yoctocolors-cjs 2.1.3

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/yoctocolors-cjs@2.1.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/yoctocolors-cjs@2.1.3

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:dba3fb1d2c52b2b260a784478de753a495c9d39b810fc423ed4ee5870e2e6b6a","contract":["colors format text with standard ANSI color escape codes when color is enabled","colors format text with standard ANSI style modifier codes when color is enabled","bright colors and background colors format text with corresponding ANSI escape codes","nested color and style formatting properly preserves and reopens outer styling","non-string input is coerced to string when formatting","disabled color mode returns input unchanged without ANSI codes"],"goal":"verify pkg:npm/yoctocolors-cjs@2.1.3","kind":"HOW","packages":["pkg:npm/yoctocolors-cjs@2.1.3"],"schemaVersion":1},"contractCommand":["node","test/contract.cjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","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/yoctocolors-cjs@2.1.3"],"schemaVersion":1,"subject":"pkg:npm/yoctocolors-cjs@2.1.3","verifierAdapter":"node-typescript@1"}

'use strict';

const colors = require('yoctocolors-cjs');

function formatSuccess(message) {
  return colors.green(message);
}

function formatError(message) {
  return colors.red(message);
}

function formatHighlight(message) {
  return colors.bold(colors.cyan(message));
}

module.exports = {
  colors,
  formatSuccess,
  formatError,
  formatHighlight
};

{
  "name": "sample-yoctocolors-cjs",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-yoctocolors-cjs",
      "version": "1.0.0",
      "dependencies": {
        "yoctocolors-cjs": "2.1.3"
      }
    },
    "node_modules/yoctocolors-cjs": {
      "version": "2.1.3",
      "resolved": "https://registry.npmjs.org/yoctocolors-cjs/-/yoctocolors-cjs-2.1.3.tgz",
      "integrity": "sha512-U/PBtDf35ff0D8X8D0jfdzHYEPFxAI7jJlxZXwCSez5M3190m+QobIfh+sWDWSHMCWWJN2AWamkegn6vr6YBTw==",
      "license": "MIT",
      "engines": {
        "node": ">=18"
      },
      "funding": {
        "url": "https://github.com/sponsors/sindresorhus"
      }
    }
  }
}

{
  "name": "sample-yoctocolors-cjs",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of yoctocolors-cjs",
  "dependencies": {
    "yoctocolors-cjs": "2.1.3"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/yoctocolors-cjs@2.1.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/yoctocolors-cjs@2.1.3"
  ]
}

'use strict';

// Ensure color formatting is active for offline test execution
process.env.FORCE_COLOR = '1';

const assert = require('node:assert/strict');
const colors = require('yoctocolors-cjs');
const { formatSuccess, formatError, formatHighlight } = require('../index.cjs');

// 1. Basic text colors format with standard ANSI escape codes
assert.equal(colors.red('hello'), '\u001B[31mhello\u001B[39m');
assert.equal(colors.green('hello'), '\u001B[32mhello\u001B[39m');
assert.equal(colors.yellow('hello'), '\u001B[33mhello\u001B[39m');
assert.equal(colors.blue('hello'), '\u001B[34mhello\u001B[39m');
assert.equal(colors.magenta('hello'), '\u001B[35mhello\u001B[39m');
assert.equal(colors.cyan('hello'), '\u001B[36mhello\u001B[39m');
assert.equal(colors.white('hello'), '\u001B[37mhello\u001B[39m');
assert.equal(colors.gray('hello'), '\u001B[90mhello\u001B[39m');
assert.equal(colors.black('hello'), '\u001B[30mhello\u001B[39m');

// 2. Modifiers format with corresponding ANSI style codes
assert.equal(colors.bold('text'), '\u001B[1mtext\u001B[22m');
assert.equal(colors.dim('text'), '\u001B[2mtext\u001B[22m');
assert.equal(colors.italic('text'), '\u001B[3mtext\u001B[23m');
assert.equal(colors.underline('text'), '\u001B[4mtext\u001B[24m');
assert.equal(colors.overline('text'), '\u001B[53mtext\u001B[55m');
assert.equal(colors.inverse('text'), '\u001B[7mtext\u001B[27m');
assert.equal(colors.hidden('text'), '\u001B[8mtext\u001B[28m');
assert.equal(colors.strikethrough('text'), '\u001B[9mtext\u001B[29m');
assert.equal(colors.reset('text'), '\u001B[0mtext\u001B[0m');

// 3. Bright colors and background colors format properly
assert.equal(colors.redBright('bright'), '\u001B[91mbright\u001B[39m');
assert.equal(colors.greenBright('bright'), '\u001B[92mbright\u001B[39m');
assert.equal(colors.yellowBright('bright'), '\u001B[93mbright\u001B[39m');
assert.equal(colors.bgRed('bg'), '\u001B[41mbg\u001B[49m');
assert.equal(colors.bgGreen('bg'), '\u001B[42mbg\u001B[49m');
assert.equal(colors.bgBlue('bg'), '\u001B[44mbg\u001B[49m');
assert.equal(colors.bgCyanBright('bg'), '\u001B[106mbg\u001B[49m');

// 4. Nested styling and helper functions
assert.equal(colors.bold(colors.red('alert')), '\u001B[1m\u001B[31malert\u001B[39m\u001B[22m');
assert.equal(colors.dim('a ' + colors.bold('b') + ' c'), '\u001B[2ma \u001B[1mb\u001B[22m\u001B[2m c\u001B[22m');
assert.equal(formatSuccess('ok'), '\u001B[32mok\u001B[39m');
assert.equal(formatError('fail'), '\u001B[31mfail\u001B[39m');
assert.equal(formatHighlight('info'), '\u001B[1m\u001B[36minfo\u001B[39m\u001B[22m');

// 5. Non-string input is coerced to string
assert.equal(colors.blue(42), '\u001B[34m42\u001B[39m');
assert.equal(colors.green(true), '\u001B[32mtrue\u001B[39m');

// 6. Disabled color mode returns input unchanged
delete require.cache[require.resolve('yoctocolors-cjs')];
delete process.env.FORCE_COLOR;
process.env.NO_COLOR = '1';
const disabledColors = require('yoctocolors-cjs');
assert.equal(disabledColors.red('plain'), 'plain');
assert.equal(disabledColors.bold('plain'), 'plain');
assert.equal(disabledColors.bgBlue('plain'), 'plain');

console.log('Contract passed');