class ProgressBarAndroidExample extends React.Component<{}> {
+class ProgressBarAndroidExample extends React.Component<{...}> {
   render(): React.Node {
     return (
       <RNTesterPage title="ProgressBar Examples">
diff --git a/RNTester/js/examples/PushNotificationIOS/PushNotificationIOSExample.js b/RNTester/js/examples/PushNotificationIOS/PushNotificationIOSExample.js
index 31eea14aed3..c291a7a6e5e 100644
--- a/RNTester/js/examples/PushNotificationIOS/PushNotificationIOSExample.js
+++ b/RNTester/js/examples/PushNotificationIOS/PushNotificationIOSExample.js
@@ -34,7 +34,7 @@ class Button extends React.Component<$FlowFixMeProps> {
   }
 }
 
-class NotificationExample extends React.Component<{}> {
+class NotificationExample extends React.Component<{...}> {
   UNSAFE_componentWillMount() {
     PushNotificationIOS.addEventListener('register', this._onRegistered);
     PushNotificationIOS.addEventListener(
diff --git a/RNTester/js/examples/RCTRootView/RCTRootViewIOSExample.js b/RNTester/js/examples/RCTRootView/RCTRootViewIOSExample.js
index 222df450960..0ed34bcac5d 100644
--- a/RNTester/js/examples/RCTRootView/RCTRootViewIOSExample.js
+++ b/RNTester/js/examples/RCTRootView/RCTRootViewIOSExample.js
@@ -18,7 +18,7 @@ const {
   requireNativeComponent,
 } = require('react-native');
 
-class AppPropertiesUpdateExample extends React.Component<{}> {
+class AppPropertiesUpdateExample extends React.Component<{...}> {
   render() {
     // Do not require this unless we are actually rendering.
     const UpdatePropertiesExampleView = requireNativeComponent(
@@ -40,7 +40,7 @@ class AppPropertiesUpdateExample extends React.Component<{}> {
   }
 }
 
-class RootViewSizeFlexibilityExample extends React.Component<{}> {
+class RootViewSizeFlexibilityExample extends React.Component<{...}> {
   render() {
     // Do not require this unless we are actually rendering.
     const FlexibleSizeExampleView = requireNativeComponent(
diff --git a/RNTester/js/examples/RTL/RTLExample.js b/RNTester/js/examples/RTL/RTLExample.js
index 5bf3b8d06d4..2008ea0ca8a 100644
--- a/RNTester/js/examples/RTL/RTLExample.js
+++ b/RNTester/js/examples/RTL/RTLExample.js
@@ -32,16 +32,16 @@ type State = {
   pan: Object,
   linear: Object,
   isRTL: boolean,
+  ...
 };
 
-type RTLToggleState = {
-  isRTL: boolean,
-};
+type RTLToggleState = {isRTL: boolean, ...};
 
 type AnimationState = {
   toggleStatus: any,
   linear: Object,
   windowWidth: number,
+  ...
 };
 
 const SCALE = PixelRatio.get();
diff --git a/RNTester/js/examples/RootViewSizeFlexibilityExample/RootViewSizeFlexibilityExampleApp.js b/RNTester/js/examples/RootViewSizeFlexibilityExample/RootViewSizeFlexibilityExampleApp.js
index acd4f52733a..ccaf8e82b64 100644
--- a/RNTester/js/examples/RootViewSizeFlexibilityExample/RootViewSizeFlexibilityExampleApp.js
+++ b/RNTester/js/examples/RootViewSizeFlexibilityExample/RootViewSizeFlexibilityExampleApp.js
@@ -15,10 +15,10 @@ const React = require('react');
 const {StyleSheet, Text, TouchableHighlight, View} = require('react-native');
 
 class RootViewSizeFlexibilityExampleApp extends React.Component<
-  {toggled: boolean},
+  {toggled: boolean, ...},
   any,
 > {
-  constructor(props: {toggled: boolean}) {
+  constructor(props: {toggled: boolean, ...}) {
     super(props);
     this.state = {toggled: false};
   }
diff --git a/RNTester/js/examples/SafeAreaView/SafeAreaViewExample.js b/RNTester/js/examples/SafeAreaView/SafeAreaViewExample.js
index b1bb6cf8f3a..a80d717b972 100644
--- a/RNTester/js/examples/SafeAreaView/SafeAreaViewExample.js
+++ b/RNTester/js/examples/SafeAreaView/SafeAreaViewExample.js
@@ -24,7 +24,7 @@ const {
 } = require('react-native');
 
 class SafeAreaViewExample extends React.Component<
-  {},
+  {...},
   {|
     modalVisible: boolean,
     emulateUnlessSupported: boolean,
@@ -83,7 +83,7 @@ class SafeAreaViewExample extends React.Component<
   }
 }
 
