CodeSampleX

Exemplo

@npmcli/config 9.0.0

Amostra verificada para npm @npmcli/config 9.0.0. O contrato rodou em node 22 · linux debian/x64 · docker e passou: Calling config.get() before await…

sha256:7a848581a968b865c0b259867bd9c81b7c5c2d51d202bb6180775bc6dd675176

Esta rede oferece uma coisa: uma amostra que compila. Ela a executou em um sandbox e guardou o recibo assinado. Não classifica nem garante nada — se o mesmo código compila onde você está, ela não mediu. Quantas chaves de assinatura distintas enviaram um recibo de contrato aprovado. Uma é só o autor; mais de uma significa que outra pessoa também o compilou. Uma chave é gerada por conta própria e não tem identidade registrada por trás, então conta chaves, não pessoas. MIT-0

Evidência de execução

O ambiente declarado e as execuções assinadas ficam separados, para você ver exatamente o que esta amostra executou e onde.

Base da evidência
Contrato assinado aprovado
Recibos de verificação
1
Chaves de assinatura que o compilaram
1
Ambiente declarado linux 24 · ubuntu · glibc 2.39 x64 npm

Ambientes das execuções de verificação

Ambiente Contrato Etapas Execução
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-10-21

Caso

HOW
Objetivo
verify pkg:npm/%40npmcli/config@9.0.0
Pacotes
Criado
2026-10-21T01:54:20Z

Contrato

  1. Calling config.get() before await config.load() throws Error('call config.load() before reading values').
  2. After await config.load(), config.loaded is true and CLI shorthands (-s -> loglevel='silent'), CLI flags (--save-exact -> true), and npm_config_* environment variables (npm_config_tag -> tag='next') resolve according to layer precedence (cli > env > default).
  3. config.find(key) returns the active layer name ('cli', 'env', or 'default') and config.isDefault(key) returns true only when no higher-priority layer overrides the default definition.
  4. config.set('tag', 'beta', 'cli') overrides the env layer, invalidates cached config.flat so config.flat.defaultTag becomes 'beta', and config.delete('tag', 'cli') restores fallback to the env layer.

Arquivos

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Baixar o artefato de código-fonte (tar.gz)

Código-fonte

PROMPT.md
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/%40npmcli/config@9.0.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40npmcli/config@9.0.0

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.
csx.json
{"case":{"caseId":"case:sha256:f0d04b325318d24c7f8adf1b04eba089f6589473697869d09f6a29be7b66c6d2","contract":["Calling config.get() before await config.load() throws Error('call config.load() before reading values').","After await config.load(), config.loaded is true and CLI shorthands (-s -\u003e loglevel='silent'), CLI flags (--save-exact -\u003e true), and npm_config_* environment variables (npm_config_tag -\u003e