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샘플

@babel/plugin-transform-duplicate-keys 7.29.7

검증된 샘플 — npm @babel/plugin-transform-duplicate-keys 7.29.7. node 22 · linux alpine/x64 · docker에서 contract를 실행해 통과했습니다: Plugin default export is a function…

sha256:74c04303144b550e67c36e463135739c62ac907244a89e29db038efa7e8d9996

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		 2026-08-21

케이스

HOW
목표
verify pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7
패키지
생성일
2026-08-21T06:54:50Z

컨트랙트

  1. Plugin default export is a function factory asserting Babel 7 compatibility
  2. Plugin factory returns an object named transform-duplicate-keys with ObjectExpression visitor method
  3. ObjectExpression visitor marks duplicate data properties as computed string literals
  4. ObjectExpression visitor detects duplicates across getters, setters, and data properties
  5. ObjectExpression visitor ignores spread elements and already computed properties
  6. Module helpers instantiate plugin and transform duplicate keys in AST object expressions

파일

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

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@7.29.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-duplicate-keys@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:fa6b898b968dd3915d9d369ba6d91e82193f53613fb2d68384fd540f93a7194a","contract":["Plugin default export is a function factory asserting Babel 7 compatibility","Plugin factory returns an object named transform-duplicate-keys with ObjectExpression visitor method","ObjectExpression visitor marks duplicate data properties as computed string literals","ObjectExpression visitor detects duplicates across getters, setters, and data properties","ObjectExpression visitor ignores spread elements and already computed properties","Module helpers instantiate plugin and transform duplicate keys in AST object expressions"],"goal":"verify pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-duplicate-keys@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-duplicate-keys@7.29.7"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "verify-babel-plugin-transform-duplicate-keys",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@babel/plugin-transform-duplicate-keys": "7.29.7"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7"
  ]
}
src/index.mjs
import duplicateKeysPlugin from '@babel/plugin-transform-duplicate-keys';

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

/**
 * Transforms an ObjectExpression AST path using the duplicate-keys visitor.
 * @param {object} pluginInstance - Plugin instance returned by createDuplicateKeysPlugin.
 * @param {object} path - Mock or real Babel AST path for ObjectExpression.
 */
export function applyDuplicateKeysTransform(pluginInstance, path) {
  if (pluginInstance.visitor && typeof pluginInstance.visitor.ObjectExpression === 'function') {
    pluginInstance.visitor.ObjectExpression(path);
  }
}
test/contract.mjs
import assert from 'node:assert/strict';
import duplicateKeysPlugin from '@babel/plugin-transform-duplicate-keys';
import { createDuplicateKeysPlugin, applyDuplicateKeysTransform } from '../src/index.mjs';

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

// 2. Verify assertVersion check and plugin structure
let assertedVersion = null;
const mockApi = {
  assertVersion(version) {
    assertedVersion = version;
  }
};
const instance = plugin(mockApi, {});
assert.equal(assertedVersion, 7, 'Plugin must assert Babel version 7 compatibility');
assert.equal(typeof instance, 'object', 'Plugin factory must return an object');
assert.equal(instance.name, 'transform-duplicate-keys', 'Plugin name must be transform-duplicate-keys');
assert.equal(typeof instance.visitor, 'object', 'Plugin must provide a visitor object');
assert.equal(typeof instance.visitor.ObjectExpression, 'function', 'Visitor must provide ObjectExpression method');

// Helper to construct a mock ObjectProperty
function createMockProperty(nameOrValue, isIdentifier = true, kind = 'init', computed = false) {
  return {
    type: 'ObjectProperty',
    key: isIdentifier
      ? { type: 'Identifier', name: nameOrValue }
      : { type: 'StringLiteral', value: String(nameOrValue) },
    value: { type: 'NumericLiteral', value: 1 },
    computed,
    kind
  };
}

