CodeSampleX

Beispiel

@babel/core 7.29.6: transformSync

Verifiziertes Beispiel für npm @babel/core 7.29.6: transformSync. Der Vertrag lief auf node 22 · linux debian/x64 · docker und bestand.

sha256:e5ec981873981d71e40aee1064260e998e875cad5d6cccdec2c090924c12dbe3

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…		 2026-09-03

Fall

HOW
Ziel
verify pkg:npm/%40babel/core@7.29.6
Pakete
Symbole
  • @babel/core.transformSync
Umgebung
node 22.23.2
Erstellt
2026-09-03T09:47:32Z

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 minifies generated code when minified option is set to true
  6. transformSync returns null when filename matches ignore pattern
  7. transformSync throws a SyntaxError with BABEL_PARSE_ERROR code when given invalid JavaScript syntax

Dateien

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • 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/core@7.29.6
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/core@7.29.6

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:sha256:34e289d860ee4510158644ebbdd9bf508b4689ced4a9699b6fe9c1f5b1daa0dd","contract":["transformSync synchronously transforms JavaScript code and returns an object with generated code string","transformSync applies custom plugin visitors synchronously to modify AST identifiers","transformSync generates source maps when sourceMaps option is enabled","transformSync returns AST node when ast option is set to true","transformSync minifies generated code when minified option is set to true","transformSync returns null when filename matches ignore pattern","transformSync throws a SyntaxError with BABEL_PARSE_ERROR code when given invalid JavaScript syntax"],"goal":"verify pkg:npm/%40babel/core@7.29.6","kind":"HOW","packages":["pkg:npm/%40babel/core@7.29.6"],"schemaVersion":1,"symbols":["@babel/core.transformSync"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"esm","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40babel/core@7.29.6"],"schemaVersion":1,"subject":"pkg:npm/%40babel/core@7.29.6","symbols":["@babel/core.transformSync"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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}
package.json
{
  "name": "sample-babel-core",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "@babel/core": "7.29.6"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/core@7.29.6",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/core@7.29.6"
  ]
}
src/index.js
import babel from '@babel/core';

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

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

/**
 * Transforms code with source maps enabled.
 *
 * @param {string} code - Source code string to transform.
 * @param {string} [filename='source.js'] - Virtual source filename.
 * @returns {object|null} Transformation result object with source map.
 */
export function transformWithSourceMap(code, filename = 'source.js') {
  return transformCode(code, {
    filename,
    sourceMaps: true
  });
}

/**
 * Transforms code with minification enabled.
 *
 * @param {string} code - Source code string to transform.
 * @returns {object|null} Transformation result object with minified code.
 */
export function transformMinified(code) {
  return transformCode(code, {
    minified: true,
    comments: false
  });
}
test/contract.mjs
import assert from 'node:assert/strict';
import {
  transformCode,
  transformWithVisitor,
  transformWithSourceMap,
  transformMinified
} from '../src/index.js';

// 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.ok(result !== null, 'Result should not be null');
  assert.strictEqual(typeof result.code, 'string', 'Result must contain code string');
  assert.ok(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.ok(result !== null, 'Result should not be null');
  assert.ok(result.code.includes('const newName = 42;'), 'Identifier must be renamed');
  assert.ok(!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.ok(result !== null, 'Result should not be null');
  assert.ok(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.ok(Array.isArray(result.map.sources), 'Source map sources should be an array');
  assert.ok(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.ok(result !== null, 'Result should not be null');
  assert.ok(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 minifies generated code when minified option is set to true
{
  const input = 'function multiply(x, y) {\n  const res = x * y;\n  return res;\n}';
  const result = transformMinified(input);
  assert.ok(result !== null, 'Result should not be null');
  assert.strictEqual(typeof result.code, 'string', 'Result must contain code string');
  assert.ok(!result.code.includes('\n'), 'Minified output should not contain newlines');
  assert.ok(result.code.includes('function multiply(x,y){const res=x*y;return res}'), 'Code should be minified');
}

// 6. transformSync returns null when filename matches ignore pattern
{
  const result = transformCode('const secret = true;', {
    filename: 'ignored-file.js',
    ignore: ['ignored-file.js']
  });
  assert.strictEqual(result, null, 'Ignored file transformation must return null');
}

// 7. 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('Contract test passed successfully: all 7 assertions passed.');

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