CodeSampleX

Exemple

@babel/plugin-syntax-async-generators 7.8.4: parse async generator function syntax using @babel/plugin-syntax-async-generators

Échantillon vérifié pour npm @babel/plugin-syntax-async-generators 7.8.4: parse async generator function syntax using @babel/plugin-syntax-async-generators.…

sha256:e8d76b8054a579c05a5b0c37864379a38051fbd536a346e5ec7e1debc67368ff

Ce réseau offre une seule chose : un échantillon qui compile. Il l'a exécuté dans un bac à sable et conservé le reçu signé. Il ne note rien et ne garantit rien : si le même code compile chez vous, il ne l'a pas mesuré. Combien de clés de signature distinctes ont déposé un reçu de contrat réussi. Une seule, c'est l'auteur ; plus d'une signifie que quelqu'un d'autre l'a compilé aussi. Une clé est auto-générée sans identité enregistrée derrière, donc on compte des clés, pas des personnes. MIT-0

Preuves d'exécution

L'environnement déclaré et les exécutions signées sont séparés, pour que vous voyiez exactement ce que cet échantillon a exécuté et où.

Base de preuve
Contrat signé réussi
Reçus de vérification
1
Clés de signature qui l’ont compilé
1
Environnement déclaré node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Environnements des exécutions de vérification

Environnement Contrat Étapes Exécution
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-26

Cas

HOW
Objectif
parse async generator function syntax using @babel/plugin-syntax-async-generators
Paquets
Symboles
  • @babel/plugin-syntax-async-generators
Environnement
node 22.23.2
Créé
2026-08-26T14:17:25Z

Contrat

  1. plugin exports a default plugin factory asserting Babel 7 compatibility
  2. plugin factory returns plugin descriptor with name syntax-async-generators
  3. manipulateOptions appends asyncGenerators to parser plugins list
  4. manipulateOptions preserves existing parser plugins when adding asyncGenerators
  5. configureParserOptions helper creates plugin instance and updates parserOpts
  6. hasAsyncGeneratorsSyntax accurately checks presence of asyncGenerators in parser options

Fichiers

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Télécharger l’artefact source (tar.gz)

Code source

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: parse async generator function syntax using @babel/plugin-syntax-async-generators
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-syntax-async-generators@7.8.4
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - packageManager: npm@10.9.8
  - runtime: node@22.23.2

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:d9e93103ec19f07dddb30d9e2f0a36b21f2cfecacf247bbe818d3809be88132b","constraints":{"executionContext":"node"},"contract":["plugin exports a default plugin factory asserting Babel 7 compatibility","plugin factory returns plugin descriptor with name syntax-async-generators","manipulateOptions appends asyncGenerators to parser plugins list","manipulateOptions preserves existing parser plugins when adding asyncGenerators","configureParserOptions helper creates plugin instance and updates parserOpts","hasAsyncGeneratorsSyntax accurately checks presence of asyncGenerators in parser options"],"goal":"parse async generator function syntax using @babel/plugin-syntax-async-generators","kind":"HOW","packages":["pkg:npm/%40babel/plugin-syntax-async-generators@7.8.4"],"schemaVersion":1,"symbols":["@babel/plugin-syntax-async-generators"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40babel/plugin-syntax-async-generators@7.8.4"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-syntax-async-generators@7.8.4","symbols":["@babel/plugin-syntax-async-generators"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-syntax-async-generators",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/plugin-syntax-async-generators": "7.8.4"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "parse async generator function syntax using @babel/plugin-syntax-async-generators",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-syntax-async-generators@7.8.4"
  ],
  "symbols": [
    "@babel/plugin-syntax-async-generators"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
src/index.mjs
import rawPlugin from "@babel/plugin-syntax-async-generators";

export const pluginSyntaxAsyncGenerators =
  typeof rawPlugin === "function" ? rawPlugin : rawPlugin.default || rawPlugin;

export function createPluginInstance(api = {}, options = {}) {
  const normalizedApi = {
    assertVersion: (range) => {
      if (typeof api.assertVersion === "function") {
        api.assertVersion(range);
      }
    },
    ...api
  };
  return pluginSyntaxAsyncGenerators(normalizedApi, options);
}

