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Beispiel

@babel/core 7.24.7: transformSync

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

sha256:bbbe1bc0a2d44cd0940b4de378e1089503b7643e10fd93680e87adebd6fe4148

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.transformSync in pkg:npm/%40babel/core@7.24.7
Pakete
Symbole
  • @babel/core.transformSync
Umgebung
node 22.23.2
Erstellt
2026-09-05T07:45:50Z

Contract

  1. transformSync synchronously transforms JavaScript code and returns an object with generated code string
  2. transformSync applies custom plugin visitors synchronously to modify AST identifiers
  3. transformSync generates source maps when sourceMaps option is enabled
  4. transformSync returns AST node when ast option is set to true
  5. transformSync returns null when filename matches ignore pattern
  6. transformSync throws 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-lock.json
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package.json
{
  "name": "sample-babel-transformsync",
  "version": "1.0.0",
  "description": "verify @babel/core.transformSync 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.transformSync in pkg:npm/%40babel/core@7.24.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/core@7.24.7"
  ],
  "symbols": [
    "@babel/core.transformSync"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
src/index.js
const babel = require('@babel/core');

/**
 * Transforms JavaScript code synchronously using @babel/core.transformSync.
 *
 * @param {string} code - The source code to transform.
 * @param {object} [options={}] - Optional Babel transform options.
 * @returns {object|null} The transformation result with code, map, and ast.
 */
function transformCode(code, options = {}) {
  const defaultOptions = {
    configFile: false,
    babelrc: false,
    ...options
  };
  return babel.transformSync(code, defaultOptions);
}

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

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

module.exports = {
  transformCode,
  transformWithVisitor,
  transformWithSourceMap
};
test/contract.js
const assert = require('assert');
const babel = require('@babel/core');
const { transformCode, transformWithVisitor, transformWithSourceMap } = require('../src/index');

// 1. transformSync synchronously transforms JavaScript code and returns an object with generated code string
{
  const input = 'const x = 1 + 2;';
  const result = transformCode(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. transformSync applies custom plugin visitors synchronously to modify AST identifiers
{
  const input = 'const oldName = 42;';
  const result = transformWithVisitor(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. transformSync generates source maps when sourceMaps option is enabled
{
  const input = 'function add(a, b) { return a + b; }';
  const result = transformWithSourceMap(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. transformSync returns AST node when ast option is set to true
{
  const input = 'const value = "hello";';
  const result = transformCode(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. transformSync returns null when filename matches ignore pattern
{
  const input = 'const skipped = true;';
  const result = transformCode(input, {
    filename: 'ignored-file.js',
    ignore: [/ignored-file/]
  });
  assert.strictEqual(result, null, 'Ignored file transformation must return null');
}

// 6. transformSync throws a SyntaxError with BABEL_PARSE_ERROR code when given invalid JavaScript syntax
{
  assert.throws(
    () => {
      transformCode('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.');

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