CodeSampleX

示例

@babel/plugin-transform-class-properties 7.29.7

已验证示例 — npm @babel/plugin-transform-class-properties 7.29.7. contract 在 node 22 · linux alpine/x64 · docker 上运行并通过： Plugin default export is a function…

sha256:1423a35b1039a868ee0680b9c8ed7e55056cf3b4efca1929d36a97ed7a08d531

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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@1		 2026-08-21

案例

HOW
目标
verify pkg:npm/%40babel/plugin-transform-class-properties@7.29.7
包
创建时间
2026-08-21T06:38:15Z

契约

  1. Plugin default export is a function factory asserting Babel version compatibility
  2. Plugin factory returns an object named transform-class-properties with manipulateOptions, pre, and visitor
  3. manipulateOptions adds classProperties and classPrivateProperties to parser plugins array
  4. Plugin accepts options including loose mode configuration
  5. Visitor provides Class and ExportDefaultDeclaration visitor methods for AST transformation
  6. Module helpers instantiate the plugin, configure parser options, and extract visitors

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 pkg:npm/%40babel/plugin-transform-class-properties@7.29.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-class-properties@7.29.7

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:sha256:6668ee620e86053f2978bcd130b899d34a7da89151f7daed243918b6199de703","contract":["Plugin default export is a function factory asserting Babel version compatibility","Plugin factory returns an object named transform-class-properties with manipulateOptions, pre, and visitor","manipulateOptions adds classProperties and classPrivateProperties to parser plugins array","Plugin accepts options including loose mode configuration","Visitor provides Class and ExportDefaultDeclaration visitor methods for AST transformation","Module helpers instantiate the plugin, configure parser options, and extract visitors"],"goal":"verify pkg:npm/%40babel/plugin-transform-class-properties@7.29.7","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-class-properties@7.29.7"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40babel/plugin-transform-class-properties@7.29.7"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-class-properties@7.29.7","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-class-properties",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@babel/plugin-transform-class-properties": "7.29.7"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-class-properties@7.29.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-class-properties@7.29.7"
  ]
}
src/index.mjs
import classPropertiesPlugin from '@babel/plugin-transform-class-properties';

/**
 * Creates and initializes the transform-class-properties plugin instance.
 * @param {object} [api] - Babel API mock or instance with assertVersion.
 * @param {object} [options] - Plugin options such as { loose: boolean }.
 * @returns {object} Plugin instance object with name, manipulateOptions, pre, and visitor.
 */
export function createClassPropertiesPlugin(api, options = {}) {
  const plugin = classPropertiesPlugin.default || classPropertiesPlugin;
  const babelApi = api || {
    assertVersion: (range) => Boolean(range)
  };
  return plugin(babelApi, options);
}

/**
 * Applies class properties options manipulation to Babel parser options.
 * @param {object} pluginInstance - The plugin instance returned by createClassPropertiesPlugin.
 * @param {object} [parserOpts] - Parser options object containing plugins array.
 * @returns {{ parserPlugins: Array }}
 */
export function applyClassPropertiesParserOptions(pluginInstance, parserOpts = { plugins: [] }) {
  if (typeof pluginInstance.manipulateOptions === 'function') {
    pluginInstance.manipulateOptions({}, parserOpts);
  }
  return {
    parserPlugins: parserOpts.plugins
  };
}

/**
 * Retrieves the AST visitor from the plugin instance.
 * @param {object} pluginInstance - The plugin instance returned by createClassPropertiesPlugin.
 * @returns {object} The visitor object containing AST node visitor methods.
 */
export function getClassPropertiesVisitor(pluginInstance) {
  return pluginInstance.visitor || {};
}
test/contract.mjs
import assert from 'node:assert/strict';
import classPropertiesPlugin from '@babel/plugin-transform-class-properties';
import {
  createClassPropertiesPlugin,
  applyClassPropertiesParserOptions,
  getClassPropertiesVisitor
} from '../src/index.mjs';

// 1. Verify default export is the plugin factory function
const plugin = classPropertiesPlugin.default || classPropertiesPlugin;
assert.equal(typeof plugin, 'function', 'Plugin export must be a function');

// 2. Verify assertVersion check and returned plugin structure
let assertedVersionRange = null;
const mockApi = {
  assertVersion(range) {
    assertedVersionRange = range;
  }
};
const instance = plugin(mockApi, {});
assert.equal(assertedVersionRange, '^7.0.0-0 || ^8.0.0-0', 'Plugin must assert Babel version range');
assert.equal(typeof instance, 'object', 'Plugin factory must return an object');
assert.equal(instance.name, 'transform-class-properties', 'Plugin name must be transform-class-properties');
assert.equal(typeof instance.manipulateOptions, 'function', 'Plugin must provide manipulateOptions function');
assert.equal(typeof instance.pre, 'function', 'Plugin must provide pre function');
assert.equal(typeof instance.visitor, 'object', 'Plugin must provide visitor object');
assert.equal(typeof instance.visitor.Class, 'function', 'Visitor must provide Class method');
assert.equal(typeof instance.visitor.ExportDefaultDeclaration, 'function', 'Visitor must provide ExportDefaultDeclaration method');

// 3. Verify manipulateOptions adds classProperties and classPrivateProperties plugins
const parserOpts1 = { plugins: [] };
instance.manipulateOptions({}, parserOpts1);
assert.deepEqual(
  parserOpts1.plugins,
  ['classProperties', 'classPrivateProperties'],
  'manipulateOptions must add classProperties and classPrivateProperties to parser plugins'
);

// 4. Verify manipulateOptions preserves existing parser plugins
const parserOpts2 = { plugins: ['jsx'] };
instance.manipulateOptions({}, parserOpts2);
assert.deepEqual(
  parserOpts2.plugins,
  ['jsx', 'classProperties', 'classPrivateProperties'],
  'manipulateOptions must preserve existing parser plugins'
);

// 5. Verify loose option configuration
const instanceLoose = plugin(mockApi, { loose: true });
assert.equal(instanceLoose.name, 'transform-class-properties');
assert.equal(typeof instanceLoose.visitor, 'object');
assert.equal(typeof instanceLoose.visitor.Class, 'function');

const instanceNonLoose = plugin(mockApi, { loose: false });
assert.equal(instanceNonLoose.name, 'transform-class-properties');
assert.equal(typeof instanceNonLoose.visitor, 'object');
assert.equal(typeof instanceNonLoose.visitor.Class, 'function');

// 6. Verify helper functions from src/index.mjs
const helperInstance = createClassPropertiesPlugin();
assert.equal(helperInstance.name, 'transform-class-properties');

const helperParserResult = applyClassPropertiesParserOptions(helperInstance);
assert.deepEqual(helperParserResult.parserPlugins, ['classProperties', 'classPrivateProperties']);

const visitor = getClassPropertiesVisitor(helperInstance);
assert.equal(typeof visitor.Class, 'function');
assert.equal(typeof visitor.ExportDefaultDeclaration, 'function');

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

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