// 3. Verify ObjectExpression visitor marks duplicate data properties as computed string literals
{
  const prop1 = createMockProperty('a', true, 'init');
  const prop2 = createMockProperty('a', true, 'init');
  const prop3 = createMockProperty('b', true, 'init');

  const path = {
    node: {
      type: 'ObjectExpression',
      properties: [prop1, prop2, prop3]
    }
  };

  instance.visitor.ObjectExpression(path);

  assert.equal(prop1.computed, false, 'First property must not be marked computed');
  assert.equal(prop2.computed, true, 'Duplicate property must be marked computed');
  assert.equal(prop2.key.type, 'StringLiteral', 'Duplicate property key must be transformed to StringLiteral');
  assert.equal(prop2.key.value, 'a', 'Duplicate property key value must match original name');
  assert.equal(prop3.computed, false, 'Unique property must not be marked computed');
}

// 4. Verify string literal duplicate keys
{
  const prop1 = createMockProperty('foo', false, 'init');
  const prop2 = createMockProperty('foo', false, 'init');

  const path = {
    node: {
      type: 'ObjectExpression',
      properties: [prop1, prop2]
    }
  };

  instance.visitor.ObjectExpression(path);

  assert.equal(prop1.computed, false, 'First string literal property must remain uncomputed');
  assert.equal(prop2.computed, true, 'Second string literal property must be marked computed');
  assert.equal(prop2.key.type, 'StringLiteral');
  assert.equal(prop2.key.value, 'foo');
}

// 5. Verify ObjectExpression visitor detects duplicates across getters, setters, and data properties
{
  // Test duplicate getters
  const get1 = createMockProperty('size', true, 'get');
  const get2 = createMockProperty('size', true, 'get');
  const getPath = {
    node: {
      type: 'ObjectExpression',
      properties: [get1, get2]
    }
  };
  instance.visitor.ObjectExpression(getPath);
  assert.equal(get1.computed, false);
  assert.equal(get2.computed, true);
  assert.equal(get2.key.type, 'StringLiteral');
  assert.equal(get2.key.value, 'size');

  // Test getter + setter (valid pair, not duplicate)
  const getProp = createMockProperty('count', true, 'get');
  const setProp = createMockProperty('count', true, 'set');
  const getterSetterPath = {
    node: {
      type: 'ObjectExpression',
      properties: [getProp, setProp]
    }
  };
  instance.visitor.ObjectExpression(getterSetterPath);
  assert.equal(getProp.computed, false, 'Getter in get/set pair must not be duplicate');
  assert.equal(setProp.computed, false, 'Setter in get/set pair must not be duplicate');

  // Test getter followed by data property (conflict -> duplicate)
  const getProp2 = createMockProperty('total', true, 'get');
  const dataProp2 = createMockProperty('total', true, 'init');
  const conflictPath = {
    node: {
      type: 'ObjectExpression',
      properties: [getProp2, dataProp2]
    }
  };
  instance.visitor.ObjectExpression(conflictPath);
  assert.equal(getProp2.computed, false);
  assert.equal(dataProp2.computed, true);
  assert.equal(dataProp2.key.value, 'total');
}

// 6. Verify ObjectExpression visitor ignores spread elements and already computed properties
{
  const spreadNode = {
    type: 'SpreadElement',
    argument: { type: 'Identifier', name: 'rest' }
  };
  const computedProp = {
    type: 'ObjectProperty',
    key: { type: 'Identifier', name: 'dynamicKey' },
    value: { type: 'NumericLiteral', value: 42 },
    computed: true,
    kind: 'init'
  };
  const normalProp = createMockProperty('staticKey', true, 'init');

  const path = {
    node: {
      type: 'ObjectExpression',
      properties: [spreadNode, computedProp, normalProp]
    }
  };

  instance.visitor.ObjectExpression(path);
  assert.equal(normalProp.computed, false, 'Static property must remain unchanged');
  assert.equal(computedProp.computed, true, 'Computed property must remain unchanged');
}

// 7. Verify helper functions from src/index.mjs
{
  const helperInstance = createDuplicateKeysPlugin();
  assert.equal(helperInstance.name, 'transform-duplicate-keys');

  const propA1 = createMockProperty('x', true, 'init');
  const propA2 = createMockProperty('x', true, 'init');
  const helperPath = {
    node: {
      type: 'ObjectExpression',
      properties: [propA1, propA2]
    }
  };

  applyDuplicateKeysTransform(helperInstance, helperPath);
  assert.equal(propA1.computed, false);
  assert.equal(propA2.computed, true);
  assert.equal(propA2.key.value, 'x');
}

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

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