CodeSampleX

Exemple

jest-message-util 29.7.0

Échantillon vérifié pour npm jest-message-util 29.7.0. Le contrat s'est exécuté sur node 22 · linux alpine/x64 · docker et a réussi.

sha256:f78036a65e8e8c24469ff4db6d55960ee94199076026317501967707e51edf80

Ce réseau offre une seule chose : un échantillon qui compile. Il l'a exécuté dans un bac à sable et conservé le reçu signé. Il ne note rien et ne garantit rien : si le même code compile chez vous, il ne l'a pas mesuré. Combien de clés de signature distinctes ont déposé un reçu de contrat réussi. Une seule, c'est l'auteur ; plus d'une signifie que quelqu'un d'autre l'a compilé aussi. Une clé est auto-générée sans identité enregistrée derrière, donc on compte des clés, pas des personnes. MIT-0

Preuves d'exécution

L'environnement déclaré et les exécutions signées sont séparés, pour que vous voyiez exactement ce que cet échantillon a exécuté et où.

Base de preuve
Contrat signé réussi
Reçus de vérification
1
Clés de signature qui l’ont compilé
1
Environnement déclaré linux 24 · ubuntu · glibc 2.39 x64 npm

Environnements des exécutions de vérification

Environnement Contrat Étapes Exécution
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Cas

HOW
Objectif
verify pkg:npm/jest-message-util@29.7.0
Paquets
Créé
2026-08-27T15:26:45Z

Contrat

  1. separateMessageFromStack separates the error message header from stack trace lines
  2. getStackTraceLines filters out Node.js internal runtime frames from stack traces
  3. getTopFrame parses the topmost call frame into file, line, and column details
  4. formatPath converts absolute paths within stack trace lines to rootDir-relative paths
  5. formatStackTrace formats and cleans error stack traces against configuration options
  6. formatExecError formats uncaught execution errors with test suite failure headers and stacks
  7. formatResultsErrors formats test failure assertion results with ancestor suite titles
  8. indentAllLines indents multiline text with standard indentation prefix

Fichiers

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

Télécharger l’artefact source (tar.gz)

Code source

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/jest-message-util@29.7.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-message-util@29.7.0

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:c45ee262031e6c2f8d85ff38b382e0b3450fc2cde731b367f94a494e6861472f","contract":["separateMessageFromStack separates the error message header from stack trace lines","getStackTraceLines filters out Node.js internal runtime frames from stack traces","getTopFrame parses the topmost call frame into file, line, and column details","formatPath converts absolute paths within stack trace lines to rootDir-relative paths","formatStackTrace formats and cleans error stack traces against configuration options","formatExecError formats uncaught execution errors with test suite failure headers and stacks","formatResultsErrors formats test failure assertion results with ancestor suite titles","indentAllLines indents multiline text with standard indentation prefix"],"goal":"verify pkg:npm/jest-message-util@29.7.0","kind":"HOW","packages":["pkg:npm/jest-message-util@29.7.0"],"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/jest-message-util@29.7.0"],"schemaVersion":1,"subject":"pkg:npm/jest-message-util@29.7.0","verifierAdapter":"node-typescript@1"}
package-lock.json
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    "node_modules/@babel/code-frame": {
      "version": "7.29.7",
      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.7.tgz",
      "integrity": "sha512-Aup7aUOfpbAUg2ROOJN6Iw5f9DMBlzu0mIkm/malLQFN/YQgO48wCj0Kxa3sEHJvPVFg7siR+qRInwXd2qhQKw==",
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      "dependencies": {
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      "license": "MIT",
      "dependencies": {
        "is-number": "^7.0.0"
      },
      "engines": {
        "node": ">=8.0"
      }
    },
    "node_modules/undici-types": {
      "version": "8.3.0",
      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
      "license": "MIT"
    }
  }
}
package.json
{
  "name": "sample-jest-message-util",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "jest-message-util": "29.7.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/jest-message-util@29.7.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-message-util@29.7.0"
  ]
}
src/index.mjs
import {
  formatExecError,
  formatPath,
  formatResultsErrors,
  formatStackTrace,
  getStackTraceLines,
  getTopFrame,
  indentAllLines,
  separateMessageFromStack,
} from 'jest-message-util';

export {
  formatExecError,
  formatPath,
  formatResultsErrors,
  formatStackTrace,
  getStackTraceLines,
  getTopFrame,
  indentAllLines,
  separateMessageFromStack,
};

export function cleanStackTrace(stack, rootDir = process.cwd(), noStackTrace = false) {
  return formatStackTrace(stack, { rootDir, testMatch: [] }, { noStackTrace });
}

export function formatErrorMessage(error, rootDir = process.cwd(), noTitle = false) {
  return formatExecError(error, { rootDir, testMatch: [] }, { noStackTrace: false }, undefined, undefined, noTitle);
}

export function getTopStackLocation(stack) {
  const lines = getStackTraceLines(stack);
  return getTopFrame(lines);
}
test/contract.mjs
import assert from 'node:assert';
import {
  formatExecError,
  formatPath,
  formatResultsErrors,
  formatStackTrace,
  getStackTraceLines,
  getTopFrame,
  indentAllLines,
  separateMessageFromStack,
  cleanStackTrace,
  formatErrorMessage,
  getTopStackLocation,
} from '../src/index.mjs';

const sampleRootDir = '/workspace/project';
const config = { rootDir: sampleRootDir, testMatch: [] };
const options = { noStackTrace: false };