-class IsIPhoneXExample extends React.Component<{}> {
+class IsIPhoneXExample extends React.Component<{...}> {
   render() {
     return (
       <View>
diff --git a/RNTester/js/examples/ScrollView/ScrollViewAnimatedExample.js b/RNTester/js/examples/ScrollView/ScrollViewAnimatedExample.js
index a111dad80af..7321369fc4c 100644
--- a/RNTester/js/examples/ScrollView/ScrollViewAnimatedExample.js
+++ b/RNTester/js/examples/ScrollView/ScrollViewAnimatedExample.js
@@ -23,7 +23,7 @@ const {
   Dimensions,
 } = ReactNative;
 
-class ScrollViewAnimatedExample extends Component<{}> {
+class ScrollViewAnimatedExample extends Component<{...}> {
   _scrollViewPos = new Animated.Value(0);
 
   startAnimation: () => void = () => {
diff --git a/RNTester/js/examples/ScrollView/ScrollViewExample.js b/RNTester/js/examples/ScrollView/ScrollViewExample.js
index 4d2106d335c..c00ea24ea83 100644
--- a/RNTester/js/examples/ScrollView/ScrollViewExample.js
+++ b/RNTester/js/examples/ScrollView/ScrollViewExample.js
@@ -128,7 +128,7 @@ exports.examples = [
     title: '<ScrollView> enable & disable\n',
     description: 'ScrollView scrolling behaviour can be disabled and enabled',
     render: function(): React.Node {
-      class EnableDisableList extends React.Component<{}, *> {
+      class EnableDisableList extends React.Component<{...}, *> {
         state = {
           scrollEnabled: true,
         };
@@ -172,7 +172,7 @@ if (Platform.OS === 'ios') {
       'without causing the visible content to jump. Re-ordering is not supported.',
     render: function() {
       let itemCount = 6;
-      class AppendingList extends React.Component<{}, *> {
+      class AppendingList extends React.Component<{...}, *> {
         state = {
           /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses
            * an error found when Flow v0.85 was deployed. To see the error,
diff --git a/RNTester/js/examples/ScrollView/ScrollViewSimpleExample.js b/RNTester/js/examples/ScrollView/ScrollViewSimpleExample.js
index 0409560c04d..ae654006496 100644
--- a/RNTester/js/examples/ScrollView/ScrollViewSimpleExample.js
+++ b/RNTester/js/examples/ScrollView/ScrollViewSimpleExample.js
@@ -21,7 +21,7 @@ const {
 
 const NUM_ITEMS = 20;
 
-class ScrollViewSimpleExample extends React.Component<{}> {
+class ScrollViewSimpleExample extends React.Component<{...}> {
   makeItems: (nItems: number, styles: any) => Array<any> = (
     nItems: number,
     styles,
diff --git a/RNTester/js/examples/SectionList/SectionListExample.js b/RNTester/js/examples/SectionList/SectionListExample.js
index 193c9eb7da8..d3b895e6362 100644
--- a/RNTester/js/examples/SectionList/SectionListExample.js
+++ b/RNTester/js/examples/SectionList/SectionListExample.js
@@ -67,7 +67,7 @@ const CustomSeparatorComponent = ({highlighted, text}) => (
   </View>
 );
 
-class SectionListExample extends React.PureComponent<{}, $FlowFixMeState> {
+class SectionListExample extends React.PureComponent<{...}, $FlowFixMeState> {
   state:
     | any
     | {|
@@ -230,10 +230,12 @@ class SectionListExample extends React.PureComponent<{}, $FlowFixMeState> {
     changed: Array<{
       key: string,
       isViewable: boolean,
-      item: {columns: Array<*>},
+      item: {columns: Array<*>, ...},
       index: ?number,
       section?: any,
+      ...
     }>,
+    ...
   }) => {
     // Impressions can be logged here
     if (this.state.logViewable) {
diff --git a/RNTester/js/examples/SegmentedControlIOS/SegmentedControlIOSExample.js b/RNTester/js/examples/SegmentedControlIOS/SegmentedControlIOSExample.js
index 64a277d727e..0c20da7b148 100644
--- a/RNTester/js/examples/SegmentedControlIOS/SegmentedControlIOSExample.js
+++ b/RNTester/js/examples/SegmentedControlIOS/SegmentedControlIOSExample.js
@@ -13,7 +13,7 @@
 const React = require('react');
 const {SegmentedControlIOS, Text, View, StyleSheet} = require('react-native');
 
