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@babel/plugin-transform-duplicate-keys 8.0.1

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

sha256:787c1570fc7ed0208a43db0520c6ae961e3ad2747e57ba9be5b02c893add9173

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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@1		 2026-08-20

케이스

HOW
목표
verify pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1
패키지
생성일
2026-08-20T17:46:23Z

컨트랙트

  1. assert @babel/plugin-transform-duplicate-keys exports a Babel plugin factory function
  2. assert duplicate identifier keys in object literals are transformed to computed string property keys
  3. assert duplicate string literal keys and matching identifier keys are transformed to computed keys
  4. assert duplicate numeric literal keys and matching string keys are normalized and transformed to computed keys
  5. assert getter and setter properties with duplicate keys are transformed into computed getters or properties
  6. assert multiple successive duplicate keys in object literals and nested objects are all transformed into computed keys
  7. assert non-duplicate object properties remain untransformed standard properties

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-duplicate-keys@8.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1

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:sha256:55b9088f9c7829c9fa5247b02f28c46482c35f7af67b8a9a2a60392bc22b7d7f","contract":["assert @babel/plugin-transform-duplicate-keys exports a Babel plugin factory function","assert duplicate identifier keys in object literals are transformed to computed string property keys","assert duplicate string literal keys and matching identifier keys are transformed to computed keys","assert duplicate numeric literal keys and matching string keys are normalized and transformed to computed keys","assert getter and setter properties with duplicate keys are transformed into computed getters or properties","assert multiple successive duplicate keys in object literals and nested objects are all transformed into computed keys","assert non-duplicate object properties remain untransformed standard properties"],"goal":"verify pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1"],"schemaVersion":1},"contractCommand":["node","test/contract.js"],"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-duplicate-keys@8.0.1"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-duplicate-keys",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification sample for @babel/plugin-transform-duplicate-keys",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "@babel/plugin-transform-duplicate-keys": "8.0.1"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-duplicate-keys@8.0.1"
  ]
}
src/index.js
'use strict';

const transformDuplicateKeys = require('@babel/plugin-transform-duplicate-keys');
const babel = require('@babel/core');

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

/**
 * Transforms and executes JavaScript code containing object definitions with duplicate keys.
 *
 * @param {string} sourceCode - JavaScript snippet that assigns results to variable `output`.
 * @param {object} [options] - Plugin options.
 * @returns {*} The evaluated output value.
 */
function evaluateDuplicateKeys(sourceCode, options = {}) {
  const transformed = transformDuplicateKeysCode(sourceCode, options);
  let output;
  eval(transformed);
  return output;
}

module.exports = {
  transformDuplicateKeys,
  transformDuplicateKeysCode,
  evaluateDuplicateKeys,
};
test/contract.js
'use strict';

const assert = require('node:assert/strict');
const transformDuplicateKeys = require('@babel/plugin-transform-duplicate-keys');
const {
  transformDuplicateKeysCode,
  evaluateDuplicateKeys,
} = require('../src/index.js');

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

// Contract 2: assert duplicate identifier keys in object literals are transformed to computed string property keys
{
  const code = 'output = { a: 10, a: 20 };';
  const transformed = transformDuplicateKeysCode(code);
  assert.ok(transformed.includes('["a"]'), 'Second duplicate key "a" should be transformed to computed property ["a"]');
  const result = evaluateDuplicateKeys(code);
  assert.deepStrictEqual(result, { a: 20 }, 'Evaluated object should retain the value of the overridden property');
}

// Contract 3: assert duplicate string literal keys and matching identifier keys are transformed to computed keys
{
  const code = 'output = { "key-name": "first", "key-name": "second", title: "old", "title": "new" };';
  const transformed = transformDuplicateKeysCode(code);
  assert.ok(transformed.includes('["key-name"]'), 'Duplicate string key should be transformed to computed property');
  assert.ok(transformed.includes('["title"]'), 'Duplicate identifier-string key collision should be transformed to computed property');
  const result = evaluateDuplicateKeys(code);
  assert.deepStrictEqual(result, { 'key-name': 'second', title: 'new' });
}

// Contract 4: assert duplicate numeric literal keys and matching string keys are normalized and transformed to computed keys
{
  const code = 'output = { 42: "num", "42": "str", 100: "first", 100: "second" };';
  const transformed = transformDuplicateKeysCode(code);
  assert.ok(transformed.includes('["42"]'), 'Duplicate numeric/string key should be transformed to computed property');
  assert.ok(transformed.includes('["100"]'), 'Duplicate numeric literal should be transformed to computed property');
  const result = evaluateDuplicateKeys(code);
  assert.deepStrictEqual(result, { 42: 'str', 100: 'second' });
}

// Contract 5: assert getter and setter properties with duplicate keys are transformed into computed getters or properties
{
  const getterCode = `
    output = {
      get value() { return 100; },
      value: 200
    };
  `;
  const transformedGetter = transformDuplicateKeysCode(getterCode);
  assert.ok(transformedGetter.includes('["value"]'), 'Value property after getter should be transformed to computed key');
  const resultGetter = evaluateDuplicateKeys(getterCode);
  assert.strictEqual(resultGetter.value, 200);

  const twoGettersCode = `
    output = {
      get item() { return "v1"; },
      get item() { return "v2"; }
    };
  `;
  const transformedTwoGetters = transformDuplicateKeysCode(twoGettersCode);
  assert.ok(transformedTwoGetters.includes('get ["item"]'), 'Subsequent getter should be transformed to computed getter');
  const resultTwoGetters = evaluateDuplicateKeys(twoGettersCode);
  assert.strictEqual(resultTwoGetters.item, 'v2');
}

// Contract 6: assert multiple successive duplicate keys in object literals and nested objects are all transformed into computed keys
{
  const code = `
    output = {
      val: 1,
      val: 2,
      val: 3,
      nested: {
        x: 'a',
        x: 'b'
      }
    };
  `;
  const transformed = transformDuplicateKeysCode(code);
  const occurrences = transformed.split('["val"]').length - 1;
  assert.strictEqual(occurrences, 2, 'Should transform each subsequent duplicate of val into computed properties');
  assert.ok(transformed.includes('["x"]'), 'Nested object duplicate keys should be transformed');
  const result = evaluateDuplicateKeys(code);
  assert.deepStrictEqual(result, {
    val: 3,
    nested: { x: 'b' },
  });
}

// Contract 7: assert non-duplicate object properties remain untransformed standard properties
{
  const code = 'output = { alpha: 1, beta: 2, gamma: 3 };';
  const transformed = transformDuplicateKeysCode(code);
  assert.ok(!transformed.includes('['), 'Non-duplicate properties should not have computed keys');
  const result = evaluateDuplicateKeys(code);
  assert.deepStrictEqual(result, { alpha: 1, beta: 2, gamma: 3 });
}

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

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