CodeSampleX

Beispiel

@babel/plugin-transform-block-scoped-functions 8.0.1: default

Verifiziertes Beispiel für npm @babel/plugin-transform-block-scoped-functions 8.0.1: default. Der Vertrag lief auf node 22 · linux debian/x64 · docker und…

sha256:b8a128eeb876a694f0e7aefda1ab703ffb6d448ddd6bb8ce92e9c204a2801465

Dieses Netzwerk bietet eine Sache: ein Sample, das baut. Es hat es in einer Sandbox ausgeführt und die signierte Quittung behalten. Es bewertet nichts und garantiert nichts — ob derselbe Code bei Ihnen baut, hat es nicht gemessen. Wie viele verschiedene Signaturschlüssel eine bestandene Vertragsquittung eingereicht haben. Einer ist der Autor allein; mehr als einer heißt, jemand anderes hat es auch gebaut. Ein Schlüssel wird selbst erzeugt und hat keine registrierte Identität dahinter — gezählt werden Schlüssel, nicht Personen. MIT-0

Ausführungsbelege

Die deklarierte Umgebung und die signierten Läufe stehen getrennt, damit Sie genau sehen, was dieses Sample ausgeführt hat und wo.

Beleggrundlage
Signierter Vertrag bestanden
Verifizierungsbelege
1
Signaturschlüssel, die es gebaut haben
1
Deklarierte Umgebung linux 24 · ubuntu · glibc 2.39 x64 npm

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-05

Fall

HOW
Ziel
verify @babel/plugin-transform-block-scoped-functions.default in pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1
Pakete
Symbole
  • @babel/plugin-transform-block-scoped-functions.default
Erstellt
2026-09-05T19:19:21Z

Contract

  1. Plugin default export is a function factory asserting Babel version compatibility
  2. Plugin factory returns an object named transform-block-scoped-functions with visitor methods for BlockStatement, SwitchStatement, and Loop
  3. Plugin transforms block-scoped function declarations into let variable declarations in strict mode
  4. Plugin transforms block-scoped function declarations into var variable declarations in non-strict script mode
  5. Plugin transforms async and generator block-scoped function declarations into let variable declarations
  6. Plugin transforms function declarations within switch case statements into hoisted let declarations
  7. Plugin leaves top-level and function-level declarations untransformed
  8. Module helpers create plugin instance, validate structure, and transform code using the plugin

Dateien

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

Quellartefakt herunterladen (tar.gz)

Quelltext

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 @babel/plugin-transform-block-scoped-functions.default in pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1
Demonstrate these symbols/APIs:
  - @babel/plugin-transform-block-scoped-functions.default

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:e24a9739f36a24bb69e4ac83b4bfd3daa4890136c310c757269d34ff0580fa33","contract":["Plugin default export is a function factory asserting Babel version compatibility","Plugin factory returns an object named transform-block-scoped-functions with visitor methods for BlockStatement, SwitchStatement, and Loop","Plugin transforms block-scoped function declarations into let variable declarations in strict mode","Plugin transforms block-scoped function declarations into var variable declarations in non-strict script mode","Plugin transforms async and generator block-scoped function declarations into let variable declarations","Plugin transforms function declarations within switch case statements into hoisted let declarations","Plugin leaves top-level and function-level declarations untransformed","Module helpers create plugin instance, validate structure, and transform code using the plugin"],"goal":"verify @babel/plugin-transform-block-scoped-functions.default in pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1"],"schemaVersion":1,"symbols":["@babel/plugin-transform-block-scoped-functions.default"]},"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-block-scoped-functions@8.0.1"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1","symbols":["@babel/plugin-transform-block-scoped-functions.default"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-block-scoped-functions",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "license": "MIT-0",
  "dependencies": {
    "@babel/plugin-transform-block-scoped-functions": "8.0.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @babel/plugin-transform-block-scoped-functions.default in pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-block-scoped-functions@8.0.1"
  ],
  "symbols": [
    "@babel/plugin-transform-block-scoped-functions.default"
  ]
}
src/index.mjs
import blockScopedFunctionsPlugin from '@babel/plugin-transform-block-scoped-functions';
import * as babel from '@babel/core';

/**
 * Creates and initializes the block-scoped-functions plugin instance.
 * @param {object} [api] - Optional Babel API object with assertVersion.
 * @param {object} [options] - Optional plugin options.
 * @returns {object} Plugin instance object containing name and visitor.
 */
export function createBlockScopedFunctionsPlugin(api, options = {}) {
  const plugin = blockScopedFunctionsPlugin.default || blockScopedFunctionsPlugin;
  const babelApi = api || {
    assertVersion: (range) => Boolean(range)
  };
  return plugin(babelApi, options);
}

/**
 * Validates whether an object is a block-scoped-functions plugin instance.
 * @param {object} pluginInstance - Candidate plugin instance.
 * @returns {boolean} True if the instance matches plugin shape.
 */
export function isBlockScopedFunctionsPlugin(pluginInstance) {
  if (!pluginInstance || typeof pluginInstance !== 'object') {
    return false;
  }
  if (pluginInstance.name !== 'transform-block-scoped-functions') {
    return false;
  }
  const visitor = pluginInstance.visitor;
  return Boolean(
    visitor &&
    typeof visitor.BlockStatement === 'function' &&
    typeof visitor.SwitchStatement === 'function' &&
    typeof visitor.Loop === 'function'
  );
}