-class BasicSegmentedControlExample extends React.Component<{}> {
+class BasicSegmentedControlExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -30,7 +30,7 @@ class BasicSegmentedControlExample extends React.Component<{}> {
   }
 }
 
-class PreSelectedSegmentedControlExample extends React.Component<{}> {
+class PreSelectedSegmentedControlExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -42,7 +42,7 @@ class PreSelectedSegmentedControlExample extends React.Component<{}> {
   }
 }
 
-class MomentarySegmentedControlExample extends React.Component<{}> {
+class MomentarySegmentedControlExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -54,7 +54,7 @@ class MomentarySegmentedControlExample extends React.Component<{}> {
   }
 }
 
-class DisabledSegmentedControlExample extends React.Component<{}> {
+class DisabledSegmentedControlExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -70,7 +70,7 @@ class DisabledSegmentedControlExample extends React.Component<{}> {
   }
 }
 
-class ColorSegmentedControlExample extends React.Component<{}> {
+class ColorSegmentedControlExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -94,7 +94,7 @@ class ColorSegmentedControlExample extends React.Component<{}> {
 }
 
 class EventSegmentedControlExample extends React.Component<
-  {},
+  {...},
   $FlowFixMeState,
 > {
   state = {
diff --git a/RNTester/js/examples/Snapshot/SnapshotExample.js b/RNTester/js/examples/Snapshot/SnapshotExample.js
index b9057124481..98378fc7a70 100644
--- a/RNTester/js/examples/Snapshot/SnapshotExample.js
+++ b/RNTester/js/examples/Snapshot/SnapshotExample.js
@@ -21,7 +21,7 @@ const {
 } = require('react-native');
 const ScreenshotManager = NativeModules.ScreenshotManager;
 
-class ScreenshotExample extends React.Component<{}, $FlowFixMeState> {
+class ScreenshotExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     uri: undefined,
   };
diff --git a/RNTester/js/examples/Snapshot/SnapshotViewIOS.ios.js b/RNTester/js/examples/Snapshot/SnapshotViewIOS.ios.js
index 4aa32fb4dc3..59eb16899e7 100644
--- a/RNTester/js/examples/Snapshot/SnapshotViewIOS.ios.js
+++ b/RNTester/js/examples/Snapshot/SnapshotViewIOS.ios.js
@@ -27,9 +27,7 @@ const RCTSnapshot = UIManager.getViewManagerConfig('RCTSnapshot')
   : View;
 
 type SnapshotReadyEvent = SyntheticEvent<
-  $ReadOnly<{
-    testIdentifier: string,
-  }>,
+  $ReadOnly<{testIdentifier: string, ...}>,
 >;
 
 type Props = $ReadOnly<{|
diff --git a/RNTester/js/examples/StatusBar/StatusBarExample.js b/RNTester/js/examples/StatusBar/StatusBarExample.js
index 3180dc24911..60510df9db0 100644
--- a/RNTester/js/examples/StatusBar/StatusBarExample.js
+++ b/RNTester/js/examples/StatusBar/StatusBarExample.js
@@ -31,7 +31,7 @@ function getValue<T>(values: Array<T>, index: number): T {
   return values[index % values.length];
 }
 
-class StatusBarHiddenExample extends React.Component<{}, $FlowFixMeState> {
+class StatusBarHiddenExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     animated: true,
     hidden: false,
@@ -98,7 +98,7 @@ class StatusBarHiddenExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class StatusBarStyleExample extends React.Component<{}, $FlowFixMeState> {
+class StatusBarStyleExample extends React.Component<{...}, $FlowFixMeState> {
   _barStyleIndex = 0;
 
   _onChangeBarStyle = () => {
@@ -142,7 +142,7 @@ class StatusBarStyleExample extends React.Component<{}, $FlowFixMeState> {
 }
 
 class StatusBarNetworkActivityExample extends React.Component<
-  {},
+  {...},
   $FlowFixMeState,
 > {
   state = {
@@ -180,7 +180,7 @@ class StatusBarNetworkActivityExample extends React.Component<
 }
 
 class StatusBarBackgroundColorExample extends React.Component<
-  {},
+  {...},
   $FlowFixMeState,
 > {
   state = {
@@ -225,7 +225,10 @@ class StatusBarBackgroundColorExample extends React.Component<
   }
 }
 
