Sample
jest-validate 29.7.0: logValidationWarning
Verified sample for npm jest-validate 29.7.0: logValidationWarning. The contract ran on node 22 · linux alpine/x64 · docker and passed.
sha256:0b6065e8fe95877209d338f5e8410d415493b8415c14970a40a430b463eb0f55
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| 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 |
Case
HOW- Goal
- verify jest-validate.logValidationWarning in pkg:npm/jest-validate@29.7.0
- Packages
- Symbols
-
- jest-validate.logValidationWarning
- Environment
- node 22.23.2
- Created
- 2026-08-21T05:01:09Z
Contract
- logValidationWarning formats and logs warning messages to console.warn
- logValidationWarning appends guidance comments when provided
- warnDeprecatedOption formats standardized deprecation notices with replacement suggestions
- logValidationWarning formats single warning message when comment is omitted
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.mjs
Source
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.logValidationWarning in pkg:npm/jest-validate@29.7.0
Kind: HOW
Use EXACTLY these public packages and versions:
- pkg:npm/jest-validate@29.7.0
Demonstrate these symbols/APIs:
- jest-validate.logValidationWarning
Constraints:
- executionContext: node
Required runtime conditions:
- ecosystem: npm
- language: javascript
- moduleSystem: cjs
- packageManager: npm@10.9.8
- runtime: node@22.23.2
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.
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{
"name": "sample-jest-validate-log-validation-warning",
"version": "1.0.0",
"private": true,
"description": "Clean-room verification of jest-validate.logValidationWarning",
"main": "src/index.js",
"dependencies": {
"jest-validate": "29.7.0"
}
}
{
"schemaVersion": 1,
"goal": "verify jest-validate.logValidationWarning in pkg:npm/jest-validate@29.7.0",
"kind": "HOW",
"packages": [
"pkg:npm/jest-validate@29.7.0"
],
"symbols": [
"jest-validate.logValidationWarning"
],
"constraints": {
"executionContext": "node"
},
"runtimeConditions": {
"ecosystem": "npm",
"language": "javascript",
"moduleSystem": "cjs",
"packageManager": "npm@10.9.8",
"runtime": "node@22.23.2"
}
}
const { logValidationWarning } = require('jest-validate');
/**
* Log a formatted configuration warning.
* @param {string} title - Warning category or header.
* @param {string} message - Warning description message.
* @param {string} [comment] - Optional recommendation or comment.
*/
function warnOption(title, message, comment) {
logValidationWarning(title, message, comment);
}
/**
* Log a standardized deprecation notice for an option.
* @param {string} optionName - Name of the deprecated option.
* @param {string} replacement - Recommended replacement option name.
*/
function warnDeprecatedOption(optionName, replacement) {
const title = 'Deprecation Warning';
const message = `Option "${optionName}" was deprecated.`;
const comment = `Please use "${replacement}" instead.`;
logValidationWarning(title, message, comment);
}
module.exports = {
logValidationWarning,
warnOption,
warnDeprecatedOption
};
import assert from 'node:assert';
import { createRequire } from 'node:module';
const require = createRequire(import.meta.url);
const { logValidationWarning, warnOption, warnDeprecatedOption } = require('../src/index.js');
function stripAnsi(str) {
return typeof str === 'string' ? str.replace(/\u001b\[[0-9;]*m/g, '') : str;
}
// 1. Export verification
assert.strictEqual(typeof logValidationWarning, 'function', 'logValidationWarning should be a function');
assert.strictEqual(typeof warnOption, 'function', 'warnOption should be a function');
assert.strictEqual(typeof warnDeprecatedOption, 'function', 'warnDeprecatedOption should be a function');
// Intercept console.warn for testing output format
const originalWarn = console.warn;
let capturedWarnings = [];
console.warn = (...args) => {
capturedWarnings.push(args.map(a => stripAnsi(a)).join(' '));
};
try {
// 2. Validate warning message format with title and message
capturedWarnings = [];
warnOption('Validation Warning', 'Unknown option "timeoutSec".');
assert.strictEqual(capturedWarnings.length, 1, 'Should log one warning message');
assert.ok(capturedWarnings[0].includes('Validation Warning:'), 'Warning should contain header title');
assert.ok(capturedWarnings[0].includes('Unknown option "timeoutSec".'), 'Warning should contain message body');
// 3. Validate warning message format with title, message, and guidance comment
capturedWarnings = [];
warnOption('Validation Warning', 'Unknown option "timeoutSec".', 'Did you mean "timeoutSeconds"?');
assert.strictEqual(capturedWarnings.length, 1, 'Should log one warning message');
assert.ok(
capturedWarnings[0].includes('Validation Warning:\n\nUnknown option "timeoutSec".\n\nDid you mean "timeoutSeconds"?'),
'Warning should format title, message, and comment with double newlines'
);
// 4. Validate deprecation warning helper
capturedWarnings = [];
warnDeprecatedOption('usePolling', 'watchOptions.poll');
assert.strictEqual(capturedWarnings.length, 1, 'Should log one deprecation warning');
assert.ok(capturedWarnings[0].includes('Deprecation Warning:'), 'Deprecation warning should have correct header');
assert.ok(capturedWarnings[0].includes('Option "usePolling" was deprecated.'), 'Deprecation should specify option name');
assert.ok(capturedWarnings[0].includes('Please use "watchOptions.poll" instead.'), 'Deprecation should specify replacement');
// 5. Validate direct logValidationWarning call when comment is null
capturedWarnings = [];
logValidationWarning('Notice', 'Direct warning output', null);
assert.strictEqual(capturedWarnings.length, 1, 'Should log direct warning');
assert.ok(capturedWarnings[0].includes('Notice:\n\nDirect warning output\n'), 'Direct warning without comment should format properly');
console.log('Contract tests passed successfully.');
} finally {
console.warn = originalWarn;
}
Origin Seeder
anonymous