[compiler][repro] Test fixture for fbt plural bug

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/fbt/bug-multiple-fbt-plural.expect.md

@@ -0,0 +1,110 @@
+
+## Input
+
+```javascript
+import fbt from 'fbt';
+
+/**
+ * Forget + fbt inconsistency. Evaluator errors with the following
+ *   Found differences in evaluator results
+ *   Non-forget (expected):
+ *   (kind: ok) 1 rewrite to Rust · 2 months traveling
+ *   Forget:
+ *   (kind: ok) 1 rewrites to Rust · 2 months traveling
+ *
+ * The root issue here is that fbt:plural reads `.start` and `.end` from
+ * babel nodes to slice into source strings. (fbt:enum suffers from the same
+ * problem).
+ * See:
+ *  - [getRawSource](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/FbtUtil.js#L666-L673)
+ *  - [getArgCode](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/fbt-nodes/FbtArguments.js#L88-L97)
+ *  - [_getStringVariationCombinations](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/JSFbtBuilder.js#L297)
+ *
+ * Specifically, the `count` node requires that a `.start/.end` be attached
+ * (see [code in FbtPluralNode](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/fbt-nodes/FbtPluralNode.js#L87-L90))
+ *
+ * In this fixture, `count` nodes are the `rewrites` and `months` identifiers.
+ */
+function Foo({rewrites, months}) {
+  return (
+    <fbt desc="Test fbt description">
+      <fbt:plural count={rewrites} name="number of rewrites" showCount="yes">
+        rewrite
+      </fbt:plural>
+      to Rust ·
+      <fbt:plural count={months} name="number of months" showCount="yes">
+        month
+      </fbt:plural>
+      traveling
+    </fbt>
+  );
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Foo,
+  params: [{rewrites: 1, months: 2}],
+};
+
+```
+
+## Code
+
+```javascript
+import { c as _c } from "react/compiler-runtime";
+import fbt from "fbt";
+
+/**
+ * Forget + fbt inconsistency. Evaluator errors with the following
+ *   Found differences in evaluator results
+ *   Non-forget (expected):
+ *   (kind: ok) 1 rewrite to Rust · 2 months traveling
+ *   Forget:
+ *   (kind: ok) 1 rewrites to Rust · 2 months traveling
+ *
+ * The root issue here is that fbt:plural reads `.start` and `.end` from
+ * babel nodes to slice into source strings. (fbt:enum suffers from the same
+ * problem).
+ * See:
+ *  - [getRawSource](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/FbtUtil.js#L666-L673)
+ *  - [getArgCode](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/fbt-nodes/FbtArguments.js#L88-L97)
+ *  - [_getStringVariationCombinations](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/JSFbtBuilder.js#L297)
+ *
+ * Specifically, the `count` node requires that a `.start/.end` be attached
+ * (see [code in FbtPluralNode](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/fbt-nodes/FbtPluralNode.js#L87-L90))
+ *
+ * In this fixture, `count` nodes are the `rewrites` and `months` identifiers.
+ */
+function Foo(t0) {
+  const $ = _c(3);
+  const { rewrites, months } = t0;
+  let t1;
+  if ($[0] !== rewrites || $[1] !== months) {
+    t1 = fbt._(
+      {
+        "*": {
+          "*": "{number of rewrites} rewrites to Rust · {number of months} months traveling",
+        },
+        _1: { _1: "1 rewrite to Rust · 1 month traveling" },
+      },
+      [
+        fbt._plural(rewrites, "number of rewrites"),
+        fbt._plural(months, "number of months"),
+      ],
+      { hk: "49MfZA" },
+    );
+    $[0] = rewrites;
+    $[1] = months;
+    $[2] = t1;
+  } else {
+    t1 = $[2];
+  }
+  return t1;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Foo,
+  params: [{ rewrites: 1, months: 2 }],
+};
+
+```
+

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/fbt/bug-multiple-fbt-plural.tsx

@@ -0,0 +1,42 @@
+import fbt from 'fbt';
+
+/**
+ * Forget + fbt inconsistency. Evaluator errors with the following
+ *   Found differences in evaluator results
+ *   Non-forget (expected):
+ *   (kind: ok) 1 rewrite to Rust · 2 months traveling
+ *   Forget:
+ *   (kind: ok) 1 rewrites to Rust · 2 months traveling
+ *
+ * The root issue here is that fbt:plural reads `.start` and `.end` from
+ * babel nodes to slice into source strings. (fbt:enum suffers from the same
+ * problem).
+ * See:
+ *  - [getRawSource](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/FbtUtil.js#L666-L673)
+ *  - [getArgCode](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/fbt-nodes/FbtArguments.js#L88-L97)
+ *  - [_getStringVariationCombinations](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/JSFbtBuilder.js#L297)
+ *
+ * Specifically, the `count` node requires that a `.start/.end` be attached
+ * (see [code in FbtPluralNode](https://github.com/facebook/fbt/blob/main/packages/babel-plugin-fbt/src/fbt-nodes/FbtPluralNode.js#L87-L90))
+ *
+ * In this fixture, `count` nodes are the `rewrites` and `months` identifiers.
+ */
+function Foo({rewrites, months}) {
+  return (
+    <fbt desc="Test fbt description">
+      <fbt:plural count={rewrites} name="number of rewrites" showCount="yes">
+        rewrite
+      </fbt:plural>
+      to Rust ·
+      <fbt:plural count={months} name="number of months" showCount="yes">
+        month
+      </fbt:plural>
+      traveling
+    </fbt>
+  );
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Foo,
+  params: [{rewrites: 1, months: 2}],
+};

compiler/packages/snap/src/SproutTodoFilter.ts

@@ -485,6 +485,7 @@ const skipFilter = new Set([
   'rules-of-hooks/rules-of-hooks-69521d94fa03',
 
   // bugs
+  'fbt/bug-multiple-fbt-plural',
   'fbt/bug-fbt-preserve-whitespace-param',
   'bug-invalid-hoisting-functionexpr',
   'original-reactive-scopes-fork/bug-nonmutating-capture-in-unsplittable-memo-block',