CodeSampleX

Beispiel

@babel/plugin-transform-duplicate-keys 7.29.7

Verifiziertes Beispiel für npm @babel/plugin-transform-duplicate-keys 7.29.7. Der Vertrag lief auf node 22 · linux alpine/x64 · docker und bestand.

sha256:74c04303144b550e67c36e463135739c62ac907244a89e29db038efa7e8d9996

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 alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-21

Fall

HOW
Ziel
verify pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7
Pakete
Erstellt
2026-08-21T06:54:50Z

Contract

  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

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 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
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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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