@eslint/config-helpers 0.4.2: globalIgnores

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 @eslint/config-helpers.globalIgnores in pkg:npm/%40eslint/config-helpers@0.4.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40eslint/config-helpers@0.4.2
Demonstrate these symbols/APIs:
  - @eslint/config-helpers.globalIgnores

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:ec50ee384b4d7e0e6163272b743b68e303ba2ae6fe19b93b1443f857333e4508","contract":["globalIgnores returns config object containing patterns array and auto-incremented name","globalIgnores sets custom name when name argument is provided","globalIgnores creates global ignore config with ignores property and no files property","globalIgnores throws TypeError when pattern argument is not an array","globalIgnores throws TypeError when pattern array is empty"],"goal":"verify @eslint/config-helpers.globalIgnores in pkg:npm/%40eslint/config-helpers@0.4.2","kind":"HOW","packages":["pkg:npm/%40eslint/config-helpers@0.4.2"],"schemaVersion":1,"symbols":["@eslint/config-helpers.globalIgnores"]},"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/%40eslint/config-helpers@0.4.2"],"schemaVersion":1,"subject":"pkg:npm/%40eslint/config-helpers@0.4.2","symbols":["@eslint/config-helpers.globalIgnores"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-eslint-config-helpers-global-ignores",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-eslint-config-helpers-global-ignores",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "@eslint/config-helpers": "0.4.2"
      }
    },
    "node_modules/@eslint/config-helpers": {
      "version": "0.4.2",
      "resolved": "https://registry.npmjs.org/@eslint/config-helpers/-/config-helpers-0.4.2.tgz",
      "integrity": "sha512-gBrxN88gOIf3R7ja5K9slwNayVcZgK6SOUORm2uBzTeIEfeVaIhOpCtTox3P6R7o2jLFwLFTLnC7kU/RGcYEgw==",
      "license": "Apache-2.0",
      "dependencies": {
        "@eslint/core": "^0.17.0"
      },
      "engines": {
        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
      }
    },
    "node_modules/@eslint/core": {
      "version": "0.17.0",
      "resolved": "https://registry.npmjs.org/@eslint/core/-/core-0.17.0.tgz",
      "integrity": "sha512-yL/sLrpmtDaFEiUj1osRP4TI2MDz1AddJL+jZ7KSqvBuliN4xqYY54IfdN8qD8Toa6g1iloph1fxQNkjOxrrpQ==",
      "license": "Apache-2.0",
      "dependencies": {
        "@types/json-schema": "^7.0.15"
      },
      "engines": {
        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
      }
    },
    "node_modules/@types/json-schema": {
      "version": "7.0.15",
      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
      "integrity": "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==",
      "license": "MIT"
    }
  }
}

{
  "name": "sample-eslint-config-helpers-global-ignores",
  "version": "1.0.0",
  "private": true,
  "license": "MIT-0",
  "dependencies": {
    "@eslint/config-helpers": "0.4.2"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify @eslint/config-helpers.globalIgnores in pkg:npm/%40eslint/config-helpers@0.4.2",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40eslint/config-helpers@0.4.2"
  ],
  "symbols": [
    "@eslint/config-helpers.globalIgnores"
  ]
}

import assert from "node:assert/strict";
import { globalIgnores } from "@eslint/config-helpers";

// 1. globalIgnores returns config object containing patterns array and auto-incremented name
const config1 = globalIgnores(["dist/**", "build/**"]);
assert.deepEqual(config1.ignores, ["dist/**", "build/**"]);
assert.match(config1.name, /^globalIgnores \d+$/);

// 2. globalIgnores sets custom name when name argument is provided
const config2 = globalIgnores(["temp/**", "*.log"], "custom-ignores");
assert.deepEqual(config2.ignores, ["temp/**", "*.log"]);
assert.equal(config2.name, "custom-ignores");

// 3. globalIgnores creates global ignore config with ignores property and no files property
assert.equal("files" in config1, false);
assert.equal("files" in config2, false);
assert.deepEqual(Object.keys(config2).sort(), ["ignores", "name"]);

// 4. globalIgnores throws TypeError when pattern argument is not an array
assert.throws(() => globalIgnores("not-an-array"), {
  name: "TypeError",
  message: "ignorePatterns must be an array"
});
assert.throws(() => globalIgnores(null), {
  name: "TypeError",
  message: "ignorePatterns must be an array"
});
assert.throws(() => globalIgnores(undefined), {
  name: "TypeError",
  message: "ignorePatterns must be an array"
});

// 5. globalIgnores throws TypeError when pattern array is empty
assert.throws(() => globalIgnores([]), {
  name: "TypeError",
  message: "ignorePatterns must contain at least one pattern"
});