@npmcli/redact 3.2.2: redact

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 @npmcli/redact.redact in pkg:npm/%40npmcli/redact@3.2.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40npmcli/redact@3.2.2
Demonstrate these symbols/APIs:
  - @npmcli/redact.redact

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:sha256:0eeb7a438b862225abb5305e92f596a79fde00db58c32194c47cc1411d598b60","contract":["redact replaces UUID substrings in strings with '***'","redact replaces 36-to-48 character npm_ secret substrings with 'npm_***'","redact returns non-matching strings, empty strings, and non-string values unchanged"],"goal":"verify @npmcli/redact.redact in pkg:npm/%40npmcli/redact@3.2.2","kind":"HOW","packages":["pkg:npm/%40npmcli/redact@3.2.2"],"schemaVersion":1,"symbols":["@npmcli/redact.redact"]},"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/%40npmcli/redact@3.2.2"],"schemaVersion":1,"subject":"pkg:npm/%40npmcli/redact@3.2.2","symbols":["@npmcli/redact.redact"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-npmcli-redact",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-npmcli-redact",
      "version": "1.0.0",
      "dependencies": {
        "@npmcli/redact": "3.2.2"
      }
    },
    "node_modules/@npmcli/redact": {
      "version": "3.2.2",
      "resolved": "https://registry.npmjs.org/@npmcli/redact/-/redact-3.2.2.tgz",
      "integrity": "sha512-7VmYAmk4csGv08QzrDKScdzn11jHPFGyqJW39FyPgPuAp3zIaUmuCo1yxw9aGs+NEJuTGQ9Gwqpt93vtJubucg==",
      "license": "ISC",
      "engines": {
        "node": "^18.17.0 || >=20.5.0"
      }
    }
  }
}

{
  "name": "sample-npmcli-redact",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@npmcli/redact": "3.2.2"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify @npmcli/redact.redact in pkg:npm/%40npmcli/redact@3.2.2",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40npmcli/redact@3.2.2"
  ],
  "symbols": [
    "@npmcli/redact.redact"
  ]
}

import assert from 'node:assert/strict';
import { redact } from '@npmcli/redact';

const uuidInput = 'id=00000000-0000-0000-0000-000000000000';
assert.equal(redact(uuidInput), 'id=***');

const syntheticPrefix = ['n', 'p', 'm', '_'].join('') + '0'.repeat(36);
assert.equal(redact(syntheticPrefix), 'npm_***');

assert.equal(redact('plain-value'), 'plain-value');
assert.equal(redact(''), '');
assert.equal(redact(null), null);