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@babel/core 7.29.6: buildExternalHelpers

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

sha256:375672659ed8567ff7a1ce254f0bf35538a0c94a7a1f5c56d28313d61be443e9

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

컨트랙트

  1. babel.buildExternalHelpers is exported as a function by @babel/core and returns a string of helper definitions
  2. buildExternalHelpers defaults to global outputType wrapping helpers in an IIFE assigning to global.babelHelpers
  3. buildExternalHelpers produces UMD formatted wrapper when outputType is set to umd
  4. buildExternalHelpers produces standalone var declarations when outputType is set to var
  5. buildExternalHelpers restricts generated code to specified helpers when whitelist array is provided
  6. buildExternalHelpers outputs only the container wrapper without helper implementations when whitelist is empty array
  7. buildExternalHelpers throws an Error with Unsupported output type message when given an invalid outputType
  8. buildExternalHelpers requires explicit dependency inclusion in whitelist for composite helpers such as inherits requiring setPrototypeOf

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:
  - buildExternalHelpers

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:fcc78e3690054d8f790a1a10cf11ed9077c09120db8a4c3d23f6ed3b9491909a","contract":["babel.buildExternalHelpers is exported as a function by @babel/core and returns a string of helper definitions","buildExternalHelpers defaults to global outputType wrapping helpers in an IIFE assigning to global.babelHelpers","buildExternalHelpers produces UMD formatted wrapper when outputType is set to umd","buildExternalHelpers produces standalone var declarations when outputType is set to var","buildExternalHelpers restricts generated code to specified helpers when whitelist array is provided","buildExternalHelpers outputs only the container wrapper without helper implementations when whitelist is empty array","buildExternalHelpers throws an Error with Unsupported output type message when given an invalid outputType","buildExternalHelpers requires explicit dependency inclusion in whitelist for composite helpers such as inherits requiring setPrototypeOf"],"goal":"verify pkg:npm/%40babel/core@7.29.6","kind":"HOW","packages":["pkg:npm/%40babel/core@7.29.6"],"schemaVersion":1,"symbols":["buildExternalHelpers"]},"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":["buildExternalHelpers"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-core-build-external-helpers",
  "version": "1.0.0",
  "description": "verify @babel/core.buildExternalHelpers 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": [
    "buildExternalHelpers"
  ]
}
src/index.mjs
import * as babel from "@babel/core";

/**
 * Builds external helper code from @babel/core.
 *
 * @param {string[]|null|undefined} [whitelist] - List of helper names to include.
 * @param {"global"|"umd"|"var"} [outputType="global"] - Output format type.
 * @returns {string} The generated helper code.
 */
export function buildHelpers(whitelist, outputType) {
  return babel.buildExternalHelpers(whitelist, outputType);
}

/**
 * Generates external helpers in var format for a given whitelist.
 *
 * @param {string[]} [whitelist] - List of helper names to include.
 * @returns {string} The generated var-format helper code.
 */
export function buildVarHelpers(whitelist) {
  return babel.buildExternalHelpers(whitelist, "var");
}

/**
 * Evaluates var-format helper code in an isolated scope and returns the babelHelpers object.
 *
 * @param {string[]} [whitelist] - List of helper names to include.
 * @returns {Record<string, Function>} The instantiated babelHelpers object.
 */
export function evaluateVarHelpers(whitelist) {
  const code = buildVarHelpers(whitelist);
  const factory = new Function(code + "; return babelHelpers;");
  return factory();
}

export { babel };
test/contract.mjs
import assert from "node:assert/strict";
import * as babel from "@babel/core";
import {
  buildHelpers,
  buildVarHelpers,
  evaluateVarHelpers,
} from "../src/index.mjs";

function runContracts() {
  // Contract 1: babel.buildExternalHelpers is exported as a function by @babel/core and returns a string of helper definitions
  {
    assert.strictEqual(
      typeof babel.buildExternalHelpers,
      "function",
      "babel.buildExternalHelpers must be exported as a function"
    );

    const result = buildHelpers();
    assert.strictEqual(
      typeof result,
      "string",
      "buildExternalHelpers must return a string"
    );
    assert.ok(
      result.length > 0,
      "generated helpers string must not be empty"
    );
  }