// 1. separateMessageFromStack separates the error message header from stack trace lines
{
  const rawStack = 'Error: something went wrong\n    at Object.<anonymous> (/workspace/project/src/index.js:10:15)\n    at Module._compile (node:internal/modules/cjs/loader:1:1)';
  const result = separateMessageFromStack(rawStack);
  assert.strictEqual(result.message, 'something went wrong');
  assert.strictEqual(result.stack, '\n    at Object.<anonymous> (/workspace/project/src/index.js:10:15)\n    at Module._compile (node:internal/modules/cjs/loader:1:1)');

  const customErrorStack = 'CustomError: validation failed\n    at validate (/workspace/project/src/val.js:5:2)';
  const customResult = separateMessageFromStack(customErrorStack);
  assert.strictEqual(customResult.message, 'CustomError: validation failed');
  assert.strictEqual(customResult.stack, '\n    at validate (/workspace/project/src/val.js:5:2)');
}

// 2. getStackTraceLines filters out Node.js internal runtime frames from stack traces
{
  const rawStack = 'Error: execution error\n    at userFunction (/workspace/project/src/app.js:20:5)\n    at ModuleJob.run (node:internal/modules/esm/module_job:1:1)\n    at async asyncRunEntryPoint (node:internal/modules/run_main:2:2)';
  const lines = getStackTraceLines(rawStack);
  assert.strictEqual(lines.length, 2);
  assert.strictEqual(lines[0], 'Error: execution error');
  assert.strictEqual(lines[1], '    at userFunction (/workspace/project/src/app.js:20:5)');
}

// 3. getTopFrame parses the topmost call frame into file, line, and column details
{
  const lines = [
    'Error: top frame test',
    '    at calculateTotal (/workspace/project/src/calc.js:42:18)',
    '    at runStep (/workspace/project/src/runner.js:10:5)',
  ];
  const topFrame = getTopFrame(lines);
  assert.notStrictEqual(topFrame, null);
  assert.strictEqual(topFrame.file, '/workspace/project/src/calc.js');
  assert.strictEqual(topFrame.line, 42);
  assert.strictEqual(topFrame.column, 18);
  assert.strictEqual(topFrame.function, 'calculateTotal');

  const helperFrame = getTopStackLocation(lines.join('\n'));
  assert.deepStrictEqual(helperFrame, topFrame);

  const emptyFrame = getTopFrame([]);
  assert.strictEqual(emptyFrame, null);
}

// 4. formatPath converts absolute paths within stack trace lines to rootDir-relative paths
{
  const line = '    at Object.<anonymous> (/workspace/project/src/index.js:15:20)';
  const formatted = formatPath(line, config);
  assert.strictEqual(formatted, '    at Object.<anonymous> (src/index.js:15:20)');
}

// 5. formatStackTrace formats and cleans error stack traces against configuration options
{
  const rawStack = 'Error: failed operation\n    at run (/workspace/project/src/index.js:12:10)\n    at node:internal/main:1:1';
  const formatted = formatStackTrace(rawStack, config, options);
  assert(formatted.includes('src/index.js:12:10'));
  assert(!formatted.includes('node:internal'));

  const helperFormatted = cleanStackTrace(rawStack, sampleRootDir, false);
  assert.strictEqual(helperFormatted, formatted);

  const suppressed = formatStackTrace(rawStack, config, { noStackTrace: true });
  assert(suppressed.includes('Error: failed operation'));
  assert(suppressed.includes('src/index.js:12:10'));
}

// 6. formatExecError formats uncaught execution errors with test suite failure headers and stacks
{
  const err = new Error('database connection timeout');
  err.stack = 'Error: database connection timeout\n    at connect (/workspace/project/src/db.js:8:12)\n    at node:internal/process:1:1';
  const formatted = formatExecError(err, config, options);
  assert(formatted.includes('● Test suite failed to run'));
  assert(formatted.includes('database connection timeout'));
  assert(formatted.includes('src/db.js:8:12'));

  const noTitleFormatted = formatErrorMessage(err, sampleRootDir, true);
  assert(!noTitleFormatted.includes('● Test suite failed to run'));
  assert(noTitleFormatted.includes('database connection timeout'));
}

// 7. formatResultsErrors formats test failure assertion results with ancestor suite titles
{
  const testResults = [
    {
      title: 'should validate payload schema',
      ancestorTitles: ['Validator', 'JSON schema'],
      status: 'failed',
      failureMessages: [
        'Error: expect(received).toBe(expected)\n\nExpected: 200\nReceived: 500\n    at Object.<anonymous> (/workspace/project/test/api.test.js:25:10)'
      ],
      failureDetails: [{}]
    }
  ];

  const resultError = formatResultsErrors(testResults, config, options);
  assert.notStrictEqual(resultError, null);
  assert(resultError.includes('● Validator › JSON schema › should validate payload schema'));
  assert(resultError.includes('Expected: 200'));
  assert(resultError.includes('Received: 500'));
  assert(resultError.includes('test/api.test.js:25:10'));
}

// 8. indentAllLines indents multiline text with standard indentation prefix
{
  const input = 'first line\nsecond line\nthird line';
  const indented = indentAllLines(input);
  assert.strictEqual(indented, '    first line\n    second line\n    third line');

  const withEmptyLine = 'first line\n\nsecond line';
  assert.strictEqual(indentAllLines(withEmptyLine), '    first line\n\n    second line');
}

console.log('All jest-message-util contract assertions passed.');

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