tinyrainbow 3.1.1

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/tinyrainbow@3.1.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/tinyrainbow@3.1.1
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.

{"case":{"caseId":"case:sha256:3073d2d71c4054cbd4df8a0d4b055a337a284b9e343a91d54e113c1abdbf922c","constraints":{"executionContext":"node"},"contract":["createColors with force true wraps text in ANSI escape codes and provides open and close formatting properties","getDefaultColors returns unformatted identity functions with isColorSupported false and empty delimiters","nested color formatting replaces inner closing codes and restores outer color code","disableDefaultColors and enabledDefaultColors toggle color formatting on the default colors export","isSupported returns a boolean indicating terminal color support"],"goal":"verify pkg:npm/tinyrainbow@3.1.1","kind":"HOW","packages":["pkg:npm/tinyrainbow@3.1.1"],"schemaVersion":1},"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/tinyrainbow@3.1.1"],"schemaVersion":1,"subject":"pkg:npm/tinyrainbow@3.1.1","verifierAdapter":"node-typescript@1"}

{
  "name": "verify-tinyrainbow",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "verify-tinyrainbow",
      "version": "1.0.0",
      "dependencies": {
        "tinyrainbow": "3.1.1"
      }
    },
    "node_modules/tinyrainbow": {
      "version": "3.1.1",
      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-3.1.1.tgz",
      "integrity": "sha512-yau8yJdTt989Mm0Bd/236QnzEiPf2xLLTqUZRUJOo/3CB078LSwzei343DgtJVmfJKJE3TMINY1u42SQsP6mXw==",
      "license": "MIT",
      "engines": {
        "node": ">=14.0.0"
      }
    }
  }
}

{
  "name": "verify-tinyrainbow",
  "version": "1.0.0",
  "private": true,
  "type": "commonjs",
  "dependencies": {
    "tinyrainbow": "3.1.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/tinyrainbow@3.1.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/tinyrainbow@3.1.1"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

import assert from 'node:assert/strict';
import colors, {
  createColors,
  getDefaultColors,
  isSupported,
  disableDefaultColors,
  enabledDefaultColors,
} from 'tinyrainbow';

// 1. createColors with force: true enables ANSI formatting and sets open/close delimiters
{
  const c = createColors({ force: true });
  assert.equal(c.isColorSupported, true);
  assert.equal(c.red('hello'), '\x1B[31mhello\x1B[39m');
  assert.equal(c.green('world'), '\x1B[32mworld\x1B[39m');
  assert.equal(c.bold('text'), '\x1B[1mtext\x1B[22m');
  assert.equal(c.red.open, '\x1B[31m');
  assert.equal(c.red.close, '\x1B[39m');
}

// 2. getDefaultColors returns unformatted identity functions with isColorSupported false and empty delimiters
{
  const def = getDefaultColors();
  assert.equal(def.isColorSupported, false);
  assert.equal(def.red('hello'), 'hello');
  assert.equal(def.green('world'), 'world');
  assert.equal(def.blue('sample'), 'sample');
  assert.equal(def.reset('raw'), 'raw');
  assert.equal(def.red.open, '');
  assert.equal(def.red.close, '');
}

// 3. Nested formatting correctly handles inner closing codes and restores outer color
{
  const c = createColors({ force: true });
  const nested = c.red(`a ${c.green('b')} c`);
  assert.equal(nested, '\x1B[31ma \x1B[32mb\x1B[31m c\x1B[39m');

  const boldNested = c.bold(`a ${c.dim('b')} c`);
  assert.equal(boldNested, '\x1B[1ma \x1B[2mb\x1B[22m\x1B[1m c\x1B[22m');
}

// 4. disableDefaultColors and enabledDefaultColors toggle default colors export
{
  enabledDefaultColors();
  assert.equal(colors.isColorSupported, true);
  assert.equal(colors.yellow('warn'), '\x1B[33mwarn\x1B[39m');

  disableDefaultColors();
  assert.equal(colors.isColorSupported, false);
  assert.equal(colors.yellow('warn'), 'warn');

  enabledDefaultColors();
  assert.equal(colors.isColorSupported, true);
  assert.equal(colors.yellow('warn'), '\x1B[33mwarn\x1B[39m');
}

// 5. isSupported returns a boolean indicating color support
{
  const supported = isSupported();
  assert.equal(typeof supported, 'boolean');
}

console.log('Contract passed');