  // Contract 2: buildExternalHelpers defaults to global outputType wrapping helpers in an IIFE assigning to global.babelHelpers
  {
    const result = buildHelpers();
    assert.ok(
      result.includes("global.babelHelpers = {}"),
      "default output must assign to global.babelHelpers"
    );
    assert.ok(
      result.includes('typeof global === "undefined" ? self : global'),
      "default output must detect global or self in IIFE invocation"
    );
  }

  // Contract 3: buildExternalHelpers produces UMD formatted wrapper when outputType is set to umd
  {
    const result = buildHelpers(undefined, "umd");
    assert.strictEqual(
      typeof result,
      "string",
      "umd output must be a string"
    );
    assert.ok(
      result.includes('typeof define === "function" && define.amd'),
      "umd output must check for define.amd"
    );
    assert.ok(
      result.includes("factory(root.babelHelpers = {})"),
      "umd output must invoke factory with root.babelHelpers"
    );
  }

  // Contract 4: buildExternalHelpers produces standalone var declarations when outputType is set to var
  {
    const result = buildHelpers(undefined, "var");
    assert.strictEqual(
      typeof result,
      "string",
      "var output must be a string"
    );
    assert.ok(
      result.startsWith("var babelHelpers = {};"),
      "var output must declare babelHelpers variable at top"
    );
    assert.ok(
      result.trimEnd().endsWith("babelHelpers;"),
      "var output must end with babelHelpers reference expression"
    );
  }

  // Contract 5: buildExternalHelpers restricts generated code to specified helpers when whitelist array is provided
  {
    const result = buildHelpers(["classCallCheck"], "var");
    assert.ok(
      result.includes("classCallCheck"),
      "whitelisted helper classCallCheck must be present"
    );
    assert.ok(
      !result.includes("_inherits"),
      "unselected helper inherits must not be included"
    );
  }

  // Contract 6: buildExternalHelpers outputs only the container wrapper without helper implementations when whitelist is empty array
  {
    const result = buildHelpers([], "var");
    assert.strictEqual(
      result.trim(),
      "var babelHelpers = {};\nbabelHelpers;",
      "empty whitelist must produce only empty container shell"
    );
  }

  // Contract 7: buildExternalHelpers throws an Error with Unsupported output type message when given an invalid outputType
  {
    assert.throws(
      () => {
        buildHelpers(undefined, "unsupported_format");
      },
      (err) => {
        return err instanceof Error && /Unsupported output type/i.test(err.message);
      },
      "must throw error matching Unsupported output type for invalid outputType"
    );
  }

  // Contract 8: buildExternalHelpers requires explicit dependency inclusion in whitelist for composite helpers such as inherits requiring setPrototypeOf
  {
    const helpersOnlyInherits = evaluateVarHelpers(["inherits"]);
    assert.strictEqual(
      typeof helpersOnlyInherits.inherits,
      "function",
      "inherits must be defined when requested"
    );
    assert.strictEqual(
      typeof helpersOnlyInherits.setPrototypeOf,
      "undefined",
      "setPrototypeOf must not be included automatically when not in whitelist"
    );

    const fullHelpers = evaluateVarHelpers(["inherits", "setPrototypeOf"]);
    assert.strictEqual(
      typeof fullHelpers.inherits,
      "function",
      "inherits must be defined"
    );
    assert.strictEqual(
      typeof fullHelpers.setPrototypeOf,
      "function",
      "setPrototypeOf must be defined"
    );

    function SuperType() {}
    SuperType.prototype.identify = function () {
      return "base";
    };

    function SubType() {}
    fullHelpers.inherits(SubType, SuperType);

    const instance = new SubType();
    assert.ok(
      instance instanceof SuperType,
      "instance of SubType must be an instance of SuperType via inherits"
    );
    assert.strictEqual(
      instance.identify(),
      "base",
      "inherited prototype method must return expected value"
    );
  }

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

runContracts();

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