export function applySyntaxPlugin(pluginInstance, parserOpts = {}) {
  if (!pluginInstance || typeof pluginInstance.manipulateOptions !== "function") {
    throw new Error("Invalid plugin instance: missing manipulateOptions");
  }
  if (!parserOpts.plugins) {
    parserOpts.plugins = [];
  }
  pluginInstance.manipulateOptions({}, parserOpts);
  return parserOpts;
}

export function configureParserOptions(parserOpts = {}, options = {}, api = {}) {
  const instance = createPluginInstance(api, options);
  return applySyntaxPlugin(instance, parserOpts);
}

export function hasAsyncGeneratorsSyntax(parserOpts = {}) {
  return Array.isArray(parserOpts.plugins) && parserOpts.plugins.includes("asyncGenerators");
}
test/contract.mjs
import assert from "node:assert/strict";
import rawPluginModule from "@babel/plugin-syntax-async-generators";
import {
  pluginSyntaxAsyncGenerators,
  createPluginInstance,
  applySyntaxPlugin,
  configureParserOptions,
  hasAsyncGeneratorsSyntax
} from "../src/index.mjs";

const rawPlugin =
  typeof rawPluginModule === "function"
    ? rawPluginModule
    : rawPluginModule.default || rawPluginModule;

// Contract 1: plugin exports a default plugin factory asserting Babel 7 compatibility
{
  assert.equal(typeof pluginSyntaxAsyncGenerators, "function");
  assert.equal(typeof rawPlugin, "function");

  let assertedVersion = null;
  const api = {
    assertVersion: (v) => {
      assertedVersion = v;
    }
  };
  const instance = rawPlugin(api, {});
  assert.equal(assertedVersion, 7);
  assert.ok(instance);

  const failingApi = {
    assertVersion: (v) => {
      if (v !== 7) throw new Error(`Unsupported version: ${v}`);
      throw new Error("Simulated version mismatch");
    }
  };
  assert.throws(() => rawPlugin(failingApi, {}), /Simulated version mismatch/);
}

// Contract 2: plugin factory returns plugin descriptor with name syntax-async-generators
{
  const api = {
    assertVersion: () => {}
  };
  const instance = createPluginInstance(api, {});
  assert.equal(typeof instance, "object");
  assert.equal(instance.name, "syntax-async-generators");
  assert.equal(typeof instance.manipulateOptions, "function");
}

// Contract 3: manipulateOptions appends asyncGenerators to parser plugins list
{
  const instance = createPluginInstance({ assertVersion: () => {} });
  const parserOpts = { plugins: ["typescript"] };

  applySyntaxPlugin(instance, parserOpts);

  assert.deepEqual(parserOpts.plugins, ["typescript", "asyncGenerators"]);
}

// Contract 4: manipulateOptions preserves existing parser plugins when adding asyncGenerators
{
  const instance = createPluginInstance({ assertVersion: () => {} });
  const initialPlugins = ["jsx", "decorators-legacy", "dynamicImport"];
  const parserOpts = { plugins: [...initialPlugins] };

  applySyntaxPlugin(instance, parserOpts);

  assert.equal(parserOpts.plugins.length, 4);
  assert.deepEqual(parserOpts.plugins.slice(0, 3), initialPlugins);
  assert.equal(parserOpts.plugins[3], "asyncGenerators");
}

// Contract 5: configureParserOptions helper creates plugin instance and updates parserOpts
{
  const emptyParserOpts = {};
  const result = configureParserOptions(emptyParserOpts);

  assert.ok(Array.isArray(result.plugins));
  assert.ok(result.plugins.includes("asyncGenerators"));
  assert.equal(emptyParserOpts, result);
}

// Contract 6: hasAsyncGeneratorsSyntax accurately checks presence of asyncGenerators in parser options
{
  assert.equal(hasAsyncGeneratorsSyntax({}), false);
  assert.equal(hasAsyncGeneratorsSyntax({ plugins: ["jsx", "flow"] }), false);
  assert.equal(hasAsyncGeneratorsSyntax({ plugins: ["jsx", "asyncGenerators"] }), true);
}

console.log("All @babel/plugin-syntax-async-generators contract tests passed successfully.");

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