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@babel/core 7.29.6: transformSync

검증된 샘플 — npm @babel/core 7.29.6: transformSync. node 22 · linux debian/x64 · docker에서 contract를 실행해 통과했습니다: babel.transformSync is exported as a function by…

sha256:600b2ed5c17b30fc1241e8fcaf794bb0e586953e9ee6fdb1b208891c1fc59a2d

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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
  • transformSync
생성일
2026-09-03T10:03:38Z

컨트랙트

  1. babel.transformSync is exported as a function by @babel/core and transforms JavaScript source code into generated code string
  2. transformSync returns null for result.ast by default when options.ast is omitted or false
  3. transformSync returns the transformed File AST node on result.ast when options.ast is set to true
  4. transformSync applies custom plugin visitors synchronously to modify AST nodes and generates modified output code
  5. transformSync produces source map mappings when options.sourceMaps is enabled
  6. transformSync returns minified output code without comments when minified option is true
  7. transformSync returns null when filename matches configured ignore pattern
  8. 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.mjs
  • 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
Demonstrate these symbols/APIs:
  - transformSync

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:sha256:667c50c563df1dbd8a76693eeff67f0bbdc376320fab6c9cd4876349491556cb","contract":["babel.transformSync is exported as a function by @babel/core and transforms JavaScript source code into generated code string","transformSync returns null for result.ast by default when options.ast is omitted or false","transformSync returns the transformed File AST node on result.ast when options.ast is set to true","transformSync applies custom plugin visitors synchronously to modify AST nodes and generates modified output code","transformSync produces source map mappings when options.sourceMaps is enabled","transformSync returns minified output code without comments when minified option is true","transformSync returns null when filename matches configured 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":["transformSync"]},"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/core@7.29.6"],"schemaVersion":1,"subject":"pkg:npm/%40babel/core@7.29.6","symbols":["transformSync"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-core-transformsync",
  "version": "1.0.0",
  "description": "verify @babel/core.transformSync in pkg:npm/%40babel/core@7.29.6",
  "type": "module",
  "main": "src/index.mjs",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@babel/core": "7.29.6"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/core@7.29.6",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/core@7.29.6"
  ],
  "symbols": [
    "transformSync"
  ]
}
src/index.mjs
import * as babel from "@babel/core";

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

/**
 * Transforms code synchronously applying a custom visitor plugin.
 *
 * @param {string} code - The source code to transform.
 * @param {object|Function} plugin - Babel plugin function or object.
 * @param {object} [options={}] - Additional options.
 * @returns {string} The transformed code string.
 */
export function transformWithPlugin(code, plugin, options = {}) {
  const result = transformCode(code, {
    plugins: [plugin],
    ...options,
  });
  return result ? result.code : "";
}

/**
 * Transforms code and requests the AST in the result.
 *
 * @param {string} code - The source code to transform.
 * @param {object} [options={}] - Additional options.
 * @returns {object|null} The transformed AST node from result.ast.
 */
export function transformToAst(code, options = {}) {
  const result = transformCode(code, {
    ast: true,
    code: false,
    ...options,
  });
  return result ? result.ast : null;
}

/**
 * Transforms code and generates a v3 source map.
 *
 * @param {string} code - The source code to transform.
 * @param {string} [filename="source.js"] - Virtual filename for source mapping.
 * @param {object} [options={}] - Additional options.
 * @returns {{code: string, map: object|null}} Generated code and source map object.
 */
export function transformWithSourceMap(code, filename = "source.js", options = {}) {
  const result = transformCode(code, {
    filename,
    sourceMaps: true,
    ...options,
  });
  return {
    code: result ? result.code : "",
    map: result ? result.map : null,
  };
}

