CodeSampleX

Exemple

@babel/plugin-transform-destructuring 8.0.1

Échantillon vérifié pour npm @babel/plugin-transform-destructuring 8.0.1. Le contrat s'est exécuté sur node 22 · linux alpine/x64 · docker et a réussi.

sha256:417d4c01f41b8415c1f8c3cd3accf2404f4f38282758833f3ebcd2be719d7fbe

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@1		 2026-08-20

Cas

HOW
Objectif
verify pkg:npm/%40babel/plugin-transform-destructuring@8.0.1
Paquets
Environnement
node 22.23.2
Créé
2026-08-20T17:43:19Z

Contrat

  1. assert @babel/plugin-transform-destructuring exports a plugin factory function and AST helper methods
  2. assert array destructuring transforms indexed assignments, default values, hole skips, and rest elements
  3. assert object destructuring transforms property extraction, identifier renaming, default values, and rest properties
  4. assert nested destructuring patterns correctly unpack combined object and array structures
  5. assert destructuring in assignment expressions transforms existing variable targets
  6. assert function parameter destructuring correctly handles default parameter objects and unpacked arguments
  7. assert destructuring transformations support iterableIsArray and objectRestNoSymbols compiler assumptions

Fichiers

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

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: verify pkg:npm/%40babel/plugin-transform-destructuring@8.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-destructuring@8.0.1
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - 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:sha256:285281ee34be392080eb9588c21ea2a09c14a1c6506945756369a902fb0e748f","constraints":{"executionContext":"node"},"contract":["assert @babel/plugin-transform-destructuring exports a plugin factory function and AST helper methods","assert array destructuring transforms indexed assignments, default values, hole skips, and rest elements","assert object destructuring transforms property extraction, identifier renaming, default values, and rest properties","assert nested destructuring patterns correctly unpack combined object and array structures","assert destructuring in assignment expressions transforms existing variable targets","assert function parameter destructuring correctly handles default parameter objects and unpacked arguments","assert destructuring transformations support iterableIsArray and objectRestNoSymbols compiler assumptions"],"goal":"verify pkg:npm/%40babel/plugin-transform-destructuring@8.0.1","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-destructuring@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-destructuring@8.0.1"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-destructuring@8.0.1","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-destructuring",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification sample for @babel/plugin-transform-destructuring",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "@babel/plugin-transform-destructuring": "8.0.1"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-destructuring@8.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-destructuring@8.0.1"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "runtime": "node@22.23.2"
  }
}
src/index.js
'use strict';

const transformDestructuring = require('@babel/plugin-transform-destructuring');
const babel = require('@babel/core');

/**
 * Transforms JavaScript code using the destructuring transform plugin.
 *
 * @param {string} sourceCode - The input JavaScript source code.
 * @param {object} [options] - Options passed to the destructuring plugin.
 * @param {object} [assumptions] - Babel compiler assumptions.
 * @returns {string} The transformed JavaScript code.
 */
function transformDestructureCode(sourceCode, options = {}, assumptions = {}) {
  const result = babel.transformSync(sourceCode, {
    plugins: [[transformDestructuring, options]],
    assumptions,
    configFile: false,
    babelrc: false,
  });
  return result ? result.code : '';
}

/**
 * Transforms and executes JavaScript code to evaluate destructuring results.
 *
 * @param {string} sourceCode - JavaScript snippet that assigns results to variable `output`.
 * @param {object} [options] - Plugin options.
 * @param {object} [assumptions] - Compiler assumptions.
 * @returns {*} The evaluated output value.
 */
function evaluateDestructured(sourceCode, options = {}, assumptions = {}) {
  const transformed = transformDestructureCode(sourceCode, options, assumptions);
  let output;
  eval(transformed);
  return output;
}

module.exports = {
  transformDestructuring,
  transformDestructureCode,
  evaluateDestructured,
};
test/contract.js
'use strict';

const assert = require('node:assert/strict');
const transformDestructuring = require('@babel/plugin-transform-destructuring');
const {
  transformDestructureCode,
  evaluateDestructured,
} = require('../src/index.js');