-class StatusBarTranslucentExample extends React.Component<{}, $FlowFixMeState> {
+class StatusBarTranslucentExample extends React.Component<
+  {...},
+  $FlowFixMeState,
+> {
   state = {
     translucent: false,
   };
@@ -254,7 +257,7 @@ class StatusBarTranslucentExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class StatusBarStaticIOSExample extends React.Component<{}> {
+class StatusBarStaticIOSExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -317,7 +320,7 @@ class StatusBarStaticIOSExample extends React.Component<{}> {
   }
 }
 
-class StatusBarStaticAndroidExample extends React.Component<{}> {
+class StatusBarStaticAndroidExample extends React.Component<{...}> {
   render() {
     return (
       <View>
@@ -387,7 +390,7 @@ class StatusBarStaticAndroidExample extends React.Component<{}> {
   }
 }
 
-class ModalExample extends React.Component<{}, $FlowFixMeState> {
+class ModalExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     modalVisible: false,
   };
diff --git a/RNTester/js/examples/Switch/SwitchExample.js b/RNTester/js/examples/Switch/SwitchExample.js
index d1d81811b2b..ce825594e11 100644
--- a/RNTester/js/examples/Switch/SwitchExample.js
+++ b/RNTester/js/examples/Switch/SwitchExample.js
@@ -125,7 +125,7 @@ class DisabledSwitchExample extends React.Component<
   }
 }
 
-class ColorSwitchExample extends React.Component<{}, $FlowFixMeState> {
+class ColorSwitchExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     colorTrueSwitchIsOn: true,
     colorFalseSwitchIsOn: false,
@@ -158,7 +158,7 @@ class ColorSwitchExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class EventSwitchExample extends React.Component<{}, $FlowFixMeState> {
+class EventSwitchExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     eventSwitchIsOn: false,
     eventSwitchRegressionIsOn: true,
diff --git a/RNTester/js/examples/Text/TextExample.android.js b/RNTester/js/examples/Text/TextExample.android.js
index fc4a241ee23..796205352dd 100644
--- a/RNTester/js/examples/Text/TextExample.android.js
+++ b/RNTester/js/examples/Text/TextExample.android.js
@@ -27,7 +27,7 @@ class Entity extends React.Component<{|children: React.Node|}> {
     );
   }
 }
-class AttributeToggler extends React.Component<{}, $FlowFixMeState> {
+class AttributeToggler extends React.Component<{...}, $FlowFixMeState> {
   state = {fontWeight: 'bold', fontSize: 15};
 
   toggleWeight = () => {
@@ -70,7 +70,7 @@ class AttributeToggler extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class TextExample extends React.Component<{}> {
+class TextExample extends React.Component<{...}> {
   render(): React.Node {
     return (
       <RNTesterPage title="<Text>">
diff --git a/RNTester/js/examples/Text/TextExample.ios.js b/RNTester/js/examples/Text/TextExample.ios.js
index 8b28c6dfb26..a27e052d0b4 100644
--- a/RNTester/js/examples/Text/TextExample.ios.js
+++ b/RNTester/js/examples/Text/TextExample.ios.js
@@ -94,7 +94,7 @@ class Entity extends React.Component<$FlowFixMeProps> {
   }
 }
 
-class AttributeToggler extends React.Component<{}, $FlowFixMeState> {
+class AttributeToggler extends React.Component<{...}, $FlowFixMeState> {
   state = {fontWeight: 'bold', fontSize: 15};
 
   toggleWeight = () => {
diff --git a/RNTester/js/examples/TextInput/TextInputExample.android.js b/RNTester/js/examples/TextInput/TextInputExample.android.js
index aec7240a9dc..e08b07630f9 100644
--- a/RNTester/js/examples/TextInput/TextInputExample.android.js
+++ b/RNTester/js/examples/TextInput/TextInputExample.android.js
@@ -21,7 +21,7 @@ const {
   Switch,
 } = require('react-native');
 
-class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
+class TextEventsExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     curText: '<No Event>',
     prevText: '<No Event>',
@@ -179,7 +179,7 @@ class TokenizedTextExample extends React.Component<
   }
 }
 
