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feat: experimental oxc transform #113

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feat: experimental oxc transform #113

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361a70d
feat: add experimental oxc-based transform and plugin
TheAlexLichter Aug 14, 2025
cc10e8e
chore: document
TheAlexLichter Aug 14, 2025
1a3f666
chore: refactor and use normal snapshots
TheAlexLichter Aug 14, 2025
14580ce
chore: fix build
TheAlexLichter Aug 14, 2025
0a4c7ec
Merge branch 'main' into feat/use-oxc
pi0 Dec 16, 2025
b283971
clone defaults
pi0 Dec 16, 2025
c6581e3
keep inline snapshot to reduce diff
pi0 Dec 16, 2025
03dbba0
run tests against both
pi0 Dec 16, 2025
831b25d
Merge branch 'main' into feat/use-oxc
TheAlexLichter Jun 24, 2026
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11 changes: 11 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,17 @@ unctxPlugin.vite();
unctxPlugin.webpack();
```

Acorn is used by default. To use the experimental Oxc transform, install the
optional parser dependencies and select it in the plugin options:

```sh
pnpm add oxc-parser oxc-walker
```
Comment on lines +142 to +144

@coderabbitai coderabbitai Bot Jun 24, 2026

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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win

Install the optional Oxc packages as dev dependencies.

These packages are only needed for the build-time transform, so pnpm add puts them in runtime dependencies unnecessarily.

Proposed fix 
-pnpm add oxc-parser oxc-walker
+pnpm add -D oxc-parser oxc-walker
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
```sh
pnpm add oxc-parser oxc-walker
```
🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@README.md` around lines 142 - 144, The README install command is adding the
optional Oxc packages as runtime dependencies, but they should be installed as
dev dependencies for the build-time transform. Update the install instruction
that mentions oxc-parser and oxc-walker to use the dev-dependency form, and keep
the guidance aligned with their build-only usage.


```js
unctxPlugin.vite({ parser: "oxc" });
```

Use `ctx.callAsync` instead of `ctx.call`:

```js
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8 changes: 7 additions & 1 deletion build.config.ts
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Expand Up @@ -4,7 +4,13 @@ export default defineBuildConfig({
entries: [
{
type: "bundle",
input: ["src/index.ts", "src/transform.ts", "src/plugin.ts"],
input: [
"src/index.ts",
"src/transform.ts",
"src/transform/acorn.ts",
"src/transform/oxc.ts",
"src/plugin.ts",
],
},
],
});
17 changes: 17 additions & 0 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@
"exports": {
".": "./dist/index.mjs",
"./transform": "./dist/transform.mjs",
"./transform/acorn": "./dist/transform/acorn.mjs",
"./transform/oxc": "./dist/transform/oxc.mjs",
"./plugin": "./dist/plugin.mjs"
},
"types": "./dist/index.d.mts",
Expand All @@ -30,14 +32,29 @@
"magic-string": "^0.30.21",
"unplugin": "^2.3.11"
},
"peerDependencies": {
"oxc-parser": "^0.137.0",
"oxc-walker": "^1.0.0"
},
"peerDependenciesMeta": {
"oxc-parser": {
"optional": true
},
"oxc-walker": {
"optional": true
}
},
"devDependencies": {
"@types/estree": "^1.0.8",
"@types/node": "^25.0.2",
"@vitest/coverage-v8": "^4.0.16",
"changelogen": "^0.6.2",
"eslint": "^9.39.2",
"eslint-config-unjs": "^0.5.0",
"jiti": "^2.6.1",
"obuild": "^0.4.8",
"oxc-parser": "^0.137.0",
"oxc-walker": "^1.0.0",
"prettier": "^3.7.4",
"typescript": "^5.9.3",
"vitest": "^4.0.16"
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