CodeSampleX

示例

@babel/plugin-transform-modules-commonjs 7.29.7: transform

已验证示例 — npm @babel/plugin-transform-modules-commonjs 7.29.7: transform. contract 在 node 22 · linux alpine/x64 · docker 上运行并通过.

sha256:1b8023acf2b16e0629f25e1554f187f14243ed46578eccfc2eaaa30905ffc409

本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。 提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。 MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

证据依据
签名契约通过
验证回执
1
构建过它的签名密钥
1
声明的环境 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

验证运行环境

环境 契约 阶段 运行日期
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

案例

HOW
目标
verify transform in pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7
包
符号
  • transform
环境
node 22.23.2
创建时间
2026-08-26T04:43:51Z

契约

  1. Plugin default export is a function factory asserting Babel version 7
  2. Plugin factory returns a plugin object named transform-modules-commonjs with Program visitor
  3. Transforms ES named import and export declarations into CommonJS require and exports
  4. Transforms default import and default export declarations with interop helper
  5. Transforms namespace wildcard imports with interop wildcard helper
  6. Transforms re-export named and re-export star declarations into dynamic getters on exports
  7. Transforms side-effect only imports into plain require calls
  8. Transforms dynamic imports when proposal flag is active
  9. Emits lazy loading wrapper functions when lazy option is enabled
  10. Emits simple assignment exports and __esModule flag when loose option is true
  11. Omits use strict directive when strictMode option is false
  12. Omits __esModule export definition when strict option is true
  13. Imports default export without interop helper when noInterop option is true
  14. Executes custom module wrapper hooks registered via defineCommonJSHook

文件

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

下载源代码构件 (tar.gz)

源代码

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 transform in pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7
Demonstrate these symbols/APIs:
  - transform

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:eb4063ee5eece6882035a530e3ad021037da54430ff9e1e3457031b8103c2733","constraints":{"executionContext":"node"},"contract":["Plugin default export is a function factory asserting Babel version 7","Plugin factory returns a plugin object named transform-modules-commonjs with Program visitor","Transforms ES named import and export declarations into CommonJS require and exports","Transforms default import and default export declarations with interop helper","Transforms namespace wildcard imports with interop wildcard helper","Transforms re-export named and re-export star declarations into dynamic getters on exports","Transforms side-effect only imports into plain require calls","Transforms dynamic imports when proposal flag is active","Emits lazy loading wrapper functions when lazy option is enabled","Emits simple assignment exports and __esModule flag when loose option is true","Omits use strict directive when strictMode option is false","Omits __esModule export definition when strict option is true","Imports default export without interop helper when noInterop option is true","Executes custom module wrapper hooks registered via defineCommonJSHook"],"goal":"verify transform in pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7"],"schemaVersion":1,"symbols":["transform"]},"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-transform-modules-commonjs@7.29.7"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7","symbols":["transform"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-modules-commonjs",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@babel/plugin-transform-modules-commonjs": "7.29.7"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify transform in pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-modules-commonjs@7.29.7"
  ],
  "symbols": [
    "transform"
  ]
}
src/index.mjs
import * as babel from '@babel/core';
import pluginTransformModulesCommonjs, { defineCommonJSHook } from '@babel/plugin-transform-modules-commonjs';

/**
 * Extracts plugin function from module namespace or default export.
 * @param {any} mod
 * @returns {Function}
 */
export function getPlugin(mod = pluginTransformModulesCommonjs) {
  if (typeof mod === 'function') return mod;
  if (typeof mod.default === 'function') return mod.default;
  if (typeof mod.default?.default === 'function') return mod.default.default;
  return mod;
}

/**
 * Creates an instance of the Babel CommonJS module transform plugin.
 * @param {object} [api] - Babel plugin API object.
 * @param {object} [options] - Plugin configuration options.
 * @returns {object} Babel plugin instance object.
 */
export function createTransformPlugin(api, options = {}) {
  const plugin = getPlugin();
  const babelApi = api || {
    types: babel.types,
    template: babel.template,
    traverse: babel.traverse,
    assertVersion: (range) => Boolean(range)
  };
  return plugin(babelApi, options);
}

/**
 * Transforms JavaScript code using @babel/plugin-transform-modules-commonjs.
 * @param {string} source - ES module source code.
 * @param {object} [pluginOptions] - Options passed to the plugin.
 * @param {object} [babelOptions] - Additional Babel transformSync options.
 * @returns {import('@babel/core').BabelFileResult} Babel transform result.
 */
export function transformCommonjs(source, pluginOptions = {}, babelOptions = {}) {
  const plugin = getPlugin();
  return babel.transformSync(source, {
    plugins: [[plugin, pluginOptions]],
    configFile: false,
    babelrc: false,
    ...babelOptions
  });
}

export { defineCommonJSHook };
test/contract.mjs
import assert from 'node:assert/strict';
import * as babel from '@babel/core';
import pluginTransformModulesCommonjs, { defineCommonJSHook } from '@babel/plugin-transform-modules-commonjs';
import { getPlugin, createTransformPlugin, transformCommonjs } from '../src/index.mjs';

const plugin = getPlugin(pluginTransformModulesCommonjs);

// 1. Plugin default export is a function factory asserting Babel version 7
assert.equal(typeof plugin, 'function', 'Plugin export must be a function');
let assertedVersion = null;
const mockApi = {
  types: babel.types,
  template: babel.template,
  traverse: babel.traverse,
  assertVersion(v) { assertedVersion = v; },
  assumption(name) { return false; }
};
const pluginObj = plugin(mockApi, {});
assert.equal(assertedVersion, 7, 'Plugin must assert Babel version 7');