-class BlurOnSubmitExample extends React.Component<{}> {
+class BlurOnSubmitExample extends React.Component<{...}> {
   focusNextField = nextField => {
     this.refs[nextField].focus();
   };
@@ -260,6 +260,7 @@ type SelectionExampleState = {
     end?: number,
   |}>,
   value: string,
+  ...
 };
 
 class SelectionExample extends React.Component<
@@ -337,7 +338,7 @@ class SelectionExample extends React.Component<
   }
 }
 
-class AutogrowingTextInputExample extends React.Component<{}> {
+class AutogrowingTextInputExample extends React.Component<{...}> {
   constructor(props) {
     super(props);
 
diff --git a/RNTester/js/examples/TextInput/TextInputExample.ios.js b/RNTester/js/examples/TextInput/TextInputExample.ios.js
index a22e6a5f2ec..2454cbbbb2c 100644
--- a/RNTester/js/examples/TextInput/TextInputExample.ios.js
+++ b/RNTester/js/examples/TextInput/TextInputExample.ios.js
@@ -37,7 +37,7 @@ class WithLabel extends React.Component<$FlowFixMeProps> {
   }
 }
 
-class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
+class TextEventsExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     curText: '<No Event>',
     prevText: '<No Event>',
@@ -99,7 +99,7 @@ class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class TextInputAccessoryViewExample extends React.Component<{}, *> {
+class TextInputAccessoryViewExample extends React.Component<{...}, *> {
   constructor(props) {
     super(props);
     this.state = {text: 'Placeholder Text'};
@@ -306,7 +306,7 @@ class TokenizedTextExample extends React.Component<$FlowFixMeProps, any> {
   }
 }
 
-class BlurOnSubmitExample extends React.Component<{}> {
+class BlurOnSubmitExample extends React.Component<{...}> {
   focusNextField = nextField => {
     this.refs[nextField].focus();
   };
@@ -367,6 +367,7 @@ type SelectionExampleState = {
     end?: number,
   |}>,
   value: string,
+  ...
 };
 
 class SelectionExample extends React.Component<
diff --git a/RNTester/js/examples/Touchable/TouchableExample.js b/RNTester/js/examples/Touchable/TouchableExample.js
index 3c5c876fbab..a687f13f1f0 100644
--- a/RNTester/js/examples/Touchable/TouchableExample.js
+++ b/RNTester/js/examples/Touchable/TouchableExample.js
@@ -30,7 +30,7 @@ import {useEffect, useRef, useState} from 'react';
 const forceTouchAvailable =
   (Platform.OS === 'ios' && Platform.constants.forceTouchAvailable) || false;
 
-class TouchableHighlightBox extends React.Component<{}, $FlowFixMeState> {
+class TouchableHighlightBox extends React.Component<{...}, $FlowFixMeState> {
   state = {
     timesPressed: 0,
   };
@@ -77,7 +77,10 @@ class TouchableHighlightBox extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class TouchableWithoutFeedbackBox extends React.Component<{}, $FlowFixMeState> {
+class TouchableWithoutFeedbackBox extends React.Component<
+  {...},
+  $FlowFixMeState,
+> {
   state = {
     timesPressed: 0,
   };
@@ -113,7 +116,7 @@ class TouchableWithoutFeedbackBox extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class TextOnPressBox extends React.Component<{}, $FlowFixMeState> {
+class TextOnPressBox extends React.Component<{...}, $FlowFixMeState> {
   state = {
     timesPressed: 0,
   };
@@ -148,7 +151,7 @@ class TextOnPressBox extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class TouchableFeedbackEvents extends React.Component<{}, $FlowFixMeState> {
+class TouchableFeedbackEvents extends React.Component<{...}, $FlowFixMeState> {
   state = {
     eventLog: [],
   };
@@ -188,7 +191,7 @@ class TouchableFeedbackEvents extends React.Component<{}, $FlowFixMeState> {
   };
 }
 
-class TouchableDelayEvents extends React.Component<{}, $FlowFixMeState> {
+class TouchableDelayEvents extends React.Component<{...}, $FlowFixMeState> {
   state = {
     eventLog: [],
   };
@@ -229,7 +232,7 @@ class TouchableDelayEvents extends React.Component<{}, $FlowFixMeState> {
   };
 }
 
