is-glob 4.0.3

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/is-glob@4.0.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/is-glob@4.0.3

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.

{"case":{"caseId":"case:sha256:ad6d32bcf2c58915876a5adfab02c9f68aa29322c54bc97a11750e38a2892742","contract":["isGlob returns true for wildcard patterns containing * and **","isGlob returns true for character sets and brace expansion patterns","isGlob returns true for extended glob patterns with prefix operators","isGlob returns false for plain literal paths and non-glob strings","isGlob with strict false detects lone glob characters in unclosed brackets, braces or question marks","isGlob returns false for invalid non-string inputs and empty strings"],"goal":"verify pkg:npm/is-glob@4.0.3","kind":"HOW","packages":["pkg:npm/is-glob@4.0.3"],"schemaVersion":1},"contractCommand":["node","test/contract.cjs"],"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/is-glob@4.0.3"],"schemaVersion":1,"subject":"pkg:npm/is-glob@4.0.3","verifierAdapter":"node-typescript@1"}

{
  "name": "is-glob-sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "is-glob-sample",
      "version": "1.0.0",
      "dependencies": {
        "is-glob": "4.0.3"
      }
    },
    "node_modules/is-extglob": {
      "version": "2.1.1",
      "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
      "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==",
      "license": "MIT",
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/is-glob": {
      "version": "4.0.3",
      "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
      "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
      "license": "MIT",
      "dependencies": {
        "is-extglob": "^2.1.1"
      },
      "engines": {
        "node": ">=0.10.0"
      }
    }
  }
}

{
  "name": "is-glob-sample",
  "version": "1.0.0",
  "description": "Minimal sample verifying is-glob",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.cjs"
  },
  "dependencies": {
    "is-glob": "4.0.3"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/is-glob@4.0.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/is-glob@4.0.3"
  ]
}

const isGlob = require('is-glob');

/**
 * Checks whether the given pattern string is a glob pattern.
 *
 * @param {any} pattern - Input value to test.
 * @param {object} [options] - Optional options passed to is-glob.
 * @returns {boolean} - True if pattern is a glob pattern, false otherwise.
 */
function checkIsGlob(pattern, options) {
  return isGlob(pattern, options);
}

/**
 * Filters an array of string paths to only include glob patterns.
 *
 * @param {string[]} patterns - Array of patterns to filter.
 * @param {object} [options] - Options passed to is-glob.
 * @returns {string[]} - Filtered array of glob patterns.
 */
function filterGlobPatterns(patterns, options) {
  if (!Array.isArray(patterns)) {
    return [];
  }
  return patterns.filter((p) => isGlob(p, options));
}

/**
 * Checks whether the given string is a valid glob pattern in strict mode.
 *
 * @param {string} pattern - Input string.
 * @returns {boolean} - True if valid glob in strict mode.
 */
function isStrictGlob(pattern) {
  return isGlob(pattern, { strict: true });
}

/**
 * Checks whether the given string contains glob characters in relaxed mode.
 *
 * @param {string} pattern - Input string.
 * @returns {boolean} - True if contains glob characters.
 */
function isLooseGlob(pattern) {
  return isGlob(pattern, { strict: false });
}

module.exports = {
  checkIsGlob,
  filterGlobPatterns,
  isStrictGlob,
  isLooseGlob,
  isGlob,
};

const assert = require('node:assert/strict');
const isGlob = require('is-glob');
const {
  checkIsGlob,
  filterGlobPatterns,
  isStrictGlob,
  isLooseGlob,
} = require('../src/index.js');

async function main() {
  // Contract 1: isGlob returns true for wildcard patterns containing * and **
  {
    assert.strictEqual(isGlob('*.js'), true);
    assert.strictEqual(isGlob('src/**/*.ts'), true);
    assert.strictEqual(isGlob('!test.js'), true);
    assert.strictEqual(checkIsGlob('*.js'), true);
    assert.strictEqual(checkIsGlob('src/**/*.ts'), true);
  }

  // Contract 2: isGlob returns true for character sets and brace expansion patterns
  {
    assert.strictEqual(isGlob('file[0-9].txt'), true);
    assert.strictEqual(isGlob('file[abc].js'), true);
    assert.strictEqual(isGlob('src/{components,utils}/*.js'), true);
    assert.strictEqual(checkIsGlob('file[0-9].txt'), true);
    assert.strictEqual(checkIsGlob('src/{components,utils}/*.js'), true);
  }

  // Contract 3: isGlob returns true for extended glob patterns with prefix operators
  {
    assert.strictEqual(isGlob('src/@(foo|bar).js'), true);
    assert.strictEqual(isGlob('src/!(temp).js'), true);
    assert.strictEqual(isGlob('src/+(a|b).js'), true);
    assert.strictEqual(isGlob('src/*(a|b).js'), true);
    assert.strictEqual(isGlob('src/?(a|b).js'), true);
    assert.strictEqual(checkIsGlob('src/@(foo|bar).js'), true);
  }

  // Contract 4: isGlob returns false for plain literal paths and non-glob strings
  {
    assert.strictEqual(isGlob('index.js'), false);
    assert.strictEqual(isGlob('src/components/button.jsx'), false);
    assert.strictEqual(isGlob('a/b/c/d.txt'), false);
    assert.strictEqual(checkIsGlob('index.js'), false);
    assert.strictEqual(isStrictGlob('src/components/button.jsx'), false);

    const paths = ['index.js', '*.js', 'docs/readme.md', 'src/**/*.ts'];
    assert.deepStrictEqual(filterGlobPatterns(paths), ['*.js', 'src/**/*.ts']);
  }

  // Contract 5: isGlob with strict false detects lone glob characters in unclosed brackets, braces or question marks
  {
    assert.strictEqual(isGlob('abc[123', { strict: true }), false);
    assert.strictEqual(isGlob('abc[123', { strict: false }), true);
    assert.strictEqual(isGlob('abc{123', { strict: true }), false);
    assert.strictEqual(isGlob('abc{123', { strict: false }), true);
    assert.strictEqual(isGlob('file?.txt', { strict: true }), false);
    assert.strictEqual(isGlob('file?.txt', { strict: false }), true);
    assert.strictEqual(isLooseGlob('abc[123'), true);
    assert.strictEqual(isStrictGlob('abc[123'), false);
  }

  // Contract 6: isGlob returns false for invalid non-string inputs and empty strings
  {
    assert.strictEqual(isGlob(''), false);
    assert.strictEqual(isGlob(null), false);
    assert.strictEqual(isGlob(undefined), false);
    assert.strictEqual(isGlob(123), false);
    assert.strictEqual(isGlob({}), false);
    assert.strictEqual(isGlob([]), false);
    assert.strictEqual(checkIsGlob(''), false);
    assert.strictEqual(checkIsGlob(null), false);
  }

  console.log('All contracts verified successfully.');
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});