diff --git a/Libraries/Animated/src/NativeAnimatedHelper.js b/Libraries/Animated/src/NativeAnimatedHelper.js
index 92143fec40e..1cff92883fd 100644
--- a/Libraries/Animated/src/NativeAnimatedHelper.js
+++ b/Libraries/Animated/src/NativeAnimatedHelper.js
@@ -31,7 +31,7 @@ let queueConnections = false;
 let queue = [];
 
 /**
- * Simple wrappers around NativeAnimatedModule to provide flow and autocmplete support for
+ * Simple wrappers around NativeAnimatedModule to provide flow and autocomplete support for
  * the native module methods
  */
 const API = {
diff --git a/Libraries/Animated/src/__tests__/bezier-test.js b/Libraries/Animated/src/__tests__/bezier-test.js
index e70026dca8d..bab93c372a4 100644
--- a/Libraries/Animated/src/__tests__/bezier-test.js
+++ b/Libraries/Animated/src/__tests__/bezier-test.js
@@ -115,7 +115,7 @@ describe('bezier', function() {
       });
     });
   });
-  describe('symetric curves', function() {
+  describe('symmetric curves', function() {
     it('should have a central value y~=0.5 at x=0.5', function() {
       repeat(10)(function() {
         const a = Math.random(),
diff --git a/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js b/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js
index 37425cd7652..667799a42f4 100644
--- a/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js
+++ b/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js
@@ -11,7 +11,7 @@
 
 /**
  * Dummy module that only exists for the sake of proving that the message queue
- * correctly dispatches to commonJS modules. The `testHook` is overriden by test
+ * correctly dispatches to commonJS modules. The `testHook` is overridden by test
  * cases.
  */
 const MessageQueueTestModule = {
diff --git a/Libraries/BatchedBridge/__tests__/MessageQueue-test.js b/Libraries/BatchedBridge/__tests__/MessageQueue-test.js
index 0c2db74b526..85c2ca97130 100644
--- a/Libraries/BatchedBridge/__tests__/MessageQueue-test.js
+++ b/Libraries/BatchedBridge/__tests__/MessageQueue-test.js
@@ -125,7 +125,7 @@ describe('MessageQueue', function() {
     expect(factory).toHaveBeenCalledTimes(1);
   });
 
-  it('should check if the global error handler is not overriden by the DebuggerInternal object', () => {
+  it('should check if the global error handler is not overridden by the DebuggerInternal object', () => {
     const dummyModule = {
       dummy: function() {},
     };
@@ -137,7 +137,7 @@ describe('MessageQueue', function() {
     expect(queue.__shouldPauseOnThrow).toHaveBeenCalledTimes(2);
   });
 
-  it('should check if the global error handler is overriden by the DebuggerInternal object', () => {
+  it('should check if the global error handler is overridden by the DebuggerInternal object', () => {
     const dummyModule = {
       dummy: function() {},
     };
diff --git a/Libraries/Components/ScrollView/ScrollView.js b/Libraries/Components/ScrollView/ScrollView.js
index afba54f5f2d..a16c4b49d23 100644
--- a/Libraries/Components/ScrollView/ScrollView.js
+++ b/Libraries/Components/ScrollView/ScrollView.js
@@ -532,7 +532,7 @@ export type Props = $ReadOnly<{|
    */
   snapToOffsets?: ?$ReadOnlyArray<number>,
   /**
-   * Use in conjuction with `snapToOffsets`. By default, the beginning
+   * Use in conjunction with `snapToOffsets`. By default, the beginning
    * of the list counts as a snap offset. Set `snapToStart` to false to disable
    * this behavior and allow the list to scroll freely between its start and
    * the first `snapToOffsets` offset.
@@ -540,7 +540,7 @@ export type Props = $ReadOnly<{|
    */
   snapToStart?: ?boolean,
   /**
-   * Use in conjuction with `snapToOffsets`. By default, the end
+   * Use in conjunction with `snapToOffsets`. By default, the end
    * of the list counts as a snap offset. Set `snapToEnd` to false to disable
    * this behavior and allow the list to scroll freely between its end and
    * the last `snapToOffsets` offset.
@@ -561,7 +561,7 @@ export type Props = $ReadOnly<{|
    *
    * See [RefreshControl](docs/refreshcontrol.html).
    */
-  // $FlowFixMe - how to handle generic type without existential opereator?
+  // $FlowFixMe - how to handle generic type without existential operator?
   refreshControl?: ?React.Element<any>,
   children?: React.Node,
 |}>;
diff --git a/Libraries/Components/StatusBar/StatusBar.js b/Libraries/Components/StatusBar/StatusBar.js
index 7617f77dbc1..42b40fc5e5e 100644
--- a/Libraries/Components/StatusBar/StatusBar.js
+++ b/Libraries/Components/StatusBar/StatusBar.js
@@ -377,7 +377,7 @@ class StatusBar extends React.Component<Props> {
     // Every time a StatusBar component is mounted, we push it's prop to a stack
     // and always update the native status bar with the props from the top of then
     // stack. This allows having multiple StatusBar components and the one that is
-    // added last or is deeper in the view hierachy will have priority.
+    // added last or is deeper in the view hierarchy will have priority.
     this._stackEntry = StatusBar.pushStackEntry(this.props);
   }
 
diff --git a/Libraries/Components/Touchable/TouchableOpacity.js b/Libraries/Components/Touchable/TouchableOpacity.js
index 5c5e96a0f68..8a052616c31 100644
--- a/Libraries/Components/Touchable/TouchableOpacity.js
+++ b/Libraries/Components/Touchable/TouchableOpacity.js
@@ -52,7 +52,7 @@ type Props = $ReadOnly<{|
  * On press down, the opacity of the wrapped view is decreased, dimming it.
  *
  * Opacity is controlled by wrapping the children in an Animated.View, which is
- * added to the view hiearchy.  Be aware that this can affect layout.
+ * added to the view hierarchy.  Be aware that this can affect layout.
  *
  * Example:
  *
diff --git a/Libraries/Components/UnimplementedViews/UnimplementedNativeViewNativeComponent.js b/Libraries/Components/UnimplementedViews/UnimplementedNativeViewNativeComponent.js
index ed0622ab428..f44691bb7bc 100644
--- a/Libraries/Components/UnimplementedViews/UnimplementedNativeViewNativeComponent.js
+++ b/Libraries/Components/UnimplementedViews/UnimplementedNativeViewNativeComponent.js
@@ -20,6 +20,6 @@ type NativeProps = $ReadOnly<{|
   name?: WithDefault<string, ''>,
 |}>;
 
-// NOTE: This compoenent is not implemented in paper
+// NOTE: This component is not implemented in paper
 // Do not require this file in paper builds
 export default codegenNativeComponent<NativeProps>('UnimplementedNativeView');
diff --git a/Libraries/Experimental/WindowedListView.js b/Libraries/Experimental/WindowedListView.js
index fd7af713bce..5684752ac5b 100644
--- a/Libraries/Experimental/WindowedListView.js
+++ b/Libraries/Experimental/WindowedListView.js
@@ -151,7 +151,7 @@ type State = {
 };
 class WindowedListView extends React.Component<Props, State> {
   /**
-   * Recomputing which rows to render is batched up and run asynchronously to avoid wastful updates,
+   * Recomputing which rows to render is batched up and run asynchronously to avoid wasteful updates,
    * e.g. from multiple layout updates in rapid succession.
    */
   _computeRowsToRenderBatcher: Batchinator;
@@ -390,7 +390,7 @@ class WindowedListView extends React.Component<Props, State> {
     }
     this._updateVisibleRows(firstVisible, lastVisible);
 
-    // Unfortuantely, we can't use <Incremental> to simplify our increment logic in this function
+    // Unfortunately, we can't use <Incremental> to simplify our increment logic in this function
     // because we need to make sure that cells are rendered in the right order one at a time when
     // scrolling back up.
 
@@ -646,7 +646,7 @@ type CellProps = {
    * after offscreen rendering has completed, includeInLayout will be set true and the finished cell
    * can be dropped into place.
    *
-   * This is coordinated outside this component so the parent can syncronize this re-render with
+   * This is coordinated outside this component so the parent can synchronize this re-render with
    * managing the placeholder sizing.
    */
   includeInLayout: boolean,
@@ -656,7 +656,7 @@ type CellProps = {
    */
   onNewLayout: (params: {rowKey: string, layout: Object}) => void,
   /**
-   * Used to track when rendering is in progress so the parent can avoid wastedful re-renders that
+   * Used to track when rendering is in progress so the parent can avoid wasteful re-renders that
    * are just going to be invalidated once the cell finishes.
    */
   onProgressChange: (progress: {rowKey: string, inProgress: boolean}) => void,
diff --git a/Libraries/Image/RCTImageLoader.m b/Libraries/Image/RCTImageLoader.m
index 13a485f4122..6b73c03b844 100644
--- a/Libraries/Image/RCTImageLoader.m
+++ b/Libraries/Image/RCTImageLoader.m
@@ -136,7 +136,7 @@ RCT_EXPORT_MODULE()
 - (void)setImageCache:(id<RCTImageCache>)cache
 {
   if (_imageCache) {
-    RCTLogWarn(@"RCTImageCache was already set and has now been overriden.");
+    RCTLogWarn(@"RCTImageCache was already set and has now been overridden.");
   }
   _imageCache = cache;
 }
diff --git a/Libraries/Interaction/__tests__/InteractionManager-test.js b/Libraries/Interaction/__tests__/InteractionManager-test.js
index 83e7ca36164..a9abd62f5c6 100644
--- a/Libraries/Interaction/__tests__/InteractionManager-test.js
+++ b/Libraries/Interaction/__tests__/InteractionManager-test.js
@@ -16,7 +16,7 @@ jest
 
 const isWindows = process.platform === 'win32';
 function expectToBeCalledOnce(fn) {
-  // todo fix this test case on widnows
+  // todo fix this test case on windows
   if (isWindows) {
     return;
   }
diff --git a/Libraries/Lists/VirtualizedList.js b/Libraries/Lists/VirtualizedList.js
index 1a43b19eefb..939aceee6ff 100644
--- a/Libraries/Lists/VirtualizedList.js
+++ b/Libraries/Lists/VirtualizedList.js
@@ -1180,7 +1180,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
       if (!this._scrollRef) {
         return;
       }
-      // We are asuming that getOutermostParentListRef().getScrollRef()
+      // We are assuming that getOutermostParentListRef().getScrollRef()
       // is a non-null reference to a ScrollView
       this._scrollRef.measureLayout(
         this.context.virtualizedList
diff --git a/Libraries/Lists/__tests__/VirtualizeUtils-test.js b/Libraries/Lists/__tests__/VirtualizeUtils-test.js
index fe67ef79fff..86125a3a29b 100644
--- a/Libraries/Lists/__tests__/VirtualizeUtils-test.js
+++ b/Libraries/Lists/__tests__/VirtualizeUtils-test.js
@@ -34,7 +34,7 @@ describe('newRangeCount', function() {
   it('handles front extension', function() {
     expect(newRangeCount({first: 1, last: 4}, {first: 0, last: 4})).toBe(1);
   });
-  it('handles forward insersect', function() {
+  it('handles forward intersect', function() {
     expect(newRangeCount({first: 1, last: 4}, {first: 3, last: 6})).toBe(2);
   });
   it('handles reverse intersect', function() {
diff --git a/Libraries/Modal/Modal.js b/Libraries/Modal/Modal.js
index 46466eb4b2a..726255b131f 100644
--- a/Libraries/Modal/Modal.js
+++ b/Libraries/Modal/Modal.js
@@ -169,7 +169,7 @@ class Modal extends React.Component<Props> {
 
   getChildContext() {
     // Reset the context so VirtualizedList doesn't get confused by nesting
-    // in the React tree that doesn't reflect the native component heirarchy.
+    // in the React tree that doesn't reflect the native component hierarchy.
     return {
       virtualizedList: null,
     };
diff --git a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h
index 376f9e60268..b6ad4c1d73d 100644
--- a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h
@@ -31,7 +31,7 @@
 - (void)setNeedsUpdate NS_REQUIRES_SUPER;
 