// 2. Plugin factory returns a plugin object named transform-modules-commonjs with Program visitor
assert.equal(pluginObj.name, 'transform-modules-commonjs', 'Plugin name must be transform-modules-commonjs');
assert.ok(pluginObj.visitor && typeof pluginObj.visitor.Program === 'object', 'Plugin must define Program visitor');

// 3. Transforms ES named import and export declarations into CommonJS require and exports
const cNamed = transformCommonjs(`
import { foo, bar } from 'dep';
export const value = foo(bar);
`);
assert.ok(cNamed.code.includes('require("dep")'), 'Imports should transform to require');
assert.ok(cNamed.code.includes('exports.value = void 0;'), 'Export should be initialized');
assert.ok(cNamed.code.includes('exports.value ='), 'Export should be assigned');
assert.ok(cNamed.code.includes('Object.defineProperty(exports, "__esModule"'), 'Should define __esModule');

// 4. Transforms default import and default export declarations with interop helper
const cDefault = transformCommonjs(`
import myDefault from 'pkg';
export default function main() { return myDefault(); }
`);
assert.ok(cDefault.code.includes('_interopRequireDefault'), 'Default import uses interop helper');
assert.ok(cDefault.code.includes('exports.default = main;'), 'Default export sets exports.default');

// 5. Transforms namespace wildcard imports with interop wildcard helper
const cWildcard = transformCommonjs(`
import * as ns from 'pkg';
export const all = ns;
`);
assert.ok(cWildcard.code.includes('_interopRequireWildcard'), 'Namespace import uses interopRequireWildcard');

// 6. Transforms re-export named and re-export star declarations into dynamic getters on exports
const cReExport = transformCommonjs(`
export { alpha, beta as gamma } from 'mod';
export * from 'other';
`);
assert.ok(cReExport.code.includes('Object.defineProperty(exports, "alpha"'), 'Re-export defines getter for alpha');
assert.ok(cReExport.code.includes('Object.defineProperty(exports, "gamma"'), 'Re-export defines getter for gamma');
assert.ok(cReExport.code.includes('require("mod")'), 'Re-export requires mod');
assert.ok(cReExport.code.includes('require("other")'), 'Wildcard re-export requires other');

// 7. Transforms side-effect only imports into plain require calls
const cSideEffect = transformCommonjs(`
import 'polyfill';
`);
assert.ok(cSideEffect.code.includes('require("polyfill");'), 'Side-effect import transforms to bare require');

// 8. Transforms dynamic imports when proposal flag is active
const cDynamic = babel.transformSync(`async function load() { return import('./lazy-mod'); }`, {
  plugins: [
    function(api) {
      const p = plugin(api, {});
      return {
        ...p,
        pre(file) {
          file.set('@babel/plugin-proposal-dynamic-import', true);
          p.pre?.call(this, file);
        }
      };
    }
  ],
  configFile: false,
  babelrc: false
});
assert.ok(cDynamic.code.includes('Promise.resolve()'), 'Dynamic import transforms with Promise.resolve');
assert.ok(cDynamic.code.includes("require('./lazy-mod')") || cDynamic.code.includes('require("./lazy-mod")'), 'Dynamic import requires module');

// 9. Emits lazy loading wrapper functions when lazy option is enabled
const cLazy = transformCommonjs(`
import { heavy } from 'heavy-module';
import { util } from './local-util';
export function run() { return heavy(util()); }
`, { lazy: true });
assert.ok(cLazy.code.includes('function _heavyModule()'), 'Lazy option creates wrapper function for non-relative imports');
assert.ok(cLazy.code.includes('require("heavy-module")'), 'Lazy function requires module on demand');

// 10. Emits simple assignment exports and __esModule flag when loose option is true
const cLoose = transformCommonjs(`
export const version = '2.0.0';
export function helper() {}
`, { loose: true });
assert.ok(cLoose.code.includes('exports.__esModule = true;'), 'Loose mode assigns exports.__esModule directly');
assert.ok(cLoose.code.includes('exports.helper = helper;'), 'Loose mode assigns helper directly');

// 11. Omits use strict directive when strictMode option is false
const cNoStrict = transformCommonjs(`export const a = 1;`, { strictMode: false });
assert.ok(!cNoStrict.code.startsWith('"use strict";'), 'strictMode false omits "use strict"');

// 12. Omits __esModule export definition when strict option is true
const cStrict = transformCommonjs(`export const secret = 42;`, { strict: true });
assert.ok(!cStrict.code.includes('__esModule'), 'strict true omits __esModule');

// 13. Imports default export without interop helper when noInterop option is true
const cNoInterop = transformCommonjs(`import helper from 'helper'; const x = helper();`, { noInterop: true });
assert.ok(!cNoInterop.code.includes('_interopRequireDefault'), 'noInterop true does not include interop helper');

// 14. Executes custom module wrapper hooks registered via defineCommonJSHook
let hookCalled = false;
const cHook = babel.transformSync(`import { x } from 'hooked'; export const val = x;`, {
  plugins: [
    function(api) {
      const p = plugin(api, { lazy: true });
      return {
        ...p,
        pre(file) {
          defineCommonJSHook(file, {
            wrapReference(ref, payload) {
              hookCalled = true;
              return ref;
            }
          });
          p.pre?.call(this, file);
        }
      };
    }
  ],
  configFile: false,
  babelrc: false
});
assert.ok(hookCalled, 'defineCommonJSHook custom hook was executed during transformation');

// Helper function createTransformPlugin verification
const helperPlugin = createTransformPlugin();
assert.equal(helperPlugin.name, 'transform-modules-commonjs', 'Helper createTransformPlugin must return valid plugin');

console.log('Contract assertions passed.');

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