/**
 * Transforms code by applying the block-scoped-functions plugin via Babel.
 * @param {string} code - JavaScript source code.
 * @param {object} [options] - Babel transform options.
 * @returns {string} Transformed code.
 */
export function transformBlockScopedFunctions(code, options = {}) {
  const plugin = blockScopedFunctionsPlugin.default || blockScopedFunctionsPlugin;
  const result = babel.transformSync(code, {
    configFile: false,
    babelrc: false,
    plugins: [plugin],
    ...options
  });
  return result ? result.code : '';
}
test/contract.mjs
import assert from 'node:assert/strict';
import * as babel from '@babel/core';
import blockScopedFunctionsPlugin from '@babel/plugin-transform-block-scoped-functions';
import {
  createBlockScopedFunctionsPlugin,
  isBlockScopedFunctionsPlugin,
  transformBlockScopedFunctions
} from '../src/index.mjs';

const plugin = blockScopedFunctionsPlugin.default || blockScopedFunctionsPlugin;

// 1. Plugin default export is a function factory asserting Babel version compatibility
{
  assert.equal(typeof plugin, 'function', 'Plugin export must be a function factory');
  let assertedVersionRange = null;
  const mockApi = {
    assertVersion(range) {
      assertedVersionRange = range;
    }
  };
  const instance = plugin(mockApi, {});
  assert.equal(assertedVersionRange, '^7.0.0-0 || ^8.0.0', 'Plugin must assert Babel version compatibility');
  assert.equal(typeof instance, 'object', 'Plugin factory must return an object');
}

// 2. Plugin factory returns an object named transform-block-scoped-functions with visitor methods for BlockStatement, SwitchStatement, and Loop
{
  const mockApi = { assertVersion: () => true };
  const instance = plugin(mockApi, {});
  assert.equal(instance.name, 'transform-block-scoped-functions', 'Plugin name must be transform-block-scoped-functions');
  assert.equal(typeof instance.visitor, 'object', 'Plugin must have a visitor object');
  assert.equal(typeof instance.visitor.BlockStatement, 'function', 'Visitor must define BlockStatement');
  assert.equal(typeof instance.visitor.SwitchStatement, 'function', 'Visitor must define SwitchStatement');
  assert.equal(typeof instance.visitor.Loop, 'function', 'Visitor must define Loop');
}

// 3. Plugin transforms block-scoped function declarations into let variable declarations in strict mode
{
  const input = '"use strict"; { function helper() { return 1; } }';
  const res = babel.transformSync(input, {
    plugins: [plugin],
    configFile: false,
    babelrc: false
  });
  assert.ok(res && res.code, 'Transform result must not be empty');
  assert.match(res.code, /let\s+helper\s*=\s*function\s*\(\)/, 'Block-scoped function in strict mode must be transformed to let assignment');
}

// 4. Plugin transforms block-scoped function declarations into var variable declarations in non-strict script mode
{
  const input = '{ function helper() { return 2; } }';
  const res = babel.transformSync(input, {
    plugins: [plugin],
    configFile: false,
    babelrc: false,
    sourceType: 'script'
  });
  assert.ok(res && res.code, 'Transform result must not be empty');
  assert.match(res.code, /var\s+helper\s*=\s*function\s*\(\)/, 'Block-scoped function in non-strict script mode must be transformed to var assignment');
}

// 5. Plugin transforms async and generator block-scoped function declarations into let variable declarations
{
  const asyncInput = '{ async function fetchFn() {} }';
  const asyncRes = babel.transformSync(asyncInput, {
    plugins: [plugin],
    configFile: false,
    babelrc: false,
    sourceType: 'script'
  });
  assert.match(asyncRes.code, /let\s+fetchFn\s*=\s*async\s+function\s*\(\)/, 'Async block function must be transformed to let declaration');

  const genInput = '{ function* genFn() {} }';
  const genRes = babel.transformSync(genInput, {
    plugins: [plugin],
    configFile: false,
    babelrc: false,
    sourceType: 'script'
  });
  assert.match(genRes.code, /let\s+genFn\s*=\s*function\*\s*\(\)/, 'Generator block function must be transformed to let declaration');
}

// 6. Plugin transforms function declarations within switch case statements into hoisted let declarations
{
  const switchInput = 'switch (mode) { case 1: function handleOne() {} break; default: break; }';
  const res = babel.transformSync(switchInput, {
    plugins: [plugin],
    configFile: false,
    babelrc: false
  });
  assert.match(res.code, /let\s+handleOne\s*=\s*function\s+handleOne\s*\(\)/, 'Switch case function must be hoisted into enclosing block as let');
  assert.match(res.code, /switch\s*\(mode\)/, 'Switch statement must be preserved within block');
}

// 7. Plugin leaves top-level and function-level declarations untransformed
{
  const topInput = 'function topLevel() { function funcLevel() {} }';
  const res = babel.transformSync(topInput, {
    plugins: [plugin],
    configFile: false,
    babelrc: false
  });
  assert.equal(
    res.code.trim(),
    'function topLevel() {\n  function funcLevel() {}\n}',
    'Top-level and function-level function declarations must remain untouched'
  );
}

// 8. Module helpers create plugin instance, validate structure, and transform code using the plugin
{
  const helperInstance = createBlockScopedFunctionsPlugin();
  assert.ok(isBlockScopedFunctionsPlugin(helperInstance), 'Helper created instance must satisfy isBlockScopedFunctionsPlugin');
  assert.equal(isBlockScopedFunctionsPlugin({}), false, 'Empty object must not satisfy isBlockScopedFunctionsPlugin');
  assert.equal(isBlockScopedFunctionsPlugin(null), false, 'Null must not satisfy isBlockScopedFunctionsPlugin');

  const transformed = transformBlockScopedFunctions('{ function testHelper() {} }', {
    sourceType: 'script'
  });
  assert.match(transformed, /var\s+testHelper\s*=\s*function\s*\(\)/, 'Helper transform must produce transformed code');
}

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

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