/**
 * Transforms code with minified output.
 *
 * @param {string} code - The source code to transform.
 * @param {object} [options={}] - Additional options.
 * @returns {string} The minified code string.
 */
export function transformMinified(code, options = {}) {
  const result = transformCode(code, {
    minified: true,
    comments: false,
    ...options,
  });
  return result ? result.code : "";
}

export { babel };
test/contract.mjs
import assert from "node:assert/strict";
import * as babel from "@babel/core";
import {
  transformCode,
  transformWithPlugin,
  transformToAst,
  transformWithSourceMap,
  transformMinified,
} from "../src/index.mjs";

function runContracts() {
  // Contract 1: babel.transformSync is exported as a function by @babel/core and transforms JavaScript source code into generated code string
  {
    assert.strictEqual(
      typeof babel.transformSync,
      "function",
      "babel.transformSync must be a function"
    );

    const input = 'const x = 1 + 2;';
    const result = transformCode(input);
    assert.ok(result !== null, "transformSync must return a result object");
    assert.strictEqual(typeof result.code, "string", "result.code must be a string");
    assert.ok(result.code.includes("const x = 1 + 2;"), "result.code must contain code");
  }

  // Contract 2: transformSync returns null for result.ast by default when options.ast is omitted or false
  {
    const input = 'const value = 42;';
    const result = transformCode(input);
    assert.ok(result !== null, "result must not be null");
    assert.strictEqual(result.ast, null, "result.ast must be strictly null by default");
    assert.strictEqual(typeof result.code, "string", "result.code must be present");
  }

  // Contract 3: transformSync returns the transformed File AST node on result.ast when options.ast is set to true
  {
    const input = 'const greeting = "hello";';
    const ast = transformToAst(input);
    assert.ok(ast !== null, "ast must not be null");
    assert.strictEqual(ast.type, "File", "returned AST must have type 'File'");
    assert.ok(ast.program, "returned AST must have a program node");
    assert.strictEqual(ast.program.type, "Program");
    assert.strictEqual(ast.program.body[0].type, "VariableDeclaration");
  }

  // Contract 4: transformSync applies custom plugin visitors synchronously to modify AST nodes and generates modified output code
  {
    const input = 'const oldName = 100;';
    const renamePlugin = () => ({
      visitor: {
        Identifier(path) {
          if (path.node.name === "oldName") {
            path.node.name = "newName";
          }
        },
      },
    });

    const output = transformWithPlugin(input, renamePlugin);
    assert.ok(output.includes("const newName = 100;"), "output must reflect plugin transformation");
    assert.ok(!output.includes("oldName"), "original identifier must not be present");
  }

  // Contract 5: transformSync produces source map mappings when options.sourceMaps is enabled
  {
    const input = 'function multiply(a, b) { return a * b; }';
    const { code, map } = transformWithSourceMap(input, "calc.js");
    assert.ok(typeof code === "string" && code.length > 0, "code must be generated");
    assert.ok(map !== null && typeof map === "object", "map must be generated");
    assert.strictEqual(map.version, 3, "source map version must be 3");
    assert.ok(Array.isArray(map.sources), "map sources must be an array");
    assert.ok(map.sources.includes("calc.js"), "sources must include calc.js");
    assert.strictEqual(typeof map.mappings, "string", "mappings must be a string");
  }

  // Contract 6: transformSync returns minified output code without comments when minified option is true
  {
    const input = '// this is a comment\nfunction test(x) {\n  return x * 2;\n}';
    const output = transformMinified(input);
    assert.ok(typeof output === "string", "minified output must be string");
    assert.ok(!output.includes("// this is a comment"), "comments must be removed");
    assert.ok(!output.includes("\n"), "output must not contain newlines");
    assert.ok(output.includes("function test(x){return x*2}"), "code must be minified");
  }

  // Contract 7: transformSync returns null when filename matches configured ignore pattern
  {
    const result = transformCode("const ignored = true;", {
      filename: "ignored.js",
      ignore: ["ignored.js"],
    });
    assert.strictEqual(result, null, "transformSync must return null for ignored files");
  }

  // Contract 8: transformSync throws a SyntaxError with BABEL_PARSE_ERROR code when given invalid JavaScript syntax
  {
    assert.throws(
      () => {
        transformCode("const = 123;");
      },
      (err) => {
        return err.name === "SyntaxError" && err.code === "BABEL_PARSE_ERROR";
      },
      "transformSync must throw a SyntaxError with code BABEL_PARSE_ERROR on parse error"
    );
  }

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

runContracts();

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