 /**
- * The node will update its value if necesarry and only after its parents have updated.
+ * The node will update its value if necessary and only after its parents have updated.
  */
 - (void)updateNodeIfNecessary NS_REQUIRES_SUPER;
 
diff --git a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m
index 6f61e084a47..f8582a86452 100644
--- a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m
@@ -110,7 +110,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
 - (void)performUpdate
 {
   _needsUpdate = NO;
-  // To be overidden by subclasses
+  // To be overridden by subclasses
   // This method is called on a node only if it has been marked for update
   // during the current update loop
 }
diff --git a/Libraries/NativeAnimation/RCTNativeAnimatedModule.m b/Libraries/NativeAnimation/RCTNativeAnimatedModule.m
index cbaa41509b8..048ae22c223 100644
--- a/Libraries/NativeAnimation/RCTNativeAnimatedModule.m
+++ b/Libraries/NativeAnimation/RCTNativeAnimatedModule.m
@@ -14,7 +14,7 @@ typedef void (^AnimatedOperation)(RCTNativeAnimatedNodesManager *nodesManager);
 {
   RCTNativeAnimatedNodesManager *_nodesManager;
 
-  // Oparations called after views have been updated.
+  // Operations called after views have been updated.
   NSMutableArray<AnimatedOperation> *_operations;
   // Operations called before views have been updated.
   NSMutableArray<AnimatedOperation> *_preOperations;
diff --git a/Libraries/Renderer/implementations/ReactFabric-dev.fb.js b/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
index fe7c273e59e..4f152f78777 100644
--- a/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
+++ b/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
@@ -9975,7 +9975,7 @@ function updateReducer(reducer, initialArg, init) {
         }
 
         hook.memoizedState = newState;
-        // Don't persist the state accumlated from the render phase updates to
+        // Don't persist the state accumulated from the render phase updates to
         // the base state unless the queue is empty.
         // TODO: Not sure if this is the desired semantics, but it's what we
         // do for gDSFP. I can't remember why.
@@ -14233,7 +14233,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       }
 
       if (nextDidTimeout && !prevDidTimeout) {
-        // If this subtreee is running in concurrent mode we can suspend,
+        // If this subtree is running in concurrent mode we can suspend,
         // otherwise we won't suspend.
         // TODO: This will still suspend a synchronous tree if anything
         // in the concurrent tree already suspended during this render.
@@ -14247,7 +14247,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if not prevDidTimeout.
         if (nextDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children.
           workInProgress.effectTag |= Update;
         }
@@ -14256,7 +14256,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if these values are non equal, i.e. it changed.
         if (nextDidTimeout || prevDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children. In mutation mode, we also need the flag to
           // *unhide* children that were previously hidden, so check if the
           // is currently timed out, too.
@@ -15901,7 +15901,7 @@ function throwException(
               sourceFiber.tag = IncompleteClassComponent;
             } else {
               // When we try rendering again, we should not reuse the current fiber,
-              // since it's known to be in an inconsistent state. Use a force updte to
+              // since it's known to be in an inconsistent state. Use a force update to
               // prevent a bail out.
               var update = createUpdate(Sync);
               update.tag = ForceUpdate;
@@ -16291,7 +16291,7 @@ function scheduleUpdateOnFiber(fiber, expirationTime) {
         // Flush the synchronous work now, wnless we're already working or inside
         // a batch. This is intentionally inside scheduleUpdateOnFiber instead of
         // scheduleCallbackForFiber to preserve the ability to schedule a callback
-        // without immediately flushing it. We only do this for user-initated
+        // without immediately flushing it. We only do this for user-initiated
         // updates, to preserve historical behavior of sync mode.
         flushImmediateQueue();
       }
@@ -16758,7 +16758,7 @@ function renderRoot(root, expirationTime, isSync) {
       if (!isSync) {
         // If we're rendering asynchronously, it's possible the error was
         // caused by tearing due to a mutation during an event. Try rendering
-        // one more time without yiedling to events.
+        // one more time without yielding to events.
         prepareFreshStack(root, expirationTime);
         scheduleCallback(
           ImmediatePriority,
diff --git a/Libraries/Renderer/implementations/ReactFabric-dev.js b/Libraries/Renderer/implementations/ReactFabric-dev.js
index e80eac23729..bf5bf2e2634 100644
--- a/Libraries/Renderer/implementations/ReactFabric-dev.js
+++ b/Libraries/Renderer/implementations/ReactFabric-dev.js
@@ -9971,7 +9971,7 @@ function updateReducer(reducer, initialArg, init) {
         }
 
         hook.memoizedState = newState;
-        // Don't persist the state accumlated from the render phase updates to
+        // Don't persist the state accumulated from the render phase updates to
         // the base state unless the queue is empty.
         // TODO: Not sure if this is the desired semantics, but it's what we
         // do for gDSFP. I can't remember why.
@@ -14229,7 +14229,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       }
 
       if (nextDidTimeout && !prevDidTimeout) {
-        // If this subtreee is running in concurrent mode we can suspend,
+        // If this subtree is running in concurrent mode we can suspend,
         // otherwise we won't suspend.
         // TODO: This will still suspend a synchronous tree if anything
         // in the concurrent tree already suspended during this render.
@@ -14243,7 +14243,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if not prevDidTimeout.
         if (nextDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children.
           workInProgress.effectTag |= Update;
         }
@@ -14252,7 +14252,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if these values are non equal, i.e. it changed.
         if (nextDidTimeout || prevDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children. In mutation mode, we also need the flag to
           // *unhide* children that were previously hidden, so check if the
           // is currently timed out, too.
@@ -15897,7 +15897,7 @@ function throwException(
               sourceFiber.tag = IncompleteClassComponent;
             } else {
               // When we try rendering again, we should not reuse the current fiber,
-              // since it's known to be in an inconsistent state. Use a force updte to
+              // since it's known to be in an inconsistent state. Use a force update to
               // prevent a bail out.
               var update = createUpdate(Sync);
               update.tag = ForceUpdate;
@@ -16287,7 +16287,7 @@ function scheduleUpdateOnFiber(fiber, expirationTime) {
         // Flush the synchronous work now, wnless we're already working or inside
         // a batch. This is intentionally inside scheduleUpdateOnFiber instead of
         // scheduleCallbackForFiber to preserve the ability to schedule a callback
-        // without immediately flushing it. We only do this for user-initated
+        // without immediately flushing it. We only do this for user-initiated
         // updates, to preserve historical behavior of sync mode.
         flushImmediateQueue();
       }
@@ -16754,7 +16754,7 @@ function renderRoot(root, expirationTime, isSync) {
       if (!isSync) {
         // If we're rendering asynchronously, it's possible the error was
         // caused by tearing due to a mutation during an event. Try rendering
-        // one more time without yiedling to events.
+        // one more time without yielding to events.
         prepareFreshStack(root, expirationTime);
         scheduleCallback(
           ImmediatePriority,
diff --git a/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js b/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
index 39549939d1f..1e808ddf484 100644
--- a/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
+++ b/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
@@ -10290,7 +10290,7 @@ function updateReducer(reducer, initialArg, init) {
         }
 
         hook.memoizedState = newState;
-        // Don't persist the state accumlated from the render phase updates to
+        // Don't persist the state accumulated from the render phase updates to
         // the base state unless the queue is empty.
         // TODO: Not sure if this is the desired semantics, but it's what we
         // do for gDSFP. I can't remember why.
@@ -14548,7 +14548,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       }
 
       if (nextDidTimeout && !prevDidTimeout) {
-        // If this subtreee is running in concurrent mode we can suspend,
+        // If this subtree is running in concurrent mode we can suspend,
         // otherwise we won't suspend.
         // TODO: This will still suspend a synchronous tree if anything
         // in the concurrent tree already suspended during this render.
@@ -14562,7 +14562,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if not prevDidTimeout.
         if (nextDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children.
           workInProgress.effectTag |= Update;
         }
@@ -14571,7 +14571,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if these values are non equal, i.e. it changed.
         if (nextDidTimeout || prevDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children. In mutation mode, we also need the flag to
           // *unhide* children that were previously hidden, so check if the
           // is currently timed out, too.
@@ -16215,7 +16215,7 @@ function throwException(
               sourceFiber.tag = IncompleteClassComponent;
             } else {
               // When we try rendering again, we should not reuse the current fiber,
-              // since it's known to be in an inconsistent state. Use a force updte to
+              // since it's known to be in an inconsistent state. Use a force update to
               // prevent a bail out.
               var update = createUpdate(Sync);
               update.tag = ForceUpdate;
@@ -16605,7 +16605,7 @@ function scheduleUpdateOnFiber(fiber, expirationTime) {
         // Flush the synchronous work now, wnless we're already working or inside
         // a batch. This is intentionally inside scheduleUpdateOnFiber instead of
         // scheduleCallbackForFiber to preserve the ability to schedule a callback
-        // without immediately flushing it. We only do this for user-initated
+        // without immediately flushing it. We only do this for user-initiated
         // updates, to preserve historical behavior of sync mode.
         flushImmediateQueue();
       }
@@ -17072,7 +17072,7 @@ function renderRoot(root, expirationTime, isSync) {
       if (!isSync) {
         // If we're rendering asynchronously, it's possible the error was
         // caused by tearing due to a mutation during an event. Try rendering
-        // one more time without yiedling to events.
+        // one more time without yielding to events.
         prepareFreshStack(root, expirationTime);
         scheduleCallback(
           ImmediatePriority,
diff --git a/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js b/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js
index 80543677439..18c851787d1 100644
--- a/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js
+++ b/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js
@@ -10286,7 +10286,7 @@ function updateReducer(reducer, initialArg, init) {
         }
 
         hook.memoizedState = newState;
-        // Don't persist the state accumlated from the render phase updates to
+        // Don't persist the state accumulated from the render phase updates to
         // the base state unless the queue is empty.
         // TODO: Not sure if this is the desired semantics, but it's what we
         // do for gDSFP. I can't remember why.
@@ -14544,7 +14544,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       }
 
       if (nextDidTimeout && !prevDidTimeout) {
-        // If this subtreee is running in concurrent mode we can suspend,
+        // If this subtree is running in concurrent mode we can suspend,
         // otherwise we won't suspend.
         // TODO: This will still suspend a synchronous tree if anything
         // in the concurrent tree already suspended during this render.
@@ -14558,7 +14558,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if not prevDidTimeout.
         if (nextDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children.
           workInProgress.effectTag |= Update;
         }
@@ -14567,7 +14567,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
         // TODO: Only schedule updates if these values are non equal, i.e. it changed.
         if (nextDidTimeout || prevDidTimeout) {
           // If this boundary just timed out, schedule an effect to attach a
-          // retry listener to the proimse. This flag is also used to hide the
+          // retry listener to the promise. This flag is also used to hide the
           // primary children. In mutation mode, we also need the flag to
           // *unhide* children that were previously hidden, so check if the
           // is currently timed out, too.
@@ -16211,7 +16211,7 @@ function throwException(
               sourceFiber.tag = IncompleteClassComponent;
             } else {
               // When we try rendering again, we should not reuse the current fiber,
-              // since it's known to be in an inconsistent state. Use a force updte to
+              // since it's known to be in an inconsistent state. Use a force update to
               // prevent a bail out.
               var update = createUpdate(Sync);
               update.tag = ForceUpdate;
@@ -16601,7 +16601,7 @@ function scheduleUpdateOnFiber(fiber, expirationTime) {
         // Flush the synchronous work now, wnless we're already working or inside
         // a batch. This is intentionally inside scheduleUpdateOnFiber instead of
         // scheduleCallbackForFiber to preserve the ability to schedule a callback
-        // without immediately flushing it. We only do this for user-initated
+        // without immediately flushing it. We only do this for user-initiated
         // updates, to preserve historical behavior of sync mode.
         flushImmediateQueue();
       }
@@ -17068,7 +17068,7 @@ function renderRoot(root, expirationTime, isSync) {
       if (!isSync) {
         // If we're rendering asynchronously, it's possible the error was
         // caused by tearing due to a mutation during an event. Try rendering
-        // one more time without yiedling to events.
+        // one more time without yielding to events.
         prepareFreshStack(root, expirationTime);
         scheduleCallback(
           ImmediatePriority,
diff --git a/Libraries/StyleSheet/StyleSheet.js b/Libraries/StyleSheet/StyleSheet.js
index 2692dd5892e..3c3352e37df 100644
--- a/Libraries/StyleSheet/StyleSheet.js
+++ b/Libraries/StyleSheet/StyleSheet.js
@@ -279,7 +279,7 @@ module.exports = {
    * > **NOTE**: Exercise caution as abusing this can tax you in terms of
    * > optimizations.
    * >
-   * > IDs enable optimizations through the bridge and memory in general. Refering
+   * > IDs enable optimizations through the bridge and memory in general. Referring
    * > to style objects directly will deprive you of these optimizations.
    *
    * Example:
diff --git a/Libraries/StyleSheet/__tests__/normalizeColor-test.js b/Libraries/StyleSheet/__tests__/normalizeColor-test.js
index 974fa5ef995..094bd0a812c 100644
--- a/Libraries/StyleSheet/__tests__/normalizeColor-test.js
+++ b/Libraries/StyleSheet/__tests__/normalizeColor-test.js
@@ -28,7 +28,7 @@ describe('normalizeColor', function() {
     expect(normalizeColor(0xffffffff + 1)).toBe(null);
   });
 