-class ForceTouchExample extends React.Component<{}, $FlowFixMeState> {
+class ForceTouchExample extends React.Component<{...}, $FlowFixMeState> {
   state = {
     force: 0,
   };
@@ -263,7 +266,7 @@ class ForceTouchExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-class TouchableHitSlop extends React.Component<{}, $FlowFixMeState> {
+class TouchableHitSlop extends React.Component<{...}, $FlowFixMeState> {
   state = {
     timesPressed: 0,
   };
@@ -343,7 +346,7 @@ function TouchableNativeMethods() {
   );
 }
 
-class TouchableDisabled extends React.Component<{}> {
+class TouchableDisabled extends React.Component<{...}> {
   render() {
     return (
       <View>
diff --git a/RNTester/js/examples/TransparentHitTest/TransparentHitTestExample.js b/RNTester/js/examples/TransparentHitTest/TransparentHitTestExample.js
index e4cdee4d784..5c1f50cae40 100644
--- a/RNTester/js/examples/TransparentHitTest/TransparentHitTestExample.js
+++ b/RNTester/js/examples/TransparentHitTest/TransparentHitTestExample.js
@@ -13,7 +13,7 @@
 const React = require('react');
 const {Text, View, TouchableOpacity, Alert} = require('react-native');
 
-class TransparentHitTestExample extends React.Component<{}> {
+class TransparentHitTestExample extends React.Component<{...}> {
   render() {
     return (
       <View style={{flex: 1}}>
diff --git a/RNTester/js/examples/TurboModule/SampleTurboModuleExample.js b/RNTester/js/examples/TurboModule/SampleTurboModuleExample.js
index c72e49911d8..76871e57b54 100644
--- a/RNTester/js/examples/TurboModule/SampleTurboModuleExample.js
+++ b/RNTester/js/examples/TurboModule/SampleTurboModuleExample.js
@@ -22,7 +22,14 @@ import {
 import * as React from 'react';
 
 type State = {|
-  testResults: {[string]: {type: string, value: mixed}},
+  testResults: {
+    [string]: {
+      type: string,
+      value: mixed,
+      ...
+    },
+    ...,
+  },
 |};
 
 class SampleTurboModuleExample extends React.Component<{||}, State> {
diff --git a/RNTester/js/examples/XHR/XHRExampleAbortController.js b/RNTester/js/examples/XHR/XHRExampleAbortController.js
index f869098cc3e..76db33f8a35 100644
--- a/RNTester/js/examples/XHR/XHRExampleAbortController.js
+++ b/RNTester/js/examples/XHR/XHRExampleAbortController.js
@@ -14,7 +14,7 @@ const React = require('react');
 
 const {Alert, Button, View} = require('react-native');
 
-class XHRExampleAbortController extends React.Component<{}, {}> {
+class XHRExampleAbortController extends React.Component<{...}, {...}> {
   _timeout: any;
 
   _submit(abortDelay) {
diff --git a/RNTester/js/examples/XHR/XHRExampleBinaryUpload.js b/RNTester/js/examples/XHR/XHRExampleBinaryUpload.js
index adf83002c50..9dfbe61da5d 100644
--- a/RNTester/js/examples/XHR/XHRExampleBinaryUpload.js
+++ b/RNTester/js/examples/XHR/XHRExampleBinaryUpload.js
@@ -49,7 +49,7 @@ That is my proper element.
 --Faust, JW Goethe
 `;
 
-class XHRExampleBinaryUpload extends React.Component<{}, $FlowFixMeState> {
+class XHRExampleBinaryUpload extends React.Component<{...}, $FlowFixMeState> {
   static handlePostTestServerUpload(xhr: XMLHttpRequest) {
     if (xhr.status !== 200) {
       Alert.alert(
diff --git a/RNTester/js/examples/XHR/XHRExampleDownload.js b/RNTester/js/examples/XHR/XHRExampleDownload.js
index 15bb9e3e30b..41c414c108c 100644
--- a/RNTester/js/examples/XHR/XHRExampleDownload.js
+++ b/RNTester/js/examples/XHR/XHRExampleDownload.js
@@ -46,7 +46,7 @@ class ProgressBar extends React.Component<$FlowFixMeProps> {
   }
 }
 
-class XHRExampleDownload extends React.Component<{}, Object> {
+class XHRExampleDownload extends React.Component<{...}, Object> {
   state: Object = {
     downloading: false,
     // set by onreadystatechange
diff --git a/RNTester/js/utils/RNTesterActions.js b/RNTester/js/utils/RNTesterActions.js
index bfa181b05ca..d92bea4161c 100644
--- a/RNTester/js/utils/RNTesterActions.js
+++ b/RNTester/js/utils/RNTesterActions.js
@@ -12,17 +12,14 @@
 
 import type {RNTesterTheme} from '../components/RNTesterTheme';
 
