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샘플

@babel/plugin-transform-async-to-generator 8.0.1

검증된 샘플 — npm @babel/plugin-transform-async-to-generator 8.0.1. node 22 · linux alpine/x64 · docker에서 contract를 실행해 통과했습니다: assert…

sha256:e1c3fbc82def7215f00e037dbec2e17753574611a4aa50eb6e35f89326e0cbb1

이 네트워크가 제공하는 것은 하나입니다. 빌드되는 샘플. 샌드박스에서 돌리고 서명된 영수증을 보관합니다. 등급을 매기지 않고 무엇도 보증하지 않습니다 — 같은 코드가 당신 환경에서 빌드되는지는 측정한 적이 없습니다. 통과한 계약 영수증을 낸 서로 다른 서명 키의 수입니다. 하나면 작성자 혼자이고, 둘 이상이면 다른 사람도 빌드했다는 뜻입니다. 키는 스스로 만드는 것이고 뒤에 등록된 신원이 없으므로, 세는 것은 사람이 아니라 키입니다. MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

증거 기준
서명된 컨트랙트 통과
검증 영수증
1
빌드한 서명 키
1
선언된 환경 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

검증 실행 환경

환경 컨트랙트 단계 실행일
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…		 2026-08-27

케이스

HOW
목표
verify pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1
패키지
환경
node 22.23.2
생성일
2026-08-27T20:53:55Z

컨트랙트

  1. assert @babel/plugin-transform-async-to-generator exports a Babel plugin factory function
  2. assert async function declaration is transformed into generator function wrapped in _asyncToGenerator
  3. assert async function expression and arrow function are transformed into generator functions
  4. assert async class method and object method are transformed into generator methods
  5. assert transformed async function executes and resolves returned value correctly
  6. assert transformed async function propagates rejected errors properly
  7. assert custom module and method options configure custom coroutine helper import
  8. assert synchronous non-async functions remain untransformed without generator wrapping

파일

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

소스 아티팩트 내려받기 (tar.gz)

소스

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: verify pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1
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:sha256:5edf3a9a69ace3e38b4200336f9f6ceaaa3cbf45ac0c6cac2aaa38dec65a08e1","constraints":{"executionContext":"node"},"contract":["assert @babel/plugin-transform-async-to-generator exports a Babel plugin factory function","assert async function declaration is transformed into generator function wrapped in _asyncToGenerator","assert async function expression and arrow function are transformed into generator functions","assert async class method and object method are transformed into generator methods","assert transformed async function executes and resolves returned value correctly","assert transformed async function propagates rejected errors properly","assert custom module and method options configure custom coroutine helper import","assert synchronous non-async functions remain untransformed without generator wrapping"],"goal":"verify pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1"],"schemaVersion":1},"contractCommand":["node","test/contract.js"],"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-transform-async-to-generator@8.0.1"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1","verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "sample-babel-plugin-transform-async-to-generator",
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      "name": "sample-babel-plugin-transform-async-to-generator",
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package.json
{
  "name": "sample-babel-plugin-transform-async-to-generator",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification sample for @babel/plugin-transform-async-to-generator",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "@babel/plugin-transform-async-to-generator": "8.0.1"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-async-to-generator@8.0.1"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
src/index.js
'use strict';

const transformAsyncToGenerator = require('@babel/plugin-transform-async-to-generator');
const babel = require('@babel/core');

/**
 * Transforms JavaScript code using the async-to-generator transform plugin.
 *
 * @param {string} sourceCode - The input JavaScript source code.
 * @param {object} [options] - Options passed to the plugin (e.g. module, method).
 * @returns {string} The transformed JavaScript code.
 */
function transformAsyncCode(sourceCode, options = {}) {
  const plugin = typeof transformAsyncToGenerator.default === 'function'
    ? transformAsyncToGenerator.default
    : transformAsyncToGenerator;

  const plugins = Object.keys(options).length > 0
    ? [[plugin, options]]
    : [plugin];

  const result = babel.transformSync(sourceCode, {
    plugins,
    configFile: false,
    babelrc: false,
  });
  return result ? result.code : '';
}

/**
 * Transforms and executes JavaScript code containing async functions.
 *
 * @param {string} sourceCode - JavaScript snippet that sets or exports a function/value.
 * @param {object} [options] - Plugin options.
 * @returns {*} The evaluated module export or result.
 */
function evaluateAsyncCode(sourceCode, options = {}) {
  const transformed = transformAsyncCode(sourceCode, options);
  const m = { exports: {} };
  const fn = new Function('module', 'exports', transformed);
  fn(m, m.exports);
  return m.exports;
}

module.exports = {
  transformAsyncToGenerator,
  transformAsyncCode,
  evaluateAsyncCode,
};
test/contract.js
'use strict';

const assert = require('node:assert/strict');
const transformAsyncToGenerator = require('@babel/plugin-transform-async-to-generator');
const {
  transformAsyncCode,
  evaluateAsyncCode,
} = require('../src/index.js');

async function runContractTests() {
  // Contract 1: assert @babel/plugin-transform-async-to-generator exports a Babel plugin factory function
  {
    assert.strictEqual(typeof transformAsyncToGenerator, 'object', 'Plugin module should be an object');
    assert.strictEqual(typeof transformAsyncToGenerator.default, 'function', 'Plugin default export should be a function');
  }