-  it('should temporarly accept floating point values for rgb', function() {
+  it('should temporarily accept floating point values for rgb', function() {
     expect(normalizeColor('rgb(1.1, 2.1, 3.1)')).toBe(0x010203ff);
     expect(normalizeColor('rgba(1.1, 2.1, 3.1, 1.0)')).toBe(0x010203ff);
   });
diff --git a/Libraries/Text/RCTTextAttributes.m b/Libraries/Text/RCTTextAttributes.m
index ceefb2e49df..fe815c393f1 100644
--- a/Libraries/Text/RCTTextAttributes.m
+++ b/Libraries/Text/RCTTextAttributes.m
@@ -37,7 +37,7 @@ NSString *const RCTTextAttributesTagAttributeName = @"RCTTextAttributesTagAttrib
 
 - (void)applyTextAttributes:(RCTTextAttributes *)textAttributes
 {
-  // Note: All lines marked with `*` does not use explicit/correct rules to compare old and new values becuase
+  // Note: All lines marked with `*` does not use explicit/correct rules to compare old and new values because
   // their types do not have special designated value representing undefined/unspecified/inherit meaning.
   // We will address this in the future.
 
diff --git a/Libraries/Text/Text/RCTTextShadowView.m b/Libraries/Text/Text/RCTTextShadowView.m
index a1243e3243c..50007186bd4 100644
--- a/Libraries/Text/Text/RCTTextShadowView.m
+++ b/Libraries/Text/Text/RCTTextShadowView.m
@@ -116,7 +116,7 @@
       [descendantViews addObject:descendantView];
     }];
 
-    // Removing all references to Shadow Views to avoid unnececery retainning.
+    // Removing all references to Shadow Views to avoid unnecessary retaining.
     [textStorage removeAttribute:RCTBaseTextShadowViewEmbeddedShadowViewAttributeName range:NSMakeRange(0, textStorage.length)];
 
     [textView setTextStorage:textStorage
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m b/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m
index c6cc08bb8bf..65ff83dd9fb 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m
@@ -137,7 +137,7 @@
   NSMutableAttributedString *attributedText =
     [[NSMutableAttributedString alloc] initWithAttributedString:[self attributedTextWithBaseTextAttributes:nil]];
 
-  // Removing all references to Shadow Views and tags to avoid unnececery retainning
+  // Removing all references to Shadow Views and tags to avoid unnecessary retaining
   // and problems with comparing the strings.
   [attributedText removeAttribute:RCTBaseTextShadowViewEmbeddedShadowViewAttributeName
                             range:NSMakeRange(0, attributedText.length)];
@@ -195,7 +195,7 @@
 
   if (attributedText.length == 0) {
     // It's impossible to measure empty attributed string because all attributes are
-    // assosiated with some characters, so no characters means no data.
+    // associated with some characters, so no characters means no data.
 
     // Placeholder also can represent the intrinsic size when it is visible.
     NSString *text = self.placeholder;
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputView.m b/Libraries/Text/TextInput/RCTBaseTextInputView.m
index c82c7b8142e..9fb8fab726f 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputView.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputView.m
@@ -93,13 +93,13 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithFrame:(CGRect)frame)
 }
 
 - (BOOL)textOf:(NSAttributedString*)newText equals:(NSAttributedString*)oldText{
-  // When the dictation is running we can't update the attibuted text on the backed up text view
+  // When the dictation is running we can't update the attributed text on the backed up text view
   // because setting the attributed string will kill the dictation. This means that we can't impose
   // the settings on a dictation.
   // Similarly, when the user is in the middle of inputting some text in Japanese/Chinese, there will be styling on the
   // text that we should disregard. See https://developer.apple.com/documentation/uikit/uitextinput/1614489-markedtextrange?language=objc
   // for more info.
-  // If the user added an emoji, the sytem adds a font attribute for the emoji and stores the original font in NSOriginalFont.
+  // If the user added an emoji, the system adds a font attribute for the emoji and stores the original font in NSOriginalFont.
   // Lastly, when entering a password, etc., there will be additional styling on the field as the native text view
   // handles showing the last character for a split second.
   __block BOOL fontHasBeenUpdatedBySystem = false;
diff --git a/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js b/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js
index 2895c46ef34..ef5cc10d42d 100644
--- a/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js
+++ b/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js
@@ -187,7 +187,7 @@ describe('buildStyleInterpolator', function() {
       });
     });
   });
-  it('should detect chnages correctly', function() {
+  it('should detect changes correctly', function() {
     const testAnim = {
       opacity: {
         from: 0,
diff --git a/Libraries/Utilities/createPerformanceLogger.js b/Libraries/Utilities/createPerformanceLogger.js
index 589998241d2..0e27a9c0e73 100644
--- a/Libraries/Utilities/createPerformanceLogger.js
+++ b/Libraries/Utilities/createPerformanceLogger.js
@@ -51,7 +51,7 @@ const _cookies: {[key: string]: number} = {};
 const PRINT_TO_CONSOLE: false = false; // Type as false to prevent accidentally committing `true`;
 
 /**
- * This function creates peformance loggers that can be used to collect and log
+ * This function creates performance loggers that can be used to collect and log
  * various performance data such as timespans, points and extras.
  * The loggers need to have minimal overhead since they're used in production.
  */
diff --git a/Libraries/Wrapper/RCTWrapperView.m b/Libraries/Wrapper/RCTWrapperView.m
index af24bb6e95f..6fc328d0eba 100644
--- a/Libraries/Wrapper/RCTWrapperView.m
+++ b/Libraries/Wrapper/RCTWrapperView.m
@@ -74,7 +74,7 @@
   [super invalidateIntrinsicContentSize];
 
   // Setting `intrinsicContentSize` dirties the Yoga node and
-  // enfoce Yoga to call `measure` function (backed to `measureBlock`).
+  // enforce Yoga to call `measure` function (backed to `measureBlock`).
   [_bridge.uiManager setIntrinsicContentSize:self.intrinsicContentSize forView:self];
 }
 
diff --git a/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js b/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js
index 35a6dc9b8cf..fb154371730 100644
--- a/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js
+++ b/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js
@@ -185,7 +185,7 @@ describe('YellowBoxRegistry', () => {
     expect(observer.mock.calls[0][0]).toBe(registry());
   });
 
-  it('sends batched updates asynchoronously', () => {
+  it('sends batched updates asynchronously', () => {
     const {observer} = observe();
     expect(observer.mock.calls.length).toBe(1);
 
diff --git a/RNTester/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h b/RNTester/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
index 501d5b64590..84963de46d1 100644
--- a/RNTester/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
+++ b/RNTester/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
@@ -55,7 +55,7 @@ extern NSString *const FBReferenceImageFilePathKey;
  Performs the comparison of the view.
  @param view The view to snapshot.
  @param selector selector
- @param identifier An optional identifier, used is there are muliptle snapshot tests in a given -test method.
+ @param identifier An optional identifier, used is there are multiple snapshot tests in a given -test method.
  @param errorPtr An error to log in an XCTAssert() macro if the method fails (missing reference image, images differ, etc).
  @returns YES if the comparison (or saving of the reference image) succeeded.
  */
diff --git a/RNTester/RNTesterUnitTests/RCTAllocationTests.m b/RNTester/RNTesterUnitTests/RCTAllocationTests.m
index ffff8cfdda6..df95cfaff05 100644
--- a/RNTester/RNTesterUnitTests/RCTAllocationTests.m
+++ b/RNTester/RNTesterUnitTests/RCTAllocationTests.m
@@ -176,7 +176,7 @@ RCT_EXPORT_METHOD(test:(__unused NSString *)a
 /**
  * T42930872:
  *
- * Both bridge invalidation and bridge setUp occurr execute concurrently.
+ * Both bridge invalidation and bridge setUp occur execute concurrently.
  * Therefore, it's not safe for us to create a bridge, and immediately reload on
  * it. It's also unsafe to just reload the bridge, because that calls invalidate
  * and then setUp. Because of these race conditions, this test may randomly
diff --git a/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m b/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m
index 223dc13b811..3b1155e25da 100644
--- a/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m
+++ b/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m
@@ -1031,7 +1031,7 @@ static id RCTPropChecker(NSString *prop, NSNumber *value)
  */
 - (void) testSpringTrackingRetainsSpeed
 {
-  // this spring config correspomds to tension 20 and friction 0.5 which makes the spring settle
+  // this spring config corresponds to tension 20 and friction 0.5 which makes the spring settle
   // very slowly
   NSDictionary *springConfig = @{@"type": @"spring",
                                  @"restSpeedThreshold": @0.001,
diff --git a/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExTilt.js b/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExTilt.js
index 95f5117771f..005177a8196 100644
--- a/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExTilt.js
+++ b/RNTester/js/examples/Animated/AnimatedGratuitousApp/AnExTilt.js
@@ -67,7 +67,7 @@ class AnExTilt extends React.Component<Object, any> {
   _startBurnsZoom() {
     this.state.burns.setValue(1); // reset to beginning
     Animated.decay(this.state.burns, {
-      velocity: 1, // sublte zoom
+      velocity: 1, // subtle zoom
       deceleration: 0.9999, // slow decay
     }).start();
   }
diff --git a/RNTester/js/examples/Timer/TimerExample.js b/RNTester/js/examples/Timer/TimerExample.js
index 59a792b6b46..b0a0ce8223f 100644
--- a/RNTester/js/examples/Timer/TimerExample.js
+++ b/RNTester/js/examples/Timer/TimerExample.js
@@ -208,7 +208,7 @@ class TimerTester extends React.Component<TimerTesterProps> {
           this._immediateId = setImmediate(this._run);
         };
       } else if (this.props.type === 'setInterval') {
-        this._iters = 30; // Only used for forceUpdate periodicidy
+        this._iters = 30; // Only used for forceUpdate periodicity
         this._timerFn = null;
         this._intervalId = setInterval(this._run, this.props.dt);
       }
diff --git a/React/Base/RCTBridge.h b/React/Base/RCTBridge.h
index a58ecb8113f..969035b5a94 100644
--- a/React/Base/RCTBridge.h
+++ b/React/Base/RCTBridge.h
@@ -112,7 +112,7 @@ RCT_EXTERN NSString *const RCTBridgeDidDownloadScriptNotificationBridgeDescripti
 /**
  * This block can be used to instantiate modules that require additional
  * init parameters, or additional configuration prior to being used.
- * The bridge will call this block to instatiate the modules, and will
+ * The bridge will call this block to instantiate the modules, and will
  * be responsible for invalidating/releasing them when the bridge is destroyed.
  * For this reason, the block should always return new module instances, and
  * module instances should not be shared between bridges.
@@ -180,7 +180,7 @@ RCT_EXTERN void RCTEnableTurboModule(BOOL enabled);
 /**
  * Retrieve a bridge module instance by name or class. Note that modules are
  * lazily instantiated, so calling these methods for the first time with a given
- * module name/class may cause the class to be sychronously instantiated,
+ * module name/class may cause the class to be synchronously instantiated,
  * potentially blocking both the calling thread and main thread for a short time.
  *
  * Note: This method does NOT lazily load the particular module if it's not yet loaded.
@@ -198,7 +198,7 @@ RCT_EXTERN void RCTEnableTurboModule(BOOL enabled);
 