-export type RNTesterBackAction = {
-  type: 'RNTesterBackAction',
-};
+export type RNTesterBackAction = {type: 'RNTesterBackAction', ...};
 
-export type RNTesterListAction = {
-  type: 'RNTesterListAction',
-};
+export type RNTesterListAction = {type: 'RNTesterListAction', ...};
 
 export type RNTesterExampleAction = {
   type: 'RNTesterExampleAction',
   openExample: string,
+  ...
 };
 
 export type RNTesterAction =
diff --git a/RNTester/js/utils/RNTesterNavigationReducer.js b/RNTester/js/utils/RNTesterNavigationReducer.js
index b406eabcf3a..ee8d9e273e4 100644
--- a/RNTester/js/utils/RNTesterNavigationReducer.js
+++ b/RNTester/js/utils/RNTesterNavigationReducer.js
@@ -12,9 +12,7 @@
 
 const RNTesterList = require('./RNTesterList');
 
-export type RNTesterNavigationState = {
-  openExample: ?string,
-};
+export type RNTesterNavigationState = {openExample: ?string, ...};
 
 function RNTesterNavigationReducer(
   state: ?RNTesterNavigationState,
diff --git a/RNTester/js/utils/RNTesterStatePersister.js b/RNTester/js/utils/RNTesterStatePersister.js
index b42c521d550..20845267130 100644
--- a/RNTester/js/utils/RNTesterStatePersister.js
+++ b/RNTester/js/utils/RNTesterStatePersister.js
@@ -16,6 +16,7 @@ const {AsyncStorage} = require('react-native');
 export type PassProps<State> = {
   state: State,
   setState: (stateLamda: (state: State) => State) => void,
+  ...
 };
 
 /**
@@ -29,11 +30,12 @@ export type PassProps<State> = {
  * usage.
  */
 function createContainer<Props: Object, State>(
-  Component: React.ComponentType<Props & {persister: PassProps<State>}>,
+  Component: React.ComponentType<Props & {persister: PassProps<State>, ...}>,
   spec: {
     cacheKeySuffix: (props: Props) => string,
     getInitialState: (props: Props) => State,
     version?: string,
+    ...
   },
 ): React.ComponentType<Props> {
   return class ComponentWithPersistedState extends React.Component<
diff --git a/ReactAndroid/src/androidTest/js/NativeIdTestModule.js b/ReactAndroid/src/androidTest/js/NativeIdTestModule.js
index cf4a67fe040..e03ff5ea338 100644
--- a/ReactAndroid/src/androidTest/js/NativeIdTestModule.js
+++ b/ReactAndroid/src/androidTest/js/NativeIdTestModule.js
@@ -30,7 +30,7 @@ const {
  * - The app renders fine
  * - The nativeID property is passed to the native views
  */
-class NativeIdTestApp extends React.Component<{}> {
+class NativeIdTestApp extends React.Component<{...}> {
   render(): React.Node {
     const uri =
       'data:image/gif;base64,' +
diff --git a/ReactCommon/hermes/inspector/tools/msggen/src/Converters.js b/ReactCommon/hermes/inspector/tools/msggen/src/Converters.js
index 65706c84351..8bed26b8ca1 100644
--- a/ReactCommon/hermes/inspector/tools/msggen/src/Converters.js
+++ b/ReactCommon/hermes/inspector/tools/msggen/src/Converters.js
@@ -18,7 +18,7 @@ export function toCppType(type: string): string {
   return type.substr(0, 1).toUpperCase() + type.substr(1);
 }
 