  // Contract 2: assert async function declaration is transformed into generator function wrapped in _asyncToGenerator
  {
    const code = `
      async function fetchData(x) {
        const val = await Promise.resolve(x * 2);
        return val + 1;
      }
    `;
    const transformed = transformAsyncCode(code);
    assert.ok(transformed.includes('_asyncToGenerator'), 'Should inject _asyncToGenerator helper');
    assert.ok(transformed.includes('function*'), 'Should transform async body into generator function*');
    assert.ok(!transformed.includes('async function'), 'Should not contain async function declaration in output');
  }

  // Contract 3: assert async function expression and arrow function are transformed into generator functions
  {
    const code = `
      const fnExpr = async function (a, b) {
        return await Promise.resolve(a + b);
      };
      const arrowFn = async (msg) => {
        return await Promise.resolve(msg);
      };
    `;
    const transformed = transformAsyncCode(code);
    assert.ok(transformed.includes('_asyncToGenerator'), 'Should use _asyncToGenerator for expressions and arrow functions');
    assert.ok(transformed.includes('function*'), 'Should convert expressions and arrow functions into generator functions');
    assert.ok(!transformed.includes('async function'), 'Should remove async keyword from function expressions');
    assert.ok(!transformed.includes('async ('), 'Should remove async keyword from arrow functions');
  }

  // Contract 4: assert async class method and object method are transformed into generator methods
  {
    const code = `
      class Service {
        async run(task) {
          return await Promise.resolve(task.toUpperCase());
        }
      }
      const obj = {
        async compute(n) {
          return await Promise.resolve(n * 10);
        }
      };
    `;
    const transformed = transformAsyncCode(code);
    assert.ok(transformed.includes('_asyncToGenerator'), 'Should use _asyncToGenerator for class and object methods');
    assert.ok(transformed.includes('function*'), 'Should transform method bodies into generator functions');
  }

  // Contract 5: assert transformed async function executes and resolves returned value correctly
  {
    const code = `
      module.exports = async function sumAsync(items) {
        let total = 0;
        for (const item of items) {
          total += await Promise.resolve(item);
        }
        return total;
      };
    `;
    const sumAsync = evaluateAsyncCode(code);
    assert.strictEqual(typeof sumAsync, 'function', 'Evaluated module export should be a callable function');

    const promise = sumAsync([10, 20, 30]);
    assert.ok(promise instanceof Promise, 'Transformed function should return a Promise');
    const result = await promise;
    assert.strictEqual(result, 60, 'Resolved promise result should match expected total');
  }

  // Contract 6: assert transformed async function propagates rejected errors properly
  {
    const code = `
      module.exports = async function failingAsync(shouldFail, message) {
        await Promise.resolve();
        if (shouldFail) {
          throw new Error(message);
        }
        return "ok";
      };
    `;
    const failingAsync = evaluateAsyncCode(code);
    const successResult = await failingAsync(false, 'no error');
    assert.strictEqual(successResult, 'ok');

    await assert.rejects(
      async () => {
        await failingAsync(true, 'operation failed');
      },
      {
        name: 'Error',
        message: 'operation failed'
      },
      'Transformed async function should reject when error is thrown'
    );
  }

  // Contract 7: assert custom module and method options configure custom coroutine helper import
  {
    const code = `
      async function processJob(id) {
        return await Promise.resolve(id);
      }
    `;
    const transformed = transformAsyncCode(code, {
      module: 'bluebird',
      method: 'coroutine',
    });
    assert.ok(transformed.includes('import { coroutine as _coroutine } from "bluebird"'), 'Should import custom coroutine from bluebird');
    assert.ok(transformed.includes('_coroutine(function*'), 'Should wrap generator with custom _coroutine');
    assert.ok(!transformed.includes('_asyncToGenerator'), 'Should not use default _asyncToGenerator when custom coroutine is configured');
  }

  // Contract 8: assert synchronous non-async functions remain untransformed without generator wrapping
  {
    const code = `
      function regularSync(a, b) {
        return a + b;
      }
      const syncArrow = (x) => x * 2;
    `;
    const transformed = transformAsyncCode(code);
    assert.ok(!transformed.includes('_asyncToGenerator'), 'Sync functions should not have _asyncToGenerator');
    assert.ok(!transformed.includes('function*'), 'Sync functions should not be transformed to generator functions');
  }

  console.log('All @babel/plugin-transform-async-to-generator contract assertions passed.');
}

runContractTests().catch((err) => {
  console.error(err);
  process.exit(1);
});

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