 /**
  * Convenience method for retrieving all modules conforming to a given protocol.
- * Modules will be sychronously instantiated if they haven't already been,
+ * Modules will be synchronously instantiated if they haven't already been,
  * potentially blocking both the calling thread and main thread for a short time.
  */
 - (NSArray *)modulesConformingToProtocol:(Protocol *)protocol;
diff --git a/React/Base/RCTBridgeModule.h b/React/Base/RCTBridgeModule.h
index 54a27802cbd..8d95f4d9110 100644
--- a/React/Base/RCTBridgeModule.h
+++ b/React/Base/RCTBridgeModule.h
@@ -291,7 +291,7 @@ RCT_CONCAT(initialize_, objc_name)() { RCTRegisterModule([objc_name class]); }
  * Most modules can be used from any thread. All of the modules exported non-sync method will be called on its
  * methodQueue, and the module will be constructed lazily when its first invoked. Some modules have main need to access
  * information that's main queue only (e.g. most UIKit classes). Since we don't want to dispatch synchronously to the
- * main thread to this safely, we construct these moduels and export their constants ahead-of-time.
+ * main thread to this safely, we construct these modules and export their constants ahead-of-time.
  *
  * Note that when set to false, the module constructor will be called from any thread.
  *
diff --git a/React/Base/RCTComponentEvent.h b/React/Base/RCTComponentEvent.h
index 28c94074c57..443fadca038 100644
--- a/React/Base/RCTComponentEvent.h
+++ b/React/Base/RCTComponentEvent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) Facebook, Inc. and its affilities.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTComponentEvent.m b/React/Base/RCTComponentEvent.m
index 0708bac857e..74c344575e6 100644
--- a/React/Base/RCTComponentEvent.m
+++ b/React/Base/RCTComponentEvent.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) Facebook, Inc. and its affilities.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTModuleData.mm b/React/Base/RCTModuleData.mm
index f52d3ae107b..024e7a3cd42 100644
--- a/React/Base/RCTModuleData.mm
+++ b/React/Base/RCTModuleData.mm
@@ -124,7 +124,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init);
         _instance = _moduleProvider ? _moduleProvider() : nil;
         RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
         if (!_instance) {
-          // Module init returned nil, probably because automatic instantatiation
+          // Module init returned nil, probably because automatic instantiation
           // of the module is not supported, and it is supposed to be passed in to
           // the bridge constructor. Mark setup complete to avoid doing more work.
           _setupComplete = YES;
diff --git a/React/Base/RCTModuleMethod.mm b/React/Base/RCTModuleMethod.mm
index 12a5b197ce2..d6fc7d5344e 100644
--- a/React/Base/RCTModuleMethod.mm
+++ b/React/Base/RCTModuleMethod.mm
@@ -429,7 +429,7 @@ RCT_EXTERN_C_END
           }
           if (isNullableType) {
             // Check converted value wasn't null either, as method probably
-            // won't gracefully handle a nil vallue for a nonull argument
+            // won't gracefully handle a nil value for a nonull argument
             void *value;
             [invocation getArgument:&value atIndex:index + 2];
             if (value == NULL) {
diff --git a/React/Base/RCTRootView.h b/React/Base/RCTRootView.h
index 7ef03775aab..920cf6a2f5e 100644
--- a/React/Base/RCTRootView.h
+++ b/React/Base/RCTRootView.h
@@ -144,7 +144,7 @@ NSString *const RCTContentDidAppearNotification;
  * The intrinsic size of the root view's content. This is set right before the
  * `rootViewDidChangeIntrinsicSize` method of `RCTRootViewDelegate` is called.
  * This property is deprecated and will be removed in next releases.
- * Use UIKit `intrinsicContentSize` propery instead.
+ * Use UIKit `intrinsicContentSize` property instead.
  */
 @property (readonly, nonatomic, assign) CGSize intrinsicSize
 __deprecated_msg("Use `intrinsicContentSize` instead.");
diff --git a/React/Base/RCTRootViewDelegate.h b/React/Base/RCTRootViewDelegate.h
index bd3a4f9ac0c..9bd24fa0716 100644
--- a/React/Base/RCTRootViewDelegate.h
+++ b/React/Base/RCTRootViewDelegate.h
@@ -23,7 +23,7 @@
  * `setNeedsLayout` for its superview which in its turn will trigger relayout.
  *
  * The new intrinsic content size is available via the `intrinsicContentSize`
- * propery of the root view. The view will not resize itself.
+ * property of the root view. The view will not resize itself.
  */
 - (void)rootViewDidChangeIntrinsicSize:(RCTRootView *)rootView;
 
diff --git a/React/Base/RCTTouchHandler.m b/React/Base/RCTTouchHandler.m
index dee8526e174..ceca86bbaf3 100644
--- a/React/Base/RCTTouchHandler.m
+++ b/React/Base/RCTTouchHandler.m
@@ -234,11 +234,11 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithTarget:(id)target action:(SEL)action
 }
 
 /***
- * To ensure compatibilty when using UIManager.measure and RCTTouchHandler, we have to adopt
+ * To ensure compatibility when using UIManager.measure and RCTTouchHandler, we have to adopt
  * UIManager.measure's behavior in finding a "root view".
  * Usually RCTTouchHandler is already attached to a root view but in some cases (e.g. Modal),
  * we are instead attached to some RCTView subtree. This is also the case when embedding some RN
- * views inside a seperate ViewController not controlled by RN.
+ * views inside a separate ViewController not controlled by RN.
  * This logic will either find the nearest rootView, or go all the way to the UIWindow.
  * While this is not optimal, it is exactly what UIManager.measure does, and what Touchable.js
  * relies on.
diff --git a/React/Base/Surface/RCTSurface.mm b/React/Base/Surface/RCTSurface.mm
index 739caaf91a0..21f42671670 100644
--- a/React/Base/Surface/RCTSurface.mm
+++ b/React/Base/Surface/RCTSurface.mm
@@ -109,7 +109,7 @@
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
-#pragma mark - Immutable Properties (no need to enforce synchonization)
+#pragma mark - Immutable Properties (no need to enforce synchronization)
 
 - (RCTBridge *)bridge
 {
@@ -126,7 +126,7 @@
   return _rootViewTag;
 }
 
-#pragma mark - Convinience Internal Thread-Safe Properties
+#pragma mark - Convenience Internal Thread-Safe Properties
 
 - (RCTBridge *)_batchedBridge
 {
@@ -173,7 +173,7 @@
   }
 
   RCTAssert([rootView isKindOfClass:[RCTSurfaceRootView class]],
-    @"Received root view is not an instanse of `RCTSurfaceRootView`.");
+    @"Received root view is not an instance of `RCTSurfaceRootView`.");
 
   if (rootView.superview != view) {
     view.rootView = rootView;
@@ -339,7 +339,7 @@
     RCTSurfaceRootShadowView *rootShadowView =
       (RCTSurfaceRootShadowView *)[uiManager shadowViewForReactTag:self->_rootViewTag];
     RCTAssert([rootShadowView isKindOfClass:[RCTSurfaceRootShadowView class]],
-      @"Received shadow view is not an instanse of `RCTSurfaceRootShadowView`.");
+      @"Received shadow view is not an instance of `RCTSurfaceRootShadowView`.");
 
     [rootShadowView setMinimumSize:minimumSize
                        maximumSize:maximumSize];
@@ -360,7 +360,7 @@
       (RCTSurfaceRootShadowView *)[uiManager shadowViewForReactTag:self->_rootViewTag];
 
     RCTAssert([rootShadowView isKindOfClass:[RCTSurfaceRootShadowView class]],
-      @"Received shadow view is not an instanse of `RCTSurfaceRootShadowView`.");
+      @"Received shadow view is not an instance of `RCTSurfaceRootShadowView`.");
 
     fittingSize = [rootShadowView sizeThatFitsMinimumSize:minimumSize
                                               maximumSize:maximumSize];
@@ -396,7 +396,7 @@
     RCTSurfaceRootShadowView *rootShadowView =
       (RCTSurfaceRootShadowView *)[uiManager shadowViewForReactTag:self->_rootViewTag];
     RCTAssert([rootShadowView isKindOfClass:[RCTSurfaceRootShadowView class]],
-      @"Received shadow view is not an instanse of `RCTSurfaceRootShadowView`.");
+      @"Received shadow view is not an instance of `RCTSurfaceRootShadowView`.");
 
     [rootShadowView setMinimumSize:minimumSize maximumSize:maximumSize];
     [uiManager setNeedsLayout];
@@ -452,7 +452,7 @@
 
   if (RCTIsMainQueue() && (stage & RCTSurfaceStageSurfaceDidInitialMounting)) {
     // All main-threaded execution (especially mounting process) has to be
-    // intercepted, captured and performed synchnously at the end of this method
+    // intercepted, captured and performed synchronously at the end of this method
     // right after the semaphore signals.
 
     // Atomic variant of `_waitingForMountingStageOnMainQueue = YES;`
diff --git a/React/CxxBridge/RCTCxxBridge.mm b/React/CxxBridge/RCTCxxBridge.mm
index bd93cf804a2..bd48f44f3f5 100644
--- a/React/CxxBridge/RCTCxxBridge.mm
+++ b/React/CxxBridge/RCTCxxBridge.mm
@@ -865,7 +865,7 @@ struct RCTInstanceCallback : public InstanceCallback {
       if (initializeImmediately && RCTIsMainQueue()) {
         block();
       } else {
-        // We've already checked that dispatchGroup is non-null, but this satisifies the
+        // We've already checked that dispatchGroup is non-null, but this satisfies the
         // Xcode analyzer
         if (dispatchGroup) {
           dispatch_group_async(dispatchGroup, dispatch_get_main_queue(), block);
@@ -1153,7 +1153,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithBundleURL:(__unused NSURL *)bundleUR
   // work to the JS queue directly.
 
   if (self.loading || _pendingCount > 0) {
-    // From the callers' perspecive:
+    // From the callers' perspective:
 
     // Phase 1: jsQueueBlocks are added to the queue; _pendingCount is
     // incremented for each.  If the first block is created after self.loading is
diff --git a/React/CxxModule/RCTCxxMethod.mm b/React/CxxModule/RCTCxxMethod.mm
index 2559a9ccac9..fcda4e57f9c 100644
--- a/React/CxxModule/RCTCxxMethod.mm
+++ b/React/CxxModule/RCTCxxMethod.mm
@@ -57,7 +57,7 @@ using namespace facebook::react;
   // is also baked into _method.
 
   // the last N arguments are callbacks, according to the Method data.  The
-  // preceding arguments are values whic have already been parsed from JS: they
+  // preceding arguments are values which have already been parsed from JS: they
   // may be NSNumber (bool, int, double), NSString, NSArray, or NSObject.
 
