kleur 4.1.5: bgGreen

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 kleur.bgGreen in pkg:npm/kleur@4.1.5
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/kleur@4.1.5
Demonstrate these symbols/APIs:
  - kleur.bgGreen

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:c9978dd71308004585136282f83a9590ab1f45c81b1658457f2818d51683528b","contract":["kleur.bgGreen wraps a string in ANSI background green escape codes \\u001b[42m and \\u001b[49m","kleur.bgGreen returns a chainable formatter when called with no arguments","kleur.bgGreen coerces numeric and non-string inputs into styled strings","kleur.bgGreen handles empty strings by wrapping them in open and close ANSI codes","setting kleur.enabled to false disables styling and returns the input as plain text"],"goal":"verify kleur.bgGreen in pkg:npm/kleur@4.1.5","kind":"HOW","packages":["pkg:npm/kleur@4.1.5"],"schemaVersion":1,"symbols":["kleur.bgGreen"]},"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/kleur@4.1.5"],"schemaVersion":1,"subject":"pkg:npm/kleur@4.1.5","symbols":["kleur.bgGreen"],"verifierAdapter":"node-typescript@1"}

import kleur from 'kleur';

/**
 * Formats text with green background ANSI styling.
 * @param {string|number|boolean} text
 * @returns {string}
 */
export function formatSuccessBadge(text) {
  return kleur.bgGreen().white().bold(` ${text} `);
}

/**
 * Applies green background directly using kleur.bgGreen.
 * @param {string|number|boolean} text
 * @returns {string}
 */
export function applyBgGreen(text) {
  return kleur.bgGreen(text);
}

export { kleur };

{
  "name": "verify-kleur-bggreen",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "verify-kleur-bggreen",
      "version": "1.0.0",
      "dependencies": {
        "kleur": "4.1.5"
      }
    },
    "node_modules/kleur": {
      "version": "4.1.5",
      "resolved": "https://registry.npmjs.org/kleur/-/kleur-4.1.5.tgz",
      "integrity": "sha512-o+NO+8WrRiQEE4/7nwRJhN1HWpVmJm511pBHUxPLtp0BUISzlBplORYSmTclCnJvQq2tKu/sgl3xVpkc7ZWuQQ==",
      "license": "MIT",
      "engines": {
        "node": ">=6"
      }
    }
  }
}

{
  "name": "verify-kleur-bggreen",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification sample for kleur.bgGreen in kleur@4.1.5",
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "kleur": "4.1.5"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify kleur.bgGreen in pkg:npm/kleur@4.1.5",
  "kind": "HOW",
  "packages": [
    "pkg:npm/kleur@4.1.5"
  ],
  "symbols": [
    "kleur.bgGreen"
  ]
}

import assert from 'node:assert/strict';
import { kleur, applyBgGreen, formatSuccessBadge } from '../index.js';

// Ensure predictable styling behavior in non-interactive / CI environments
kleur.enabled = true;

// Contract 1: kleur.bgGreen wraps a string in ANSI background green escape codes (\u001b[42m and \u001b[49m).
const basic = kleur.bgGreen('SUCCESS');
assert.equal(basic, '\u001b[42mSUCCESS\u001b[49m');
assert.equal(applyBgGreen('PASS'), '\u001b[42mPASS\u001b[49m');

// Contract 2: kleur.bgGreen returns a chainable formatter when called with no arguments.
const chained = kleur.bgGreen().bold('HIGHLIGHT');
assert.equal(chained, '\u001b[42m\u001b[1mHIGHLIGHT\u001b[49m\u001b[22m');

const badge = formatSuccessBadge('OK');
assert.equal(badge, '\u001b[42m\u001b[37m\u001b[1m OK \u001b[49m\u001b[39m\u001b[22m');

// Contract 3: kleur.bgGreen coerces numeric and non-string inputs into styled strings.
const num = kleur.bgGreen(200);
assert.equal(num, '\u001b[42m200\u001b[49m');

// Contract 4: kleur.bgGreen handles empty strings by wrapping them in open and close ANSI codes.
const empty = kleur.bgGreen('');
assert.equal(empty, '\u001b[42m\u001b[49m');

// Contract 5: setting kleur.enabled to false disables styling and returns the input as plain text.
kleur.enabled = false;
assert.equal(kleur.bgGreen('NO_COLOR'), 'NO_COLOR');
assert.equal(applyBgGreen('PLAIN'), 'PLAIN');
assert.equal(formatSuccessBadge('DISABLED'), ' DISABLED ');

// Restore enabled state
kleur.enabled = true;

console.log('All kleur.bgGreen contract tests passed.');