CodeSampleX

サンプル

esbuild 0.25.12

検証済みサンプル — npm esbuild 0.25.12. node 22 · linux alpine/x64 · docker で contract を実行し、成功しました: assert esbuild exports expected version 0.25.12

sha256:52a8ddc4ee17fb9b9b2e1dcf359abf2f5d7402d31d3e7402cecf3626b0ebea21

このネットワークが提供するのは一つだけです。ビルドされるサンプル。サンドボックスで実行し、署名済みの受領証を保管します。等級はつけず、何も保証しません — 同じコードがあなたの環境でビルドされるかは測定していません。 合格した契約受領証を提出した異なる署名鍵の数です。1 なら作者だけ、2 以上なら他の誰かもビルドしています。鍵は自己生成で背後に登録された身元がないため、数えているのは人ではなく鍵です。 MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

証拠の基準
署名済みコントラクト合格
検証レシート
2
ビルドした署名鍵
1
宣言された環境 linux 24 · ubuntu · glibc 2.39 x64 npm

検証実行環境

環境 コントラクト ステージ 実行日
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-21
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…		 2026-09-08

ケース

HOW
ゴール
verify pkg:npm/esbuild@0.25.12
パッケージ
作成日
2026-08-21T14:53:02Z

コントラクト

  1. assert esbuild exports expected version 0.25.12
  2. assert esbuild.buildSync bundles TypeScript source code into ESM in memory
  3. assert esbuild.transformSync transpiles JSX syntax to JavaScript with minification
  4. assert esbuild.formatMessagesSync formats diagnostic error messages with file location and source line context
  5. assert esbuild.analyzeMetafileSync computes formatted bundle breakdown from build metafile

ファイル

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

ソースアーティファクトをダウンロード (tar.gz)

ソース

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/esbuild@0.25.12
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/esbuild@0.25.12

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:sha256:84ed1105ea01c35e7e429c14eb2d88ece0a66c701ca5597c27184772d00cbe7c","contract":["assert esbuild exports expected version 0.25.12","assert esbuild.buildSync bundles TypeScript source code into ESM in memory","assert esbuild.transformSync transpiles JSX syntax to JavaScript with minification","assert esbuild.formatMessagesSync formats diagnostic error messages with file location and source line context","assert esbuild.analyzeMetafileSync computes formatted bundle breakdown from build metafile"],"goal":"verify pkg:npm/esbuild@0.25.12","kind":"HOW","packages":["pkg:npm/esbuild@0.25.12"],"schemaVersion":1},"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/esbuild@0.25.12"],"schemaVersion":1,"subject":"pkg:npm/esbuild@0.25.12","verifierAdapter":"node-typescript@1"}
package-lock.json
{
  "name": "sample-esbuild",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-esbuild",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
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      "cpu": [
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        "@esbuild/openharmony-arm64": "0.25.12",
        "@esbuild/sunos-x64": "0.25.12",
        "@esbuild/win32-arm64": "0.25.12",
        "@esbuild/win32-ia32": "0.25.12",
        "@esbuild/win32-x64": "0.25.12"
      }
    }
  }
}
package.json
{
  "name": "sample-esbuild",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "main": "src/index.mjs",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "esbuild": "0.25.12"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/esbuild@0.25.12",
  "kind": "HOW",
  "packages": [
    "pkg:npm/esbuild@0.25.12"
  ]
}
src/index.mjs
import * as esbuild from 'esbuild';

/**
 * Bundles TypeScript or JavaScript source code in memory.
 * @param {string} contents - Source code contents.
 * @param {'ts' | 'js' | 'jsx' | 'tsx'} loader - Loader type.
 * @returns {import('esbuild').BuildResult} Build result object.
 */
export function bundleInMemory(contents, loader = 'ts') {
  return esbuild.buildSync({
    stdin: {
      contents,
      loader,
      resolveDir: process.cwd(),
    },
    format: 'esm',
    write: false,
    bundle: true,
  });
}

/**
 * Transpiles and minifies source code.
 * @param {string} contents - Source code contents.
 * @param {import('esbuild').TransformOptions} options - Transform options.
 * @returns {import('esbuild').TransformResult} Transform result object.
 */
export function transformSource(contents, options = {}) {
  return esbuild.transformSync(contents, options);
}

/**
 * Formats diagnostic messages.
 * @param {import('esbuild').PartialMessage[]} messages - Diagnostic messages.
 * @param {import('esbuild').FormatMessagesOptions} options - Formatting options.
 * @returns {string[]} Array of formatted message strings.
 */
export function formatDiagnostics(messages, options = { kind: 'error', color: false }) {
  return esbuild.formatMessagesSync(messages, options);
}

/**
 * Analyzes build metafile.
 * @param {import('esbuild').Metafile} metafile - Build metafile object.
 * @param {import('esbuild').AnalyzeMetafileOptions} options - Analysis options.
 * @returns {string} Formatted metafile breakdown string.
 */
export function analyzeBuild(metafile, options = { verbose: false, color: false }) {
  return esbuild.analyzeMetafileSync(metafile, options);
}

export { esbuild };
test/contract.mjs
import assert from 'node:assert';
import {
  esbuild,
  bundleInMemory,
  transformSource,
  formatDiagnostics,
  analyzeBuild,
} from '../src/index.mjs';

// 1. esbuild exports expected version 0.25.12
assert.strictEqual(esbuild.version, '0.25.12', 'esbuild version matches 0.25.12');

// 2. esbuild.buildSync bundles TypeScript source code into ESM in memory
const buildRes = bundleInMemory('export const calculate = (x: number, y: number): number => x * y + 10;', 'ts');
assert.strictEqual(buildRes.errors.length, 0, 'build completed with zero errors');
assert.strictEqual(buildRes.outputFiles.length, 1, 'build emitted one output file');
assert(buildRes.outputFiles[0].text.includes('calculate = (x, y) => x * y + 10'), 'bundle contains compiled function');

// 3. esbuild.transformSync transpiles JSX syntax to JavaScript with minification
const transformRes = transformSource('const View = () => <section><span>Active</span></section>;', {
  loader: 'jsx',
  minify: true,
});
assert.strictEqual(transformRes.warnings.length, 0, 'transform completed with zero warnings');
assert(transformRes.code.includes('React.createElement'), 'JSX converted to React.createElement');

// 4. esbuild.formatMessagesSync formats diagnostic error messages with file location and source line context
const formatted = formatDiagnostics([
  {
    text: 'Unexpected token in expression',
    location: {
      file: 'index.ts',
      line: 4,
      column: 12,
      lineText: 'const total = + ;',
    },
  },
], {
  kind: 'error',
  color: false,
});
assert.strictEqual(formatted.length, 1, 'formatted exactly one error message');
assert(formatted[0].includes('Unexpected token in expression'), 'formatted message includes error text');
assert(formatted[0].includes('index.ts:4:12'), 'formatted message includes file line and column');

// 5. esbuild.analyzeMetafileSync computes formatted bundle breakdown from build metafile
const metaBuild = esbuild.buildSync({
  stdin: {
    contents: 'const msg = "bundle meta test"; console.log(msg);',
    loader: 'js',
    resolveDir: process.cwd(),
  },
  metafile: true,
  write: false,
});
assert(metaBuild.metafile !== undefined, 'build generated metafile');
const analysis = analyzeBuild(metaBuild.metafile, {
  verbose: false,
  color: false,
});
assert(typeof analysis === 'string', 'metafile analysis returns string');
assert(analysis.length > 0, 'metafile analysis string is non-empty');

console.log('Contract tests passed successfully.');

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