   CxxModule::Callback first;
diff --git a/React/DevSupport/RCTPackagerClient.h b/React/DevSupport/RCTPackagerClient.h
index e0877bbbc0b..3181d43d004 100644
--- a/React/DevSupport/RCTPackagerClient.h
+++ b/React/DevSupport/RCTPackagerClient.h
@@ -29,7 +29,7 @@ extern const int RCT_PACKAGER_CLIENT_PROTOCOL_VERSION;
 
 @optional
 
-/** By default object will receive its methods on the main queue, unless this method is overriden. */
+/** By default object will receive its methods on the main queue, unless this method is overridden. */
 - (dispatch_queue_t)methodQueue;
 
 @end
diff --git a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h
index 8416d2b902d..d58465de681 100644
--- a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h
+++ b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h
@@ -13,7 +13,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 /**
  * `UIScrollView` subclass which has some improvements and tweaks
- * wich are not directly related to React.
+ * which are not directly related to React.
  */
 @interface RCTEnhancedScrollView : UIScrollView
 
diff --git a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h
index 2b989fcffe7..a3d55f0fd07 100644
--- a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h
@@ -34,7 +34,7 @@ NS_ASSUME_NONNULL_BEGIN
  * and `padding`) of the component.
  * This view must not be a component view; it's just a convenient way
  * to embed/bridge pure native views as component views.
- * Defaults to `nil`. Assing `nil` to remove view as subview.
+ * Defaults to `nil`. Assign `nil` to remove view as subview.
  */
 @property (nonatomic, strong, nullable) UIView *contentView;
 
diff --git a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm
index c90da107117..8c67f8f0457 100644
--- a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm
@@ -459,7 +459,7 @@ static RCTBorderStyle RCTBorderStyleFromBorderStyle(BorderStyle borderStyle)
     CGFloat cornerRadius = 0;
     if (self.clipsToBounds) {
       if (borderMetrics.borderRadii.isUniform()) {
-        // In this case we can simply use `cornerRadius` exclusivly.
+        // In this case we can simply use `cornerRadius` exclusively.
         cornerRadius = borderMetrics.borderRadii.topLeft;
       } else {
         // In this case we have to generate masking layer manually.
diff --git a/React/Fabric/Mounting/RCTComponentViewRegistry.h b/React/Fabric/Mounting/RCTComponentViewRegistry.h
index a85308002f6..d86b021e725 100644
--- a/React/Fabric/Mounting/RCTComponentViewRegistry.h
+++ b/React/Fabric/Mounting/RCTComponentViewRegistry.h
@@ -44,7 +44,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (UIView<RCTComponentViewProtocol> *)componentViewByTag:(ReactTag)tag;
 
 /**
- * Returns `tag` assosiated with given `componentView`.
+ * Returns `tag` associated with given `componentView`.
  */
 - (ReactTag)tagByComponentView:(UIView<RCTComponentViewProtocol> *)componentView;
 
diff --git a/React/Fabric/Surface/RCTFabricSurface.mm b/React/Fabric/Surface/RCTFabricSurface.mm
index 044139fbe85..77ae024a4c1 100644
--- a/React/Fabric/Surface/RCTFabricSurface.mm
+++ b/React/Fabric/Surface/RCTFabricSurface.mm
@@ -88,7 +88,7 @@
   [self stop];
 }
 
-#pragma mark - Immutable Properties (no need to enforce synchonization)
+#pragma mark - Immutable Properties (no need to enforce synchronization)
 
 - (NSString *)moduleName
 {
diff --git a/React/Inspector/RCTInspectorPackagerConnection.m b/React/Inspector/RCTInspectorPackagerConnection.m
index 905e5871196..aa1289c3546 100644
--- a/React/Inspector/RCTInspectorPackagerConnection.m
+++ b/React/Inspector/RCTInspectorPackagerConnection.m
@@ -246,7 +246,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
     return;
   }
 
-  // The corresopnding android code has a lot of custom config options for
+  // The corresponding android code has a lot of custom config options for
   // timeouts, but it appears the iOS RCTSRWebSocket API doesn't have the same
   // implemented options.
   _webSocket = [[RCTSRWebSocket alloc] initWithURL:_url];
diff --git a/React/Modules/RCTAccessibilityManager.m b/React/Modules/RCTAccessibilityManager.m
index 7283947731e..cf41839935b 100644
--- a/React/Modules/RCTAccessibilityManager.m
+++ b/React/Modules/RCTAccessibilityManager.m
@@ -232,7 +232,7 @@ RCT_EXPORT_MODULE()
 {
   NSNumber *m = self.multipliers[category];
   if (m.doubleValue <= 0.0) {
-    RCTLogError(@"Can't determinte multiplier for category %@. Using 1.0.", category);
+    RCTLogError(@"Can't determine multiplier for category %@. Using 1.0.", category);
     m = @1.0;
   }
   return m.doubleValue;
diff --git a/React/Modules/RCTUIManager.m b/React/Modules/RCTUIManager.m
index e41801b35dd..840b4501805 100644
--- a/React/Modules/RCTUIManager.m
+++ b/React/Modules/RCTUIManager.m
@@ -279,7 +279,7 @@ static NSDictionary *deviceOrientationEventBody(UIDeviceOrientation orientation)
     @"Attempt to register rootTag (%@) which is not actually root tag.", rootTag);
 
   RCTAssert(![_rootViewTags containsObject:rootTag],
-    @"Attempt to register rootTag (%@) which was already registred.", rootTag);
+    @"Attempt to register rootTag (%@) which was already registered.", rootTag);
 
   [_rootViewTags addObject:rootTag];
 
@@ -1203,7 +1203,7 @@ RCT_EXPORT_METHOD(dispatchViewManagerCommand:(nonnull NSNumber *)reactTag
   // so we have to maintain this collection properly.
   NSArray<NSString *> *previousProps;
   if ((previousProps = [_shadowViewsWithUpdatedProps objectForKey:shadowView])) {
-    // Merging already registred changed props and new ones.
+    // Merging already registered changed props and new ones.
     NSMutableSet *set = [NSMutableSet setWithArray:previousProps];
     [set addObjectsFromArray:props];
     props = [set allObjects];
@@ -1324,7 +1324,7 @@ RCT_EXPORT_METHOD(measureInWindow:(nonnull NSNumber *)reactTag
 }
 
 /**
- * Returs if the shadow view provided has the `ancestor` shadow view as
+ * Returns if the shadow view provided has the `ancestor` shadow view as
  * an actual ancestor.
  */
 RCT_EXPORT_METHOD(viewIsDescendantOf:(nonnull NSNumber *)reactTag
diff --git a/React/Modules/RCTUIManagerUtils.h b/React/Modules/RCTUIManagerUtils.h
index 9edbe4b1cf1..895399c06e0 100644
--- a/React/Modules/RCTUIManagerUtils.h
+++ b/React/Modules/RCTUIManagerUtils.h
@@ -85,7 +85,7 @@ RCT_EXTERN BOOL RCTIsPseudoUIManagerQueue(void);
 RCT_EXTERN void RCTExecuteOnUIManagerQueue(dispatch_block_t block);
 
 /**
- * *Synchorously* executes the specified block on the UIManager queue.
+ * *Synchronously* executes the specified block on the UIManager queue.
  * Unlike `dispatch_sync()` this will execute the block immediately
  * if we're already on the UIManager queue.
  * Please do not use this unless you really know what you're doing.
diff --git a/React/Views/RCTBorderDrawing.m b/React/Views/RCTBorderDrawing.m
index a92db477910..540245c1922 100644
--- a/React/Views/RCTBorderDrawing.m
+++ b/React/Views/RCTBorderDrawing.m
@@ -456,7 +456,7 @@ static UIImage *RCTGetSolidBorderImage(RCTCornerRadii cornerRadii,
 //         +------------------+
 //
 //
-// Note that this approach will produce discontinous colour changes at the edge
+// Note that this approach will produce discontinuous colour changes at the edge
 // (which is okay). The reason is that Quartz does not currently support drawing
 // of gradients _along_ a path (NB: clipping a path and drawing a linear gradient
 // is _not_ equivalent).
diff --git a/React/Views/RCTShadowView+Layout.h b/React/Views/RCTShadowView+Layout.h
index e99d60da647..9d68015030d 100644
--- a/React/Views/RCTShadowView+Layout.h
+++ b/React/Views/RCTShadowView+Layout.h
@@ -25,14 +25,14 @@
  * Designated method to control dirty propagation mechanism.
  * Dirties the shadow view (and all affected shadow views, usually a superview)
  * in terms of layout.
- * The default implementaion does nothing.
+ * The default implementation does nothing.
  */
 - (void)dirtyLayout;
 
 /**
  * Designated method to control dirty propagation mechanism.
  * Clears (makes not dirty) the shadow view.
- * The default implementaion does nothing.
+ * The default implementation does nothing.
  */
 - (void)clearLayout;
 
diff --git a/React/Views/RCTShadowView+Layout.m b/React/Views/RCTShadowView+Layout.m
index a4c39f208b7..da110cc740b 100644
--- a/React/Views/RCTShadowView+Layout.m
+++ b/React/Views/RCTShadowView+Layout.m
@@ -64,12 +64,12 @@
 
 - (void)dirtyLayout
 {
-  // The default implementaion does nothing.
+  // The default implementation does nothing.
 }
 
 - (void)clearLayout
 {
-  // The default implementaion does nothing.
+  // The default implementation does nothing.
 }
 
 @end
diff --git a/React/Views/RCTViewManager.m b/React/Views/RCTViewManager.m
index bdc9ecccd84..fcc7fa0271b 100644
--- a/React/Views/RCTViewManager.m
+++ b/React/Views/RCTViewManager.m
@@ -121,7 +121,7 @@ RCT_EXPORT_VIEW_PROPERTY(hasTVPreferredFocus, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(tvParallaxProperties, NSDictionary)
 #endif
 
-// Acessibility related properties
+// Accessibility related properties
 RCT_REMAP_VIEW_PROPERTY(accessible, reactAccessibilityElement.isAccessibilityElement, BOOL)
 RCT_REMAP_VIEW_PROPERTY(accessibilityActions, reactAccessibilityElement.accessibilityActions, NSDictionaryArray)
 RCT_REMAP_VIEW_PROPERTY(accessibilityLabel, reactAccessibilityElement.accessibilityLabel, NSString)
diff --git a/React/Views/ScrollView/RCTScrollContentShadowView.m b/React/Views/ScrollView/RCTScrollContentShadowView.m
index 7d4e2f78f81..16bf6147c0f 100644
--- a/React/Views/ScrollView/RCTScrollContentShadowView.m
+++ b/React/Views/ScrollView/RCTScrollContentShadowView.m
@@ -18,7 +18,7 @@
 {
   if (layoutMetrics.layoutDirection == UIUserInterfaceLayoutDirectionRightToLeft) {
     // Motivation:
-    // Yoga place `contentView` on the right side of `scrollView` when RTL layout is enfoced.
+    // Yoga place `contentView` on the right side of `scrollView` when RTL layout is enforced.
     // That breaks everything; it is completely pointless to (re)position `contentView`
     // because it is `contentView`'s job. So, we work around it here.
 
diff --git a/React/Views/ScrollView/RCTScrollView.m b/React/Views/ScrollView/RCTScrollView.m
index 0e0b882a02c..b028f020ceb 100644
--- a/React/Views/ScrollView/RCTScrollView.m
+++ b/React/Views/ScrollView/RCTScrollView.m
@@ -170,7 +170,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
     [self.panGestureRecognizer addTarget:self action:@selector(handleCustomPan:)];
 
     if ([self respondsToSelector:@selector(setSemanticContentAttribute:)]) {
-      // We intentionaly force `UIScrollView`s `semanticContentAttribute` to `LTR` here
+      // We intentionally force `UIScrollView`s `semanticContentAttribute` to `LTR` here
       // because this attribute affects a position of vertical scrollbar; we don't want this
       // scrollbar flip because we also flip it with whole `UIScrollView` flip.
       self.semanticContentAttribute = UISemanticContentAttributeForceLeftToRight;
@@ -367,7 +367,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
 {
   [super didMoveToWindow];
   // ScrollView enables pinch gesture late in its lifecycle. So simply setting it
-  // in the setter gets overriden when the view loads.
+  // in the setter gets overridden when the view loads.
   self.pinchGestureRecognizer.enabled = _pinchGestureEnabled;
 }
 #endif //TARGET_OS_TV
diff --git a/React/Views/UIView+React.h b/React/Views/UIView+React.h
index d79a46f7ccc..501ab2eafdf 100644
--- a/React/Views/UIView+React.h
+++ b/React/Views/UIView+React.h
@@ -72,7 +72,7 @@
 
 /**
  * Used by the UIIManager to set the view frame.
- * May be overriden to disable animation, etc.
+ * May be overridden to disable animation, etc.
  */
 - (void)reactSetFrame:(CGRect)frame;
 
@@ -107,7 +107,7 @@
 /**
  * The (sub)view which represents this view in terms of accessibility.
  * ViewManager will apply all accessibility properties directly to this view.
- * May be overriten in view subclass which needs to be accessiblitywise
+ * May be overridden in view subclass which needs to be accessiblitywise
  * transparent in favour of some subview.
  * Defaults to `self`.
  */
diff --git a/React/Views/UIView+React.m b/React/Views/UIView+React.m
index a14707137cf..f5bae6b656e 100644
--- a/React/Views/UIView+React.m
+++ b/React/Views/UIView+React.m
@@ -290,7 +290,7 @@
   return UIEdgeInsetsInsetRect(self.bounds, self.reactCompoundInsets);
 }
 
