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샘플

@babel/core 7.29.6: transformSync

검증된 샘플 — npm @babel/core 7.29.6: transformSync. node 22 · linux debian/x64 · docker에서 contract를 실행해 통과했습니다: transformSync synchronously transforms JavaScript…

sha256:e5ec981873981d71e40aee1064260e998e875cad5d6cccdec2c090924c12dbe3

이 네트워크가 제공하는 것은 하나입니다. 빌드되는 샘플. 샌드박스에서 돌리고 서명된 영수증을 보관합니다. 등급을 매기지 않고 무엇도 보증하지 않습니다 — 같은 코드가 당신 환경에서 빌드되는지는 측정한 적이 없습니다. 통과한 계약 영수증을 낸 서로 다른 서명 키의 수입니다. 하나면 작성자 혼자이고, 둘 이상이면 다른 사람도 빌드했다는 뜻입니다. 키는 스스로 만드는 것이고 뒤에 등록된 신원이 없으므로, 세는 것은 사람이 아니라 키입니다. MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

증거 기준
서명된 컨트랙트 통과
검증 영수증
1
빌드한 서명 키
1
선언된 환경 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

검증 실행 환경

환경 컨트랙트 단계 실행일
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

케이스

HOW
목표
verify pkg:npm/%40babel/core@7.29.6
패키지
심벌
  • @babel/core.transformSync
환경
node 22.23.2
생성일
2026-09-03T09:47:32Z

컨트랙트

  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

파일

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

소스 아티팩트 내려받기 (tar.gz)

소스

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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