Fix breakages and add fixture entrypoint

compiler/packages/babel-plugin-react-forget/src/Entrypoint/Suppression.ts

@@ -13,6 +13,7 @@ import {
   CompilerSuggestionOperation,
   ErrorSeverity,
 } from "../CompilerError";
+import { assertExhaustive } from "../Utils/utils";
 
 /**
  * Captures the start and end range of a pair of eslint-disable ... eslint-enable comments. In the
@@ -170,6 +171,12 @@ export function suppressionsToCompilerError(
         reason =
           "React Forget has bailed out of optimizing this component as one or more React rule violations were reported by Flow";
         suggestion = "Remove the Flow suppression and address the React error";
+        break;
+      default:
+        assertExhaustive(
+          suppressionRange.source,
+          "Unhandled suppression source"
+        );
     }
     error.pushErrorDetail(
       new CompilerErrorDetail({

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/error.bailout-on-flow-suppression.expect.md

@@ -5,9 +5,9 @@
 // @enableFlowSuppressions
 
 function Foo(props) {
-    // $FlowFixMe[react-rule-hook]
-    useX();
-    return null;
+  // $FlowFixMe[react-rule-hook]
+  useX();
+  return null;
 }
 
 ```

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/no-flow-bailout-unrelated.expect.md

@@ -5,12 +5,22 @@
 // @enableFlowSuppressions
 
 function Foo(props) {
-    // $FlowFixMe[incompatible-type]
-    useX();
-    const x = new Foo(...props.foo, null, ...[props.bar]);
-    return x;
+  // $FlowFixMe[incompatible-type]
+  useX();
+  const x = new Foo(...props.foo, null, ...[props.bar]);
+  return x;
 }
 
+export const FIXTURE_ENTRYPOINT = {
+  fn: Foo,
+  params: [
+    {
+      foo: [1],
+      bar: 2,
+    },
+  ],
+};
+
 ```
 
 ## Code
@@ -35,5 +45,15 @@ function Foo(props) {
   return x;
 }
 
+export const FIXTURE_ENTRYPOINT = {
+  fn: Foo,
+  params: [
+    {
+      foo: [1],
+      bar: 2,
+    },
+  ],
+};
+
 ```
       

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/no-flow-bailout-unrelated.js

@@ -6,3 +6,13 @@ function Foo(props) {
   const x = new Foo(...props.foo, null, ...[props.bar]);
   return x;
 }
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Foo,
+  params: [
+    {
+      foo: [1],
+      bar: 2,
+    },
+  ],
+};