-#pragma mark - Accessiblity
+#pragma mark - Accessibility
 
 - (UIView *)reactAccessibilityElement
 {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java
index 350acef7769..41c50998bdf 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java
@@ -15,7 +15,7 @@ import com.facebook.react.module.annotations.ReactModule;
 import java.io.File;
 
 // This module is being called only by Java via the static method "captureHeap" that
-// requires it to alreay be initialized, thus we eagerly initialize this module
+// requires it to already be initialized, thus we eagerly initialize this module
 @ReactModule(name = "JSCHeapCapture", needsEagerInit = true)
 public class JSCHeapCapture extends ReactContextBaseJavaModule {
   public interface HeapCapture extends JavaScriptModule {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java
index 5d0ef6e77a9..0018e4b7bff 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java
@@ -294,7 +294,7 @@ public class ImageEditingManager extends ReactContextBaseJavaModule {
      */
     private Bitmap crop(BitmapFactory.Options outOptions) throws IOException {
       InputStream inputStream = openBitmapInputStream();
-      // Effeciently crops image without loading full resolution into memory
+      // Efficiently crops image without loading full resolution into memory
       // https://developer.android.com/reference/android/graphics/BitmapRegionDecoder.html
       BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance(inputStream, false);
       try {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/JSCallInvokerHolderImpl.java b/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/JSCallInvokerHolderImpl.java
index cf26f53cb1c..e2ffda1ed23 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/JSCallInvokerHolderImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/JSCallInvokerHolderImpl.java
@@ -13,7 +13,7 @@ import com.facebook.soloader.SoLoader;
 /**
  * JSCallInvoker is created at a different time/place (i.e: in CatalystInstance) than
  * TurboModuleManager. Therefore, we need to wrap JSCallInvoker within a hybrid class so that we may
- * pass it from CatalystInstance, through Java, to TurboMoudleManager::initHybrid.
+ * pass it from CatalystInstance, through Java, to TurboModuleManager::initHybrid.
  */
 public class JSCallInvokerHolderImpl implements JSCallInvokerHolder {
   static {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/interfaces/TurboModuleRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/interfaces/TurboModuleRegistry.java
index d0e8d7c1058..e6b72354f68 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/interfaces/TurboModuleRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/interfaces/TurboModuleRegistry.java
@@ -9,7 +9,7 @@ package com.facebook.react.turbomodule.core.interfaces;
 import androidx.annotation.Nullable;
 import java.util.Collection;
 
-/** Interface to allow for creating and retrieving TurboModuels. */
+/** Interface to allow for creating and retrieving TurboModules. */
 public interface TurboModuleRegistry {
 
   /**
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactAccessibilityDelegate.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactAccessibilityDelegate.java
index e57ef122730..640d6d0859f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactAccessibilityDelegate.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactAccessibilityDelegate.java
@@ -159,7 +159,7 @@ public class ReactAccessibilityDelegate extends AccessibilityDelegateCompat {
       setRole(info, accessibilityRole, host.getContext());
     }
 
-    // states are changable.
+    // states are changeable.
     final ReadableArray accessibilityStates =
         (ReadableArray) host.getTag(R.id.accessibility_states);
     final ReadableMap accessibilityState = (ReadableMap) host.getTag(R.id.accessibility_state);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java
index 63a2172a6ef..1fdc329d431 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java
@@ -47,7 +47,7 @@ public class CustomLineHeightSpan implements LineHeightSpan, ReactSpan {
       // Show proportionally additional ascent / top & descent / bottom
       final int additional = mHeight - (-fm.top + fm.bottom);
 
-      // Round up for the negative values and down for the positive values  (arbritary choice)
+      // Round up for the negative values and down for the positive values  (arbitrary choice)
       // So that bottom - top equals additional even if it's an odd number.
       fm.top -= Math.ceil(additional / 2.0f);
       fm.bottom += Math.floor(additional / 2.0f);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
index 308cedb2af4..361426cdd19 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
@@ -36,7 +36,7 @@ import java.util.Map;
 /**
  * {@link ReactShadowNode} abstract class for spannable text nodes.
  *
- * <p>This class handles all text attributes assosiated with {@code <Text>}-ish node. A concrete
+ * <p>This class handles all text attributes associated with {@code <Text>}-ish node. A concrete
  * node can be an anchor {@code <Text>} node, an anchor {@code <TextInput>} node or virtual {@code
  * <Text>} node inside {@code <Text>} or {@code <TextInput>} node. Or even something else.
  *
@@ -241,7 +241,7 @@ public abstract class ReactBaseTextShadowNode extends LayoutShadowNode {
     // TODO(5837930): Investigate whether it's worth optimizing this part and do it if so
 
     // The {@link SpannableStringBuilder} implementation require setSpan operation to be called
-    // up-to-bottom, otherwise all the spannables that are withing the region for which one may set
+    // up-to-bottom, otherwise all the spannables that are within the region for which one may set
     // a new spannable will be wiped out
     List<SetSpanOperation> ops = new ArrayList<>();
     Map<Integer, ReactShadowNode> inlineViews =
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java
index 89d1b39c521..6cfe6bab01b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java
@@ -149,7 +149,7 @@ public class TextLayoutManager {
     SpannableStringBuilder sb = new SpannableStringBuilder();
 
     // The {@link SpannableStringBuilder} implementation require setSpan operation to be called
-    // up-to-bottom, otherwise all the spannables that are withing the region for which one may set
+    // up-to-bottom, otherwise all the spannables that are within the region for which one may set
     // a new spannable will be wiped out
     List<SetSpanOperation> ops = new ArrayList<>();
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
index c1a88cdb24b..1e9fea92381 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
@@ -263,7 +263,7 @@ public class ReactViewManager extends ViewGroupManager<ReactViewGroup> {
       view.setOnClickListener(null);
       view.setClickable(false);
       // Don't set view.setFocusable(false) because we might still want it to be focusable for
-      // accessibiliy reasons
+      // accessibility reasons
     }
   }
 
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
index 5960d4774de..7ff8bceb482 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
@@ -10,7 +10,7 @@
 /** @file CoreClasses.h
  *
  * In CoreClasses.h wrappers for the core classes (jobject, jclass, and jstring) is defined
- * to provide access to corresponding JNI functions + some conveniance.
+ * to provide access to corresponding JNI functions + some convenience.
  */
 
 #include "References-forward.h"
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h
index 1fae26fb21e..606e6a5ed3a 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h
@@ -77,7 +77,7 @@ struct JIterable : JavaClass<JIterable<E>> {
 
 /**
  * JavaClass types which represent Collection, List, and Set are also provided.
- * These preserve the Java class heirarchy.
+ * These preserve the Java class hierarchy.
  */
 template <typename E = jobject>
 struct JCollection : JavaClass<JCollection<E>, JIterable<E>> {
diff --git a/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java b/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java
index 1ba4a368f6b..70bb5ae04c4 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java
@@ -1139,7 +1139,7 @@ public class NativeAnimatedNodeTraversalTest {
    */
   @Test
   public void testSpringTrackingRetainsSpeed() {
-    // this spring config correspomds to tension 20 and friction 0.5 which makes the spring settle
+    // this spring config corresponds to tension 20 and friction 0.5 which makes the spring settle
     // very slowly
     JavaOnlyMap springConfig =
         JavaOnlyMap.of(
diff --git a/ReactCommon/cxxreact/JSBigString.cpp b/ReactCommon/cxxreact/JSBigString.cpp
index d841295e323..325ac35325b 100644
--- a/ReactCommon/cxxreact/JSBigString.cpp
+++ b/ReactCommon/cxxreact/JSBigString.cpp
@@ -24,7 +24,7 @@ JSBigFileString::JSBigFileString(int fd, size_t size, off_t offset /*= 0*/)
   folly::checkUnixError(m_fd = dup(fd),
     "Could not duplicate file descriptor");
 
-  // Offsets given to mmap must be page aligend. We abstract away that
+  // Offsets given to mmap must be page aligned. We abstract away that
   // restriction by sending a page aligned offset to mmap, and keeping track
   // of the offset within the page that we must alter the mmap pointer by to
   // get the final desired offset.
diff --git a/ReactCommon/cxxreact/MethodCall.cpp b/ReactCommon/cxxreact/MethodCall.cpp
index 7141513d174..4657914caef 100644
--- a/ReactCommon/cxxreact/MethodCall.cpp
+++ b/ReactCommon/cxxreact/MethodCall.cpp
@@ -69,7 +69,7 @@ std::vector<MethodCall> parseMethodCalls(folly::dynamic&& jsonData) {
       std::move(params[i]),
       callId);
 
-    // only incremement callid if contains valid callid as callid is optional
+    // only increment callid if contains valid callid as callid is optional
     callId += (callId != -1) ? 1 : 0;
   }
 
diff --git a/ReactCommon/cxxreact/NativeToJsBridge.cpp b/ReactCommon/cxxreact/NativeToJsBridge.cpp
index 2c3893e87e6..315ef714836 100644
--- a/ReactCommon/cxxreact/NativeToJsBridge.cpp
+++ b/ReactCommon/cxxreact/NativeToJsBridge.cpp
@@ -58,7 +58,7 @@ public:
     if (isEndOfBatch) {
       // onBatchComplete will be called on the native (module) queue, but
       // decrementPendingJSCalls will be called sync. Be aware that the bridge may still
-      // be processing native calls when the birdge idle signaler fires.
+      // be processing native calls when the bridge idle signaler fires.
       if (m_batchHadNativeModuleCalls) {
         m_callback->onBatchComplete();
         m_batchHadNativeModuleCalls = false;
diff --git a/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp b/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp
index 52c70153215..62f9596ffc9 100644
--- a/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp
+++ b/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp
@@ -225,7 +225,7 @@ YGNode *YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector(
     int childIndex) {
   SystraceSection s("YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector");
 
-  // At this point it is garanteed that all shadow nodes associated with yoga
+  // At this point it is guaranteed that all shadow nodes associated with yoga
   // nodes are `YogaLayoutableShadowNode` subclasses.
   auto parentNode =
       static_cast<YogaLayoutableShadowNode *>(parentYogaNode->getContext());
diff --git a/ReactCommon/fabric/core/events/EventBeat.h b/ReactCommon/fabric/core/events/EventBeat.h
index 448da6dee2a..664a7292f9f 100644
--- a/ReactCommon/fabric/core/events/EventBeat.h
+++ b/ReactCommon/fabric/core/events/EventBeat.h
@@ -17,7 +17,7 @@ namespace react {
 
 /*
  * Event Beat serves two interleaving purposes: synchronization of event queues
- * and ensuring that event dispatching happens on propper threads.
+ * and ensuring that event dispatching happens on proper threads.
  */
 class EventBeat {
  public:
diff --git a/ReactCommon/fabric/core/events/EventEmitter.h b/ReactCommon/fabric/core/events/EventEmitter.h
index f819e56b024..def04274ea6 100644
--- a/ReactCommon/fabric/core/events/EventEmitter.h
+++ b/ReactCommon/fabric/core/events/EventEmitter.h
@@ -68,7 +68,7 @@ class EventEmitter {
 #endif
 
   /*
-   * Initates an event delivery process.
+   * Initiates an event delivery process.
    * Is used by particular subclasses only.
    */
   void dispatchEvent(
diff --git a/ReactCommon/fabric/core/layout/LayoutMetrics.h b/ReactCommon/fabric/core/layout/LayoutMetrics.h
index cf85510b124..0c1d473112b 100644
--- a/ReactCommon/fabric/core/layout/LayoutMetrics.h
+++ b/ReactCommon/fabric/core/layout/LayoutMetrics.h
@@ -14,7 +14,7 @@ namespace facebook {
 namespace react {
 
 /*
- * Describes results of layout process for partucular shadow node.
+ * Describes results of layout process for particular shadow node.
  */
 struct LayoutMetrics {
   Rect frame;
diff --git a/ReactCommon/fabric/core/layout/LayoutPrimitives.h b/ReactCommon/fabric/core/layout/LayoutPrimitives.h
index 6c6f524aec1..86582e0e3b6 100644
--- a/ReactCommon/fabric/core/layout/LayoutPrimitives.h
+++ b/ReactCommon/fabric/core/layout/LayoutPrimitives.h
@@ -14,7 +14,7 @@ namespace facebook {
 namespace react {
 