// Contract 1: assert @babel/plugin-transform-destructuring exports a plugin factory function and AST helper methods
{
  assert.strictEqual(typeof transformDestructuring, 'object', 'Plugin module should be an object');
  assert.strictEqual(typeof transformDestructuring.default, 'function', 'Plugin default export should be a function');
  assert.strictEqual(typeof transformDestructuring.buildObjectExcludingKeys, 'function', 'buildObjectExcludingKeys should be a function');
  assert.strictEqual(typeof transformDestructuring.unshiftForXStatementBody, 'function', 'unshiftForXStatementBody should be a function');
}

// Contract 2: assert array destructuring transforms indexed assignments, default values, hole skips, and rest elements
{
  const code = `
    const [first, , third = 30, ...tail] = [10, 20, undefined, 40, 50];
    output = { first, third, tail };
  `;
  const result = evaluateDestructured(code);
  assert.deepStrictEqual(result, {
    first: 10,
    third: 30,
    tail: [40, 50],
  }, 'Array destructuring with defaults, holes, and rest elements should evaluate correctly');
}

// Contract 3: assert object destructuring transforms property extraction, identifier renaming, default values, and rest properties
{
  const code = `
    const { name: userName, role = "guest", ...metadata } = { name: "Alice", active: true, level: 5 };
    output = { userName, role, metadata };
  `;
  const result = evaluateDestructured(code);
  assert.deepStrictEqual(result, {
    userName: 'Alice',
    role: 'guest',
    metadata: { active: true, level: 5 },
  }, 'Object destructuring with rename, default, and rest should evaluate correctly');
}

// Contract 4: assert nested destructuring patterns correctly unpack combined object and array structures
{
  const code = `
    const { point: [x, y = 0], meta: { id, tag = "default-tag" } } = {
      point: [100],
      meta: { id: "item-1" }
    };
    output = { x, y, id, tag };
  `;
  const result = evaluateDestructured(code);
  assert.deepStrictEqual(result, {
    x: 100,
    y: 0,
    id: 'item-1',
    tag: 'default-tag',
  }, 'Nested object and array destructuring should evaluate correctly');
}

// Contract 5: assert destructuring in assignment expressions transforms existing variable targets
{
  const code = `
    let a, b, c;
    [a, b, c = 3] = [1, 2];
    let x, y;
    ({ x, y = 20 } = { x: 10 });
    output = { a, b, c, x, y };
  `;
  const result = evaluateDestructured(code);
  assert.deepStrictEqual(result, {
    a: 1,
    b: 2,
    c: 3,
    x: 10,
    y: 20,
  }, 'Assignment expression destructuring should update existing variables');
}

// Contract 6: assert function parameter destructuring correctly handles default parameter objects and unpacked arguments
{
  const code = `
    function describeHost({ host = "127.0.0.1", port = 8080 } = {}) {
      return host + ":" + port;
    }
    output = {
      defaultCall: describeHost(),
      customCall: describeHost({ host: "example.com", port: 443 })
    };
  `;
  const result = evaluateDestructured(code);
  assert.deepStrictEqual(result, {
    defaultCall: '127.0.0.1:8080',
    customCall: 'example.com:443',
  }, 'Function parameter destructuring should support default objects and custom inputs');
}

// Contract 7: assert destructuring transformations support iterableIsArray and objectRestNoSymbols compiler assumptions
{
  const code = `
    const [h, ...t] = [1, 2, 3];
    const { k, ...rest } = { k: "val", extra: 99 };
    output = { h, t, k, rest };
  `;
  const transformed = transformDestructureCode(code, {}, {
    iterableIsArray: true,
    objectRestNoSymbols: true,
  });
  assert.ok(transformed.includes('_objectWithoutPropertiesLoose'), 'Should use loose helper under objectRestNoSymbols assumption');
  const result = evaluateDestructured(code, {}, {
    iterableIsArray: true,
    objectRestNoSymbols: true,
  });
  assert.deepStrictEqual(result, {
    h: 1,
    t: [2, 3],
    k: 'val',
    rest: { extra: 99 },
  }, 'Destructuring under assumptions should evaluate correctly');
}

console.log('All @babel/plugin-transform-destructuring contract assertions passed.');

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