CodeSampleX

Exemple

jest-validate 30.4.1: format

Échantillon vérifié pour npm jest-validate 30.4.1: format. Le contrat s'est exécuté sur node 22 · linux debian/x64 · docker et a réussi.

sha256:327d4359513e63a6b95364d3f9bf71863559370ebc7d16dc9763cbb92b678bd0

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 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Environnements des exécutions de vérification

Environnement Contrat Étapes Exécution
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…		 2026-09-06

Cas

HOW
Objectif
verify jest-validate.format in pkg:npm/jest-validate@30.4.1
Paquets
Symboles
  • jest-validate.format
Environnement
node 22.23.2
Créé
2026-09-06T07:53:27Z

Contrat

  1. formatValue formats primitive values into compact string representations
  2. formatValue formats null and undefined values correctly
  3. formatValue formats plain objects and arrays with minimal whitespace
  4. formatValue converts functions into their string source representations

Fichiers

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • 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 jest-validate.format in pkg:npm/jest-validate@30.4.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-validate@30.4.1
Demonstrate these symbols/APIs:
  - jest-validate.format

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:sha256:36943b888e55d9a5a8d958148f35ba290b481d2d6bc80d6e4aa6c6880238fc60","contract":["formatValue formats primitive values into compact string representations","formatValue formats null and undefined values correctly","formatValue formats plain objects and arrays with minimal whitespace","formatValue converts functions into their string source representations"],"goal":"verify jest-validate.format in pkg:npm/jest-validate@30.4.1","kind":"HOW","packages":["pkg:npm/jest-validate@30.4.1"],"schemaVersion":1,"symbols":["jest-validate.format"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/jest-validate@30.4.1"],"schemaVersion":1,"subject":"pkg:npm/jest-validate@30.4.1","symbols":["jest-validate.format"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-jest-validate-format",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of jest-validate.format",
  "main": "src/index.js",
  "dependencies": {
    "jest-validate": "30.4.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify jest-validate.format in pkg:npm/jest-validate@30.4.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-validate@30.4.1"
  ],
  "symbols": [
    "jest-validate.format"
  ]
}
src/index.js
const { format } = require('jest-validate');

/**
 * Format a value into a concise string representation using jest-validate.
 * @param {unknown} value - Value to format.
 * @returns {string} Formatted string representation.
 */
function formatValue(value) {
  return format(value);
}

module.exports = {
  formatValue,
  format
};
test/contract.mjs
import assert from 'node:assert';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const { formatValue, format } = require('../src/index.js');

// 1. Export verification
assert.strictEqual(typeof formatValue, 'function', 'formatValue should be a function');
assert.strictEqual(typeof format, 'function', 'format should be a function');

// 2. Format primitive values into compact string representations
assert.strictEqual(formatValue('hello'), '"hello"', 'String should be formatted with double quotes');
assert.strictEqual(formatValue(42), '42', 'Number should be formatted to numeric string');
assert.strictEqual(formatValue(true), 'true', 'Boolean true should be formatted as "true"');
assert.strictEqual(formatValue(false), 'false', 'Boolean false should be formatted as "false"');

// 3. Format null and undefined values correctly
assert.strictEqual(formatValue(null), 'null', 'null should be formatted as "null"');
assert.strictEqual(formatValue(undefined), 'undefined', 'undefined should be formatted as "undefined"');

// 4. Format plain objects and arrays with minimal whitespace
assert.strictEqual(
  formatValue({ a: 1, b: 'two' }),
  '{"a": 1, "b": "two"}',
  'Object should be formatted with compact key-value pairs'
);
assert.strictEqual(
  formatValue([1, 'two', true]),
  '[1, "two", true]',
  'Array should be formatted with compact comma-separated items'
);
assert.strictEqual(
  formatValue({ nested: { count: 10 }, list: [1, 2] }),
  '{"list": [1, 2], "nested": {"count": 10}}',
  'Nested objects and arrays should be formatted consistently'
);

// 5. Convert functions into their string source representations
const sampleFunc = (x) => x * 2;
assert.strictEqual(
  formatValue(sampleFunc),
  sampleFunc.toString(),
  'Function should be formatted using its source string'
);

function namedFunc(a, b) {
  return a + b;
}
assert.strictEqual(
  formatValue(namedFunc),
  namedFunc.toString(),
  'Named function should be formatted using its source string'
);

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

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