 /*
- * Defines visibility of the shadow node and partucular layout
+ * Defines visibility of the shadow node and particular layout
  * engine which should be used for laying out the node.
  */
 enum class DisplayType {
diff --git a/ReactCommon/fabric/core/layout/LayoutableShadowNode.h b/ReactCommon/fabric/core/layout/LayoutableShadowNode.h
index d28561cceb8..427f443e21d 100644
--- a/ReactCommon/fabric/core/layout/LayoutableShadowNode.h
+++ b/ReactCommon/fabric/core/layout/LayoutableShadowNode.h
@@ -37,14 +37,14 @@ class LayoutableShadowNode : public virtual Sealable {
   virtual ~LayoutableShadowNode() noexcept = default;
 
   /*
-   * Measures the node (and node content, propbably recursivly) with
+   * Measures the node (and node content, probably recursively) with
    * given constrains and relying on possible layout.
    * Default implementation returns zero size.
    */
   virtual Size measure(LayoutConstraints layoutConstraints) const;
 
   /*
-   * Computes layout recusively.
+   * Computes layout recursively.
    * Additional environmental constraints might be provided via `layoutContext`
    * argument.
    * Default implementation basically calls `layoutChildren()` and then
@@ -98,7 +98,7 @@ class LayoutableShadowNode : public virtual Sealable {
 
   /*
    * Applies layout for all children;
-   * does not call anything in recusive manner *by desing*.
+   * does not call anything in recursive manner *by desing*.
    */
   virtual void layoutChildren(LayoutContext layoutContext);
 
diff --git a/ReactCommon/fabric/core/primitives/Sealable.cpp b/ReactCommon/fabric/core/primitives/Sealable.cpp
index 730e926540c..0fefa8c7572 100644
--- a/ReactCommon/fabric/core/primitives/Sealable.cpp
+++ b/ReactCommon/fabric/core/primitives/Sealable.cpp
@@ -14,7 +14,7 @@ namespace react {
 
 /*
  * Note:
- * We must explictly implement all *the rule of five* methods because:
+ * We must explicitly implement all *the rule of five* methods because:
  *   1. Using `std::atomic` behind `sealed_` implicitly deletes default
  *      constructors;
  *   2. We have to establish behaviour where any new cloned or moved instances
diff --git a/ReactCommon/fabric/core/shadownode/LocalData.h b/ReactCommon/fabric/core/shadownode/LocalData.h
index 83680c3853b..2e4332fcb2b 100644
--- a/ReactCommon/fabric/core/shadownode/LocalData.h
+++ b/ReactCommon/fabric/core/shadownode/LocalData.h
@@ -21,7 +21,7 @@ using SharedLocalData = std::shared_ptr<const LocalData>;
 /*
  * Abstract class for any kind of concrete pieces of local data specific for
  * some kinds of `ShadowNode`s.
- * LocalData might be used to communicate some infomation between `ShadowNode`s
+ * LocalData might be used to communicate some information between `ShadowNode`s
  * and native component views.
  * All `LocalData` objects *must* be immutable (sealed) when they became
  * a part of the shadow tree.
diff --git a/ReactCommon/fabric/core/shadownode/ShadowNode.h b/ReactCommon/fabric/core/shadownode/ShadowNode.h
index 3df5efe0a77..1cf57f9ceec 100644
--- a/ReactCommon/fabric/core/shadownode/ShadowNode.h
+++ b/ReactCommon/fabric/core/shadownode/ShadowNode.h
@@ -139,7 +139,7 @@ class ShadowNode : public virtual Sealable,
       int suggestedIndex = -1);
 
   /*
-   * Sets local data assosiated with the node.
+   * Sets local data associated with the node.
    * The node must be unsealed at this point.
    */
   void setLocalData(const SharedLocalData &localData);
diff --git a/ReactCommon/fabric/core/shadownode/ShadowNodeFamily.h b/ReactCommon/fabric/core/shadownode/ShadowNodeFamily.h
index 5e5a55b4a4a..6edea067622 100644
--- a/ReactCommon/fabric/core/shadownode/ShadowNodeFamily.h
+++ b/ReactCommon/fabric/core/shadownode/ShadowNodeFamily.h
@@ -34,8 +34,8 @@ class ShadowNodeFamily {
 
   /*
    * Sets the parent.
-   * This is not techically thread-safe, but practically it mutates the object
-   * only once (and the model enforces that this first call is not concurent).
+   * This is not technically thread-safe, but practically it mutates the object
+   * only once (and the model enforces that this first call is not concurrent).
    */
   void setParent(ShadowNodeFamily::Shared const &parent) const;
 
diff --git a/ReactCommon/fabric/debug/DebugStringConvertible.h b/ReactCommon/fabric/debug/DebugStringConvertible.h
index d3e96a3ea88..ccc8aeeb1b6 100644
--- a/ReactCommon/fabric/debug/DebugStringConvertible.h
+++ b/ReactCommon/fabric/debug/DebugStringConvertible.h
@@ -53,7 +53,7 @@ class DebugStringConvertible {
   // Default implementation returns "Node".
   virtual std::string getDebugName() const;
 
-  // Returns a value assosiate with the object.
+  // Returns a value associate with the object.
   // Default implementation returns an empty string.
   virtual std::string getDebugValue() const;
 
@@ -111,7 +111,7 @@ std::string toString(void const *value);
  * - `getDebugName`: Returns a name of the object. Default implementation
  * returns "Node".
  *
- * - `getDebugValue`: Returns a value assosiate with the object. Default
+ * - `getDebugValue`: Returns a value associate with the object. Default
  * implementation returns an empty string.
  *
  * - `getDebugChildren`: Returns a list of `DebugStringConvertible`-compatible
diff --git a/ReactCommon/fabric/graphics/Transform.h b/ReactCommon/fabric/graphics/Transform.h
index 71c9c6b5821..1f83b369389 100644
--- a/ReactCommon/fabric/graphics/Transform.h
+++ b/ReactCommon/fabric/graphics/Transform.h
@@ -22,7 +22,7 @@ struct Transform {
       {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}};
 
   /*
-   * Returs the identity transform (`[1 0 0 0; 0 1 0 0; 0 0 1 0; 0 0 0 1]`).
+   * Returns the identity transform (`[1 0 0 0; 0 1 0 0; 0 0 1 0; 0 0 0 1]`).
    */
   static Transform Identity();
 
diff --git a/ReactCommon/fabric/imagemanager/ImageRequest.h b/ReactCommon/fabric/imagemanager/ImageRequest.h
index d955ce70cf7..a3ae8c57258 100644
--- a/ReactCommon/fabric/imagemanager/ImageRequest.h
+++ b/ReactCommon/fabric/imagemanager/ImageRequest.h
@@ -63,7 +63,7 @@ class ImageRequest final {
 
  private:
   /*
-   * Image source assosiated with the request.
+   * Image source associated with the request.
    */
   ImageSource imageSource_;
 
diff --git a/ReactCommon/fabric/imagemanager/ImageResponse.h b/ReactCommon/fabric/imagemanager/ImageResponse.h
index 3aef630db19..f1f5e3f7c84 100644
--- a/ReactCommon/fabric/imagemanager/ImageResponse.h
+++ b/ReactCommon/fabric/imagemanager/ImageResponse.h
@@ -13,7 +13,7 @@ namespace facebook {
 namespace react {
 
 /*
- * Represents retrieved image bitmap and any assotiated platform-specific info.
+ * Represents retrieved image bitmap and any associated platform-specific info.
  */
 class ImageResponse final {
  public:
diff --git a/ReactCommon/fabric/mapbuffer/MapBuffer.h b/ReactCommon/fabric/mapbuffer/MapBuffer.h
index e92a6f40635..30b1956f66e 100644
--- a/ReactCommon/fabric/mapbuffer/MapBuffer.h
+++ b/ReactCommon/fabric/mapbuffer/MapBuffer.h
@@ -14,7 +14,7 @@ namespace react {
 
 /**
  * MapBuffer is an optimized map format for transferring data like props between
- * C++ and other platforms The implemenation of this map is optimized to:
+ * C++ and other platforms The implementation of this map is optimized to:
  * - be compact to optimize space when sparse (sparse is the common case).
  * - be accessible through JNI with zero/minimal copying via ByteBuffer.
  * - be Have excellent C++ single-write and many-read performance by maximizing
diff --git a/ReactCommon/fabric/mounting/Differentiator.cpp b/ReactCommon/fabric/mounting/Differentiator.cpp
index 7cd23a0309a..41630e30911 100644
--- a/ReactCommon/fabric/mounting/Differentiator.cpp
+++ b/ReactCommon/fabric/mounting/Differentiator.cpp
@@ -143,7 +143,7 @@ static void calculateShadowViewMutations(
     ShadowView const &parentShadowView,
     ShadowViewNodePair::List const &oldChildPairs,
     ShadowViewNodePair::List const &newChildPairs) {
-  // The current version of the algorithm is otimized for simplicity,
+  // The current version of the algorithm is optimized for simplicity,
   // not for performance or optimal result.
 
   if (oldChildPairs == newChildPairs) {
diff --git a/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp b/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp
index 1b6033487fa..fbb8420b7a8 100644
--- a/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp
+++ b/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp
@@ -101,7 +101,7 @@ static std::string componentNameByReactViewName(std::string viewName) {
     return "ActivityIndicatorView";
   }
 
-  // We need this temporarly for testing purposes until we have proper
+  // We need this temporarily for testing purposes until we have proper
   // implementation of core components.
   if (viewName == "SinglelineTextInputView" ||
       viewName == "MultilineTextInputView" || viewName == "AndroidTextInput" ||
diff --git a/ReactCommon/fabric/uimanager/UIManagerBinding.h b/ReactCommon/fabric/uimanager/UIManagerBinding.h
index 1c95c6e1c09..40c5fccf3bf 100644
--- a/ReactCommon/fabric/uimanager/UIManagerBinding.h
+++ b/ReactCommon/fabric/uimanager/UIManagerBinding.h
@@ -16,7 +16,7 @@ namespace react {
 class UIManagerBinding : public jsi::HostObject {
  public:
   /*
-   * Installs UIManagerBinding into JavaSctipt runtime.
+   * Installs UIManagerBinding into JavaScript runtime.
    * Thread synchronization must be enforced externally.
    */
   static void install(
diff --git a/ReactCommon/jsi/JSCRuntime.cpp b/ReactCommon/jsi/JSCRuntime.cpp
index 2b5341c3f9a..a0457397bf2 100644
--- a/ReactCommon/jsi/JSCRuntime.cpp
+++ b/ReactCommon/jsi/JSCRuntime.cpp
@@ -789,7 +789,7 @@ jsi::Object JSCRuntime::createObject(std::shared_ptr<jsi::HostObject> ho) {
 
 std::shared_ptr<jsi::HostObject> JSCRuntime::getHostObject(
     const jsi::Object& obj) {
-  // We are guarenteed at this point to have isHostObject(obj) == true
+  // We are guaranteed at this point to have isHostObject(obj) == true
   // so the private data should be HostObjectMetadata
   JSObjectRef object = objectRef(obj);
   auto metadata =
diff --git a/ReactCommon/jsi/jsi/jsi.h b/ReactCommon/jsi/jsi/jsi.h
index c05c5ae369b..7925be7bed8 100644
--- a/ReactCommon/jsi/jsi/jsi.h
+++ b/ReactCommon/jsi/jsi/jsi.h
@@ -51,7 +51,7 @@ class StringBuffer : public Buffer {
   std::string s_;
 };
 
-/// PreparedJavaScript is a base class repesenting JavaScript which is in a form
+/// PreparedJavaScript is a base class representing JavaScript which is in a form
 /// optimized for execution, in a runtime-specific way. Construct one via
 /// jsi::Runtime::prepareJavaScript().
 /// ** This is an experimental API that is subject to change. **
@@ -150,7 +150,7 @@ class Runtime {
 
   /// Evaluates the given JavaScript \c buffer.  \c sourceURL is used
   /// to annotate the stack trace if there is an exception.  The
-  /// contents may be utf8-encoded JS source code, or binary bytcode
+  /// contents may be utf8-encoded JS source code, or binary bytecode
   /// whose format is specific to the implementation.  If the input
   /// format is unknown, or evaluation causes an error, a JSIException
   /// will be thrown.
@@ -745,7 +745,7 @@ class Array : public Object {
   template <typename... Args>
   static Array createWithElements(Runtime&, Args&&... args);
 