-const jsTypeMappings: {[key: string]: string} = {
+const jsTypeMappings: {[key: string]: string, ...} = {
   any: 'folly::dynamic',
   array: 'folly::dynamic',
   boolean: 'bool',
diff --git a/flow/console.js b/flow/console.js
index 4cb3f31f8cf..a3c431bc7ba 100644
--- a/flow/console.js
+++ b/flow/console.js
@@ -12,7 +12,12 @@ declare module 'console' {
   declare function assert(value: any, ...message: any): void;
   declare function dir(
     obj: Object,
-    options: {showHidden: boolean, depth: number, colors: boolean},
+    options: {
+      showHidden: boolean,
+      depth: number,
+      colors: boolean,
+      ...
+    },
   ): void;
   declare function error(...data: any): void;
   declare function info(...data: any): void;
@@ -26,7 +31,12 @@ declare module 'console' {
     assert(value: any, ...message: any): void;
     dir(
       obj: Object,
-      options: {showHidden: boolean, depth: number, colors: boolean},
+      options: {
+        showHidden: boolean,
+        depth: number,
+        colors: boolean,
+        ...
+      },
     ): void;
     error(...data: any): void;
     info(...data: any): void;
diff --git a/packages/react-native-codegen/e2e/__test_fixtures__/components/EventNestedObjectPropsNativeComponent.js b/packages/react-native-codegen/e2e/__test_fixtures__/components/EventNestedObjectPropsNativeComponent.js
index 7da2e19d6ae..65a4d1765a4 100644
--- a/packages/react-native-codegen/e2e/__test_fixtures__/components/EventNestedObjectPropsNativeComponent.js
+++ b/packages/react-native-codegen/e2e/__test_fixtures__/components/EventNestedObjectPropsNativeComponent.js
@@ -21,11 +21,10 @@ import type {HostComponent} from '../../../../../Libraries/Renderer/shims/ReactN
 
 type OnChangeEvent = $ReadOnly<{|
   location: {
-    source: {
-      url: string,
-    },
+    source: {url: string, ...},
     x: Int32,
     y: Int32,
+    ...
   },
 |}>;
 
diff --git a/packages/react-native-codegen/src/CodegenSchema.js b/packages/react-native-codegen/src/CodegenSchema.js
index 9f5f356fcc2..7d8375512b3 100644
--- a/packages/react-native-codegen/src/CodegenSchema.js
+++ b/packages/react-native-codegen/src/CodegenSchema.js
@@ -316,12 +316,12 @@ export type ComponentShape = $ReadOnly<{|
 export type SchemaType = $ReadOnly<{|
   modules: $ReadOnly<{
     [module: string]: $ReadOnly<{|
-      components?: $ReadOnly<{
-        [component: string]: ComponentShape,
-      }>,
+      components?: $ReadOnly<{[component: string]: ComponentShape, ...}>,
       nativeModules?: $ReadOnly<{
         [nativeModule: string]: NativeModuleShape,
+        ...,
       }>,
     |}>,
+    ...,
   }>,
 |}>;
diff --git a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js
index 981621c24f4..76f029bc7be 100644
--- a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js
+++ b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js
@@ -23,6 +23,7 @@ type FilesOutput = Map<string, string>;
 
 type ComponentCollection = $ReadOnly<{
   [component: string]: ComponentShape,
+  ...,
 }>;
 
 const template = `
diff --git a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js
index cbdba29cf16..104d4e9726f 100644
--- a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js
+++ b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js
@@ -31,6 +31,7 @@ type StructsMap = Map<string, string>;
 
 type ComponentCollection = $ReadOnly<{
   [component: string]: ComponentShape,
+  ...,
 }>;
 
 const template = `
diff --git a/packages/react-native-codegen/src/generators/modules/GenerateModuleMm.js b/packages/react-native-codegen/src/generators/modules/GenerateModuleMm.js
index da252113ffc..bd3949b2fb8 100644
--- a/packages/react-native-codegen/src/generators/modules/GenerateModuleMm.js
+++ b/packages/react-native-codegen/src/generators/modules/GenerateModuleMm.js
@@ -146,7 +146,7 @@ module.exports = {
     schema: SchemaType,
     moduleSpecName: string,
   ): FilesOutput {
-    const nativeModules: {[name: string]: NativeModuleShape} = Object.keys(
+    const nativeModules: {[name: string]: NativeModuleShape, ...} = Object.keys(
       schema.modules,
     )
       .map(moduleName => {
diff --git a/packages/react-native-codegen/src/parsers/flow/components/events.js b/packages/react-native-codegen/src/parsers/flow/components/events.js
index cdeb7d7c08d..bb748d48eec 100644
--- a/packages/react-native-codegen/src/parsers/flow/components/events.js
+++ b/packages/react-native-codegen/src/parsers/flow/components/events.js
@@ -212,6 +212,7 @@ type EventTypeAST = Object;
 type TypeMap = {
   // $FlowFixMe there's no flowtype for ASTs
   [string]: Object,
+  ...,
 };
 
 function getEvents(