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@babel/plugin-syntax-private-property-in-object 7.14.5: verify private property in object syntax parsing with @babel/plugin-syntax-private-property-in-object

Échantillon vérifié pour npm @babel/plugin-syntax-private-property-in-object 7.14.5: verify private property in object syntax parsing with…

sha256:c2661ac573b5d480c11050c79e9ddf968cabbb964df72f113fef15721cb64cc4

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Cas

HOW
Objectif
verify private property in object syntax parsing with @babel/plugin-syntax-private-property-in-object
Paquets
Symboles
  • default
Créé
2026-08-27T21:23:17Z

Contrat

  1. configures Babel parser options to enable the privateIn syntax plugin for parsing #field in object expressions
  2. parses private property in expressions within instance methods, static methods, and constructor bodies
  3. generates valid AST with BinaryExpression containing PrivateName on the left and target identifier on the right
  4. supports private in check within complex expressions such as conditional ternaries and logical operators

Fichiers

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

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 private property in object syntax parsing with @babel/plugin-syntax-private-property-in-object
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-syntax-private-property-in-object@7.14.5
Demonstrate these symbols/APIs:
  - 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:sha256:3526e932bc826685050e19f0f16a32cba1238b52dba54162c9a47a8133284e4d","contract":["configures Babel parser options to enable the privateIn syntax plugin for parsing #field in object expressions","parses private property in expressions within instance methods, static methods, and constructor bodies","generates valid AST with BinaryExpression containing PrivateName on the left and target identifier on the right","supports private in check within complex expressions such as conditional ternaries and logical operators"],"goal":"verify private property in object syntax parsing with @babel/plugin-syntax-private-property-in-object","kind":"HOW","packages":["pkg:npm/%40babel/plugin-syntax-private-property-in-object@7.14.5"],"schemaVersion":1,"symbols":["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-syntax-private-property-in-object@7.14.5"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-syntax-private-property-in-object@7.14.5","symbols":["default"],"verifierAdapter":"node-typescript@1"}
index.mjs
import * as babel from '@babel/core';
import syntaxPluginImport from '@babel/plugin-syntax-private-property-in-object';

export const syntaxPrivatePropertyInObjectPlugin =
  typeof syntaxPluginImport === 'function'
    ? syntaxPluginImport
    : syntaxPluginImport?.default || syntaxPluginImport;

/**
 * Parses and transforms source code using @babel/plugin-syntax-private-property-in-object.
 *
 * @param {string} sourceCode - The JavaScript source code containing private property `in` syntax.
 * @param {object} [options] - Optional Babel transform configuration options.
 * @returns {{ code: string, ast: object }} The transformed code and parsed AST.
 */
export function parsePrivatePropertyInObject(sourceCode, options = {}) {
  const result = babel.transformSync(sourceCode, {
    configFile: false,
    babelrc: false,
    ast: true,
    plugins: [
      syntaxPrivatePropertyInObjectPlugin,
      ...(options.plugins || [])
    ],
    ...options
  });

  return {
    code: result?.code ?? '',
    ast: result?.ast ?? null
  };
}

/**
 * Inspects parsed AST to find all private `in` expressions (#field in object).
 *
 * @param {object} ast - The Babel AST.
 * @returns {Array<{ field: string, target: string }>} Array of privateIn occurrences found in AST.
 */
export function extractPrivateInExpressions(ast) {
  const matches = [];
  babel.traverse(ast, {
    BinaryExpression(path) {
      if (path.node.operator === 'in' && path.node.left.type === 'PrivateName') {
        matches.push({
          field: path.node.left.id.name,
          target: path.node.right.type === 'Identifier' ? path.node.right.name : path.node.right.type
        });
      }
    }
  });
  return matches;
}
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package.json
{
  "name": "sample-babel-plugin-syntax-private-property-in-object",
  "version": "1.0.0",
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/core": "7.29.7",
    "@babel/plugin-syntax-private-property-in-object": "7.14.5"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify private property in object syntax parsing with @babel/plugin-syntax-private-property-in-object",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-syntax-private-property-in-object@7.14.5"
  ],
  "symbols": [
    "default"
  ]
}
test/contract.mjs
import assert from 'node:assert';
import { parsePrivatePropertyInObject, extractPrivateInExpressions, syntaxPrivatePropertyInObjectPlugin } from '../index.mjs';

console.log('Running contract tests for @babel/plugin-syntax-private-property-in-object...');

// Assertion 1: Plugin manipulates parser options to enable privateIn
{
  const parserOpts = { plugins: [] };
  const pluginInstance = syntaxPrivatePropertyInObjectPlugin({ assertVersion: () => true });
  pluginInstance.manipulateOptions({}, parserOpts);
  assert.ok(
    parserOpts.plugins.includes('privateIn'),
    'Plugin must configure parserOpts to include privateIn'
  );
  console.log('✔ Assertion 1 passed: Parser options configured with privateIn');
}

// Assertion 2: Parses private property in expressions within instance and static methods
{
  const inputCode = `
    class Validator {
      #token = 'secret';
      static #registered = true;

      hasToken(obj) {
        return #token in obj;
      }

      static isRegistered(obj) {
        return #registered in obj;
      }
    }
  `;

  const { code, ast } = parsePrivatePropertyInObject(inputCode);
  assert.ok(code.includes('#token in obj'), 'Output code should contain #token in obj');
  assert.ok(code.includes('#registered in obj'), 'Output code should contain #registered in obj');
  assert.ok(ast, 'AST must be generated');

  const expressions = extractPrivateInExpressions(ast);
  assert.strictEqual(expressions.length, 2, 'Should find 2 private in expressions');
  assert.deepStrictEqual(expressions, [
    { field: 'token', target: 'obj' },
    { field: 'registered', target: 'obj' }
  ]);
  console.log('✔ Assertion 2 passed: Instance and static method private in parsing');
}

// Assertion 3: Generates valid BinaryExpression AST with PrivateName
{
  const inputCode = `
    class Cache {
      #entry;
      constructor(source) {
        if (#entry in source) {
          this.cached = true;
        }
      }
    }
  `;

  const { ast } = parsePrivatePropertyInObject(inputCode);
  const expressions = extractPrivateInExpressions(ast);
  assert.strictEqual(expressions.length, 1);
  assert.strictEqual(expressions[0].field, 'entry');
  assert.strictEqual(expressions[0].target, 'source');
  console.log('✔ Assertion 3 passed: Valid BinaryExpression AST with PrivateName in constructor');
}

// Assertion 4: Complex expressions (logical and ternary)
{
  const inputCode = `
    class MultiCheck {
      #a;
      #b;
      verify(target) {
        const result = (#a in target && !(#b in target)) ? "valid" : "invalid";
        return result;
      }
    }
  `;

  const { ast } = parsePrivatePropertyInObject(inputCode);
  const expressions = extractPrivateInExpressions(ast);
  assert.strictEqual(expressions.length, 2);
  assert.strictEqual(expressions[0].field, 'a');
  assert.strictEqual(expressions[1].field, 'b');
  console.log('✔ Assertion 4 passed: Complex expressions with logical operators and ternaries');
}

console.log('All contract assertions passed successfully.');

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