-  /// Creates a new Array instance from intitializer list.
+  /// Creates a new Array instance from initializer list.
   static Array createWithElements(
       Runtime& runtime,
       std::initializer_list<Value> elements);
@@ -919,7 +919,7 @@ class Value {
         std::is_base_of<Symbol, T>::value ||
             std::is_base_of<String, T>::value ||
             std::is_base_of<Object, T>::value,
-        "Value cannot be implictly move-constructed from this type");
+        "Value cannot be implicitly move-constructed from this type");
     new (&data_.pointer) T(std::move(other));
   }
 
diff --git a/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h b/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h
index 39c692f979a..a290c409b8d 100644
--- a/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h
+++ b/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h
@@ -28,7 +28,7 @@ namespace react {
 // error report. Note that the errorMessageProducer will be invoked
 // asynchronously on a different thread.
 //
-// The timeout behavior does NOT caues the invokee to aborted. If the invokee
+// The timeout behavior does NOT cause the invokee to aborted. If the invokee
 // blocks forever, so will the ScopedTimeoutInvoker (but the soft error may
 // still be reported).
 //
diff --git a/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm b/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm
index c3e9f82d11c..15d52a504e4 100644
--- a/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm
+++ b/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm
@@ -49,7 +49,7 @@ static Class getFallbackClassFromName(const char *name)
   std::unordered_map<std::string, std::shared_ptr<react::TurboModule>> _turboModuleCache;
 
   /**
-   * _rctTurboModuleCache can be accessed by muitiple threads at once via
+   * _rctTurboModuleCache can be accessed by multiple threads at once via
    * the provideRCTTurboModule method. This can lead to races. Therefore, we
    * need to protect access to this unordered_map.
    *
diff --git a/ReactCommon/utils/ContextContainer.h b/ReactCommon/utils/ContextContainer.h
index 4889a43bc7b..d2ea5c3bc81 100644
--- a/ReactCommon/utils/ContextContainer.h
+++ b/ReactCommon/utils/ContextContainer.h
@@ -17,7 +17,7 @@ namespace facebook {
 namespace react {
 
 /*
- * General purpose dependecy injection container.
+ * General purpose dependency injection container.
  * Instance types must be copyable.
  */
 class ContextContainer final {
diff --git a/ReactCommon/yoga/yoga/Utils.h b/ReactCommon/yoga/yoga/Utils.h
index d6fbc26891f..899e832a6c9 100644
--- a/ReactCommon/yoga/yoga/Utils.h
+++ b/ReactCommon/yoga/yoga/Utils.h
@@ -30,7 +30,7 @@
 //
 // - endOfLineIndex: Its the end index of the last flex item which was examined
 //   and it may or may not be part of the current line(as it may be absolutely
-//   positioned or inculding it may have caused to overshoot availableInnerDim)
+//   positioned or including it may have caused to overshoot availableInnerDim)
 //
 // - relativeChildren: Maintain a vector of the child nodes that can shrink
 //   and/or grow.
@@ -71,8 +71,8 @@ YGFloatOptional YGFloatOptionalMax(
 
 float YGFloatMin(const float a, const float b);
 
-// This custom float comparision function compares the array of float with
-// YGFloatsEqual, as the default float comparision operator will not work(Look
+// This custom float comparison function compares the array of float with
+// YGFloatsEqual, as the default float comparison operator will not work(Look
 // at the comments of YGFloatsEqual function).
 template <std::size_t size>
 bool YGFloatArrayEqual(
diff --git a/ReactCommon/yoga/yoga/Yoga.h b/ReactCommon/yoga/yoga/Yoga.h
index 6ec796d84b2..493e556cb59 100644
--- a/ReactCommon/yoga/yoga/Yoga.h
+++ b/ReactCommon/yoga/yoga/Yoga.h
@@ -330,7 +330,7 @@ WIN_EXPORT bool YGConfigIsExperimentalFeatureEnabled(
     YGConfigRef config,
     YGExperimentalFeature feature);
 
-// Using the web defaults is the prefered configuration for new projects. Usage
+// Using the web defaults is the preferred configuration for new projects. Usage
 // of non web defaults should be considered as legacy.
 WIN_EXPORT void YGConfigSetUseWebDefaults(YGConfigRef config, bool enabled);
 WIN_EXPORT bool YGConfigGetUseWebDefaults(YGConfigRef config);
diff --git a/packages/react-native-codegen/src/generators/components/CppHelpers.js b/packages/react-native-codegen/src/generators/components/CppHelpers.js
index 2f0a6d00c78..296e00fea42 100644
--- a/packages/react-native-codegen/src/generators/components/CppHelpers.js
+++ b/packages/react-native-codegen/src/generators/components/CppHelpers.js
@@ -40,7 +40,7 @@ function getCppTypeForAnnotation(
       return 'Float';
     default:
       (type: empty);
-      throw new Error(`Receieved invalid typeAnnotation ${type}`);
+      throw new Error(`Received invalid typeAnnotation ${type}`);
   }
 }
 
diff --git a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js
index 5e7ffbaf6a1..ce967b2adfc 100644
--- a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js
+++ b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterCpp.js
@@ -118,7 +118,7 @@ function generateSetters(
           `.trim();
         default:
           (eventProperty: empty);
-          throw new Error('Receieved invalid event property type');
+          throw new Error('Received invalid event property type');
       }
     })
     .join('\n');
diff --git a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js
index 04eb450c113..653ed415754 100644
--- a/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js
+++ b/packages/react-native-codegen/src/generators/components/GenerateEventEmitterH.js
@@ -102,7 +102,7 @@ function getNativeTypeFromAnnotation(
       );
     default:
       (type: empty);
-      throw new Error(`Receieved invalid event property type ${type}`);
+      throw new Error(`Received invalid event property type ${type}`);
   }
 }
 function generateEnum(structs, componentName, options, nameParts) {
@@ -175,7 +175,7 @@ function generateStruct(
       default:
         (property: empty);
         throw new Error(
-          `Receieved invalid event property type ${property.type}`,
+          `Received invalid event property type ${property.type}`,
         );
     }
   });
diff --git a/packages/react-native-codegen/src/generators/components/GeneratePropsH.js b/packages/react-native-codegen/src/generators/components/GeneratePropsH.js
index 47a5716e153..94e4bf2a97f 100644
--- a/packages/react-native-codegen/src/generators/components/GeneratePropsH.js
+++ b/packages/react-native-codegen/src/generators/components/GeneratePropsH.js
@@ -155,7 +155,7 @@ function getNativeTypeFromAnnotation(componentName: string, prop): string {
           return 'Point';
         default:
           (typeAnnotation.name: empty);
-          throw new Error('Receieved unknown NativePrimitiveTypeAnnotation');
+          throw new Error('Received unknown NativePrimitiveTypeAnnotation');
       }
     case 'ArrayTypeAnnotation': {
       if (typeAnnotation.elementType.type === 'ArrayTypeAnnotation') {
@@ -177,7 +177,7 @@ function getNativeTypeFromAnnotation(componentName: string, prop): string {
       return getEnumName(componentName, prop.name);
     default:
       (typeAnnotation: empty);
-      throw new Error('Receieved invalid typeAnnotation');
+      throw new Error('Received invalid typeAnnotation');
   }
 }
 
@@ -208,7 +208,7 @@ function convertDefaultTypeToString(componentName: string, prop): string {
           return '';
         default:
           (typeAnnotation.name: empty);
-          throw new Error('Receieved unknown NativePrimitiveTypeAnnotation');
+          throw new Error('Received unknown NativePrimitiveTypeAnnotation');
       }
     case 'ArrayTypeAnnotation': {
       switch (typeAnnotation.elementType.type) {
@@ -234,7 +234,7 @@ function convertDefaultTypeToString(componentName: string, prop): string {
       )}`;
     default:
       (typeAnnotation: empty);
-      throw new Error('Receieved invalid typeAnnotation');
+      throw new Error('Received invalid typeAnnotation');
   }
 }
 
diff --git a/packages/react-native-codegen/src/generators/components/GeneratePropsJavaDelegate.js b/packages/react-native-codegen/src/generators/components/GeneratePropsJavaDelegate.js
index 460c7e42412..fcb226c7c48 100644
--- a/packages/react-native-codegen/src/generators/components/GeneratePropsJavaDelegate.js
+++ b/packages/react-native-codegen/src/generators/components/GeneratePropsJavaDelegate.js
@@ -59,7 +59,7 @@ function getJavaValueForProp(
           return '(ReadableMap) value';
         default:
           (typeAnnotation.name: empty);
-          throw new Error('Receieved unknown NativePrimitiveTypeAnnotation');
+          throw new Error('Received unknown NativePrimitiveTypeAnnotation');
       }
     case 'ArrayTypeAnnotation': {
       return '(ReadableArray) value';
@@ -68,7 +68,7 @@ function getJavaValueForProp(
       return '(String) value';
     default:
       (typeAnnotation: empty);
-      throw new Error('Receieved invalid typeAnnotation');
+      throw new Error('Received invalid typeAnnotation');
   }
 }
 
diff --git a/packages/react-native-codegen/src/generators/components/GeneratePropsJavaInterface.js b/packages/react-native-codegen/src/generators/components/GeneratePropsJavaInterface.js
index 5350dae282d..f5072771861 100644
--- a/packages/react-native-codegen/src/generators/components/GeneratePropsJavaInterface.js
+++ b/packages/react-native-codegen/src/generators/components/GeneratePropsJavaInterface.js
@@ -56,7 +56,7 @@ function getJavaValueForProp(
           return 'ReadableMap value';
         default:
           (typeAnnotation.name: empty);
-          throw new Error('Receieved unknown NativePrimitiveTypeAnnotation');
+          throw new Error('Received unknown NativePrimitiveTypeAnnotation');
       }
     case 'ArrayTypeAnnotation': {
       return 'ReadableArray value';
@@ -65,7 +65,7 @@ function getJavaValueForProp(
       return 'String value';
     default:
       (typeAnnotation: empty);
-      throw new Error('Receieved invalid typeAnnotation');
+      throw new Error('Received invalid typeAnnotation');
   }
 }
 
diff --git a/packages/react-native-codegen/src/parsers/flow/components/index.js b/packages/react-native-codegen/src/parsers/flow/components/index.js
index 32e455d2cf6..c683850ede1 100644
--- a/packages/react-native-codegen/src/parsers/flow/components/index.js
+++ b/packages/react-native-codegen/src/parsers/flow/components/index.js
@@ -113,7 +113,7 @@ function getCommandProperties(commandTypeName, types) {
 
   if (typeAlias.type !== 'InterfaceDeclaration') {
     throw new Error(
-      `The type argument for codegenNativeCommands must be an interface, receieved ${
+      `The type argument for codegenNativeCommands must be an interface, received ${
         typeAlias.type
       }`,
     );
diff --git a/scripts/test-manual-e2e.sh b/scripts/test-manual-e2e.sh
index bf87f7ee5f7..7a1aab22636 100755
--- a/scripts/test-manual-e2e.sh
+++ b/scripts/test-manual-e2e.sh
@@ -51,7 +51,7 @@ info "and then press any key."
 info ""
 read -n 1
 
-./gradlew :RNTester:android:app:installDebug || error "Couln't build RNTester Android"
+./gradlew :RNTester:android:app:installDebug || error "Couldn't build RNTester Android"
 
 info "Press any key to run RNTester in an already running Android emulator/device"
 info ""
diff --git a/scripts/validate-ios-test-env.sh b/scripts/validate-ios-test-env.sh
index ee25a3ea2a3..695cf46c9f3 100755
--- a/scripts/validate-ios-test-env.sh
+++ b/scripts/validate-ios-test-env.sh
@@ -11,7 +11,7 @@
 # It also checks that the correct Node version is installed. Node 10 is not fully
 # supported at the time and Node 6 is no longer supported.
 
-# Function used to compare dot seperated version numbers
+# Function used to compare dot separated version numbers
 function version_gt() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1"; }
 
 # Check that node is installed.