CodeSampleX

Exemple

jest-watcher 29.7.0: TestWatcher

Échantillon vérifié pour npm jest-watcher 29.7.0: TestWatcher. Le contrat s'est exécuté sur node 22 · linux debian/x64 · docker et a réussi.

sha256:0e0d2b150b7b0e0f5a36660380fc143862f1c85ee5f1acde1548b6f71a54f006

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 debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-05

Cas

HOW
Objectif
verify jest-watcher.TestWatcher in pkg:npm/jest-watcher@29.7.0
Paquets
Symboles
  • jest-watcher.TestWatcher
Créé
2026-09-05T21:42:42Z

Contrat

  1. TestWatcher class instantiates with watch mode configuration flag
  2. TestWatcher initializes state with interrupted flag set to false
  3. TestWatcher isInterrupted reflects current interrupted state
  4. TestWatcher setState updates state properties asynchronously
  5. TestWatcher emits change event with updated state upon setState
  6. TestWatcher supports event listener registration and unsubscription inherited from Emittery

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 jest-watcher.TestWatcher in pkg:npm/jest-watcher@29.7.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-watcher@29.7.0
Demonstrate these symbols/APIs:
  - jest-watcher.TestWatcher

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:b8af8acec36fcec15b65df64a45d06ee701e648ba2f5341ead96c38b4e6b7c2c","contract":["TestWatcher class instantiates with watch mode configuration flag","TestWatcher initializes state with interrupted flag set to false","TestWatcher isInterrupted reflects current interrupted state","TestWatcher setState updates state properties asynchronously","TestWatcher emits change event with updated state upon setState","TestWatcher supports event listener registration and unsubscription inherited from Emittery"],"goal":"verify jest-watcher.TestWatcher in pkg:npm/jest-watcher@29.7.0","kind":"HOW","packages":["pkg:npm/jest-watcher@29.7.0"],"schemaVersion":1,"symbols":["jest-watcher.TestWatcher"]},"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-watcher@29.7.0"],"schemaVersion":1,"subject":"pkg:npm/jest-watcher@29.7.0","symbols":["jest-watcher.TestWatcher"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "verify-jest-watcher",
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  "lockfileVersion": 3,
  "requires": true,
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    "": {
      "name": "verify-jest-watcher",
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      }
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package.json
{
  "name": "verify-jest-watcher",
  "version": "1.0.0",
  "type": "module",
  "description": "Verification sample for jest-watcher TestWatcher",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "jest-watcher": "29.7.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify jest-watcher.TestWatcher in pkg:npm/jest-watcher@29.7.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-watcher@29.7.0"
  ],
  "symbols": [
    "jest-watcher.TestWatcher"
  ]
}
src/index.mjs
import { TestWatcher } from 'jest-watcher';

/**
 * Creates and initializes a TestWatcher instance.
 * @param {object} options
 * @param {boolean} options.isWatchMode
 * @returns {TestWatcher}
 */
export function createTestWatcher({ isWatchMode = false } = {}) {
  return new TestWatcher({ isWatchMode });
}

export { TestWatcher };
export default TestWatcher;
test/contract.mjs
import assert from 'node:assert/strict';
import { TestWatcher, createTestWatcher } from '../src/index.mjs';

// 1. TestWatcher class instantiates with watch mode configuration flag
{
  const watcherWatch = new TestWatcher({ isWatchMode: true });
  assert.equal(watcherWatch.isWatchMode(), true);

  const watcherNonWatch = new TestWatcher({ isWatchMode: false });
  assert.equal(watcherNonWatch.isWatchMode(), false);

  const helperWatcher = createTestWatcher({ isWatchMode: true });
  assert.equal(helperWatcher.isWatchMode(), true);
}

// 2. TestWatcher initializes state with interrupted flag set to false
{
  const watcher = new TestWatcher({ isWatchMode: true });
  assert.deepEqual(watcher.state, { interrupted: false });
}

// 3. TestWatcher isInterrupted reflects current interrupted state
{
  const watcher = new TestWatcher({ isWatchMode: true });
  assert.equal(watcher.isInterrupted(), false);
}

// 4. TestWatcher setState updates state properties asynchronously
{
  const watcher = new TestWatcher({ isWatchMode: true });
  await watcher.setState({ interrupted: true });
  assert.equal(watcher.isInterrupted(), true);
  assert.equal(watcher.state.interrupted, true);

  await watcher.setState({ interrupted: false });
  assert.equal(watcher.isInterrupted(), false);
  assert.equal(watcher.state.interrupted, false);
}

// 5. TestWatcher emits change event with updated state upon setState
{
  const watcher = new TestWatcher({ isWatchMode: true });
  const events = [];

  watcher.on('change', (state) => {
    events.push({ ...state });
  });

  await watcher.setState({ interrupted: true });
  assert.equal(events.length, 1);
  assert.deepEqual(events[0], { interrupted: true });

  await watcher.setState({ interrupted: false });
  assert.equal(events.length, 2);
  assert.deepEqual(events[1], { interrupted: false });
}

// 6. TestWatcher supports event listener registration and unsubscription inherited from Emittery
{
  const watcher = new TestWatcher({ isWatchMode: true });
  let count = 0;
  const unsubscribe = watcher.on('change', () => {
    count++;
  });

  await watcher.setState({ interrupted: true });
  assert.equal(count, 1);

  unsubscribe();
  await watcher.setState({ interrupted: false });
  assert.equal(count, 1);
}

console.log('All jest-watcher.TestWatcher contract assertions passed.');

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