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Beispiel

@babel/core 7.24.7: transformAsync

Verifiziertes Beispiel für npm @babel/core 7.24.7: transformAsync. Der Vertrag lief auf node 22 · linux debian/x64 · docker und bestand.

sha256:f7acc2c4fea6c81a496dae79231ff2fd88bef331ede1c94b90332c910b01da48

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 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-05

Fall

HOW
Ziel
verify @babel/core.transformAsync in pkg:npm/%40babel/core@7.24.7
Pakete
Symbole
  • transformAsync
Umgebung
node 22.23.2
Erstellt
2026-09-05T08:07:28Z

Contract

  1. transformAsync asynchronously transforms JavaScript code and returns a promise resolving to an object with generated code string
  2. transformAsync applies custom plugin visitors to modify AST identifiers
  3. transformAsync generates source maps when sourceMaps option is enabled
  4. transformAsync returns AST node when ast option is set to true
  5. transformAsync returns null when filename matches ignore pattern
  6. transformAsync rejects with a SyntaxError with BABEL_PARSE_ERROR code when given invalid JavaScript syntax

Dateien

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

Quellartefakt herunterladen (tar.gz)

Quelltext

csx.json
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package.json
{
  "name": "sample-babel-transformasync",
  "version": "1.0.0",
  "description": "verify @babel/core.transformAsync in pkg:npm/%40babel/core@7.24.7",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "@babel/core": "7.24.7"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @babel/core.transformAsync in pkg:npm/%40babel/core@7.24.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/core@7.24.7"
  ],
  "symbols": [
    "transformAsync"
  ]
}
src/index.js
const babel = require('@babel/core');

/**
 * Transforms JavaScript code asynchronously using @babel/core.transformAsync.
 *
 * @param {string} code - The source code to transform.
 * @param {object} [options={}] - Optional Babel transform options.
 * @returns {Promise<object|null>} Promise resolving to transformation result.
 */
async function transformCodeAsync(code, options = {}) {
  const defaultOptions = {
    configFile: false,
    babelrc: false,
    ...options
  };
  return babel.transformAsync(code, defaultOptions);
}

/**
 * Transforms code asynchronously with a custom AST visitor plugin.
 *
 * @param {string} code - The source code to transform.
 * @param {object} visitor - AST visitor map.
 * @returns {Promise<object|null>} Promise resolving to transformation result.
 */
async function transformWithVisitorAsync(code, visitor) {
  const customPlugin = () => ({
    visitor
  });
  return transformCodeAsync(code, {
    plugins: [customPlugin]
  });
}

/**
 * Transforms code asynchronously and produces a source map.
 *
 * @param {string} code - The source code to transform.
 * @param {string} [filename='source.js'] - Virtual filename for source mapping.
 * @returns {Promise<object|null>} Promise resolving to transformation result with source map.
 */
async function transformWithSourceMapAsync(code, filename = 'source.js') {
  return transformCodeAsync(code, {
    filename,
    sourceMaps: true
  });
}

module.exports = {
  transformCodeAsync,
  transformWithVisitorAsync,
  transformWithSourceMapAsync
};
test/contract.js
const assert = require('assert');
const babel = require('@babel/core');
const {
  transformCodeAsync,
  transformWithVisitorAsync,
  transformWithSourceMapAsync
} = require('../src/index');

async function runContractTests() {
  // 1. transformAsync asynchronously transforms JavaScript code and returns a promise resolving to an object with generated code string
  {
    const input = 'const x = 1 + 2;';
    const result = await transformCodeAsync(input);
    assert(result !== null, 'Result should not be null');
    assert.strictEqual(typeof result.code, 'string', 'Result must contain code string');
    assert(result.code.includes('const x = 1 + 2;'), 'Transformed code should contain statement');
  }

  // 2. transformAsync applies custom plugin visitors to modify AST identifiers
  {
    const input = 'const oldName = 42;';
    const result = await transformWithVisitorAsync(input, {
      Identifier(path) {
        if (path.node.name === 'oldName') {
          path.node.name = 'newName';
        }
      }
    });
    assert(result !== null, 'Result should not be null');
    assert(result.code.includes('const newName = 42;'), 'Identifier must be renamed');
    assert(!result.code.includes('oldName'), 'Old identifier should not be present');
  }

  // 3. transformAsync generates source maps when sourceMaps option is enabled
  {
    const input = 'function add(a, b) { return a + b; }';
    const result = await transformWithSourceMapAsync(input, 'calc.js');
    assert(result !== null, 'Result should not be null');
    assert(result.map !== null && typeof result.map === 'object', 'Source map should be generated');
    assert.strictEqual(result.map.version, 3, 'Source map version should be 3');
    assert(Array.isArray(result.map.sources), 'Source map sources should be an array');
    assert(result.map.sources.includes('calc.js'), 'Sources should include calc.js');
    assert.strictEqual(typeof result.map.mappings, 'string', 'Mappings should be a string');
  }

  // 4. transformAsync returns AST node when ast option is set to true
  {
    const input = 'const value = "hello";';
    const result = await transformCodeAsync(input, { ast: true });
    assert(result !== null, 'Result should not be null');
    assert(result.ast !== null && typeof result.ast === 'object', 'AST must be returned when ast: true');
    assert.strictEqual(result.ast.type, 'File', 'AST root node must be File');
    assert.strictEqual(result.ast.program.type, 'Program', 'AST must contain Program node');
  }

  // 5. transformAsync returns null when filename matches ignore pattern
  {
    const input = 'const skipped = true;';
    const result = await transformCodeAsync(input, {
      filename: 'ignored-file.js',
      ignore: [/ignored-file/]
    });
    assert.strictEqual(result, null, 'Ignored file transformation must return null');
  }

  // 6. transformAsync rejects with a SyntaxError with BABEL_PARSE_ERROR code when given invalid JavaScript syntax
  {
    await assert.rejects(
      async () => {
        await transformCodeAsync('const broken = ;');
      },
      (err) => {
        return err instanceof SyntaxError && err.code === 'BABEL_PARSE_ERROR';
      },
      'Invalid syntax must throw SyntaxError with BABEL_PARSE_ERROR code'
    );
  }

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

runContractTests().catch((err) => {
  console.error(err);
  process.exit(1);
});

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