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oxc-project__oxc/crates/oxc_react_compiler/tests/snapshots/try-catch-in-nested-scope.snap
Boshen 6efce65746 test(react_compiler): snapshot the upstream fixture corpus (#24101)
## Summary

`oxc_react_compiler` had no committed test over the upstream React
Compiler fixture corpus — the fixtures lived only in the
`oxc-project/forked-react-compiler` checkout, exercised out-of-tree.
That gap let real regressions slip past the 15 in-crate integration
tests. This PR closes it.

- **`crates/oxc_react_compiler/fixtures/`** — 1734 fixture *input* files
(`.js`/`.ts`/`.tsx`/`.jsx`/`.mjs`), copied from the fork's
`babel-plugin-react-compiler/src/__tests__/fixtures/compiler` tree with
subdirectories preserved. Flow fixtures (the `@flow`-pragma ones) are
excluded — oxc has no Flow parser. The upstream `.expect.md` goldens are
also not copied; insta is the golden here.
- **`crates/oxc_react_compiler/tests/snapshot.rs`** — an `insta::glob!`
test that, per fixture, derives `PluginOptions`/`EnvironmentConfig` from
the first-line `// @directive` pragmas (base `compilationMode=all` /
`panicThreshold=all_errors`, matching the upstream `snap` runner),
parses → builds semantic → runs `transform`, and snapshots the compiled
output plus diagnostics. Unrecognised directives are ignored, as
upstream does; camelCase flag directives map to `EnvironmentConfig`
fields via `convert_case`.
- **`crates/oxc_react_compiler/tests/snapshots/`** — 1734 committed
`.snap` goldens (oxc's own output).
- **`.typos.toml`** — excludes the fixtures dir (the upstream fixtures
contain intentional typos; `**/*.snap` was already excluded).

These snapshots are oxc's own golden output, so `cargo test` (and CI)
now catches any change in compiler behaviour across the corpus.
Regenerate after an intended change with `cargo insta accept`.

## Verification

- `cargo test -p oxc_react_compiler` passes — the 1734-fixture snapshot
test plus the existing 15 integration tests; also green under
`--all-features` (matches the cross-target CI job).
- clippy `-D warnings`, `cargo fmt`, and `typos` clean.
- No fixture panics; 1336 compiled / 398 unchanged / 335 with
diagnostics.
- The `error.*` fixtures capture the exact diagnostics — including the
"Cannot reassign variable after render" error that a recent scoping
change had silently suppressed, confirming the suite catches real
regressions.

---

AI usage disclosure: authored with Claude Code and reviewed before
submission.

🤖 Generated with [Claude Code](https://claude.com/claude-code)
2026-07-03 16:49:53 +08:00

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---
source: crates/oxc_react_compiler/tests/snapshot.rs
input_file: crates/oxc_react_compiler/fixtures/try-catch-in-nested-scope.ts
---
import { c as _c } from "react/compiler-runtime";
import { mutate, setProperty, throwErrorWithMessageIf } from "shared-runtime";
function useFoo(t0) {
const $ = _c(6);
const { value, cond } = t0;
let t1;
let y;
if ($[0] !== cond || $[1] !== value) {
t1 = Symbol.for("react.early_return_sentinel");
bb0: {
y = [value];
let x;
if ($[4] !== cond) {
x = { cond };
try {
mutate(x);
throwErrorWithMessageIf(x.cond, "error");
} catch {
setProperty(x, "henderson");
t1 = x;
break bb0;
}
setProperty(x, "nevada");
$[4] = cond;
$[5] = x;
} else {
x = $[5];
}
y.push(x);
}
$[0] = cond;
$[1] = value;
$[2] = t1;
$[3] = y;
} else {
t1 = $[2];
y = $[3];
}
if (t1 !== Symbol.for("react.early_return_sentinel")) {
return t1;
}
return y;
}
export const FIXTURE_ENTRYPOINT = {
fn: useFoo,
params: [{
value: 4,
cond: true
}],
sequentialRenders: [
{
value: 4,
cond: true
},
{
value: 5,
cond: true
},
{
value: 5,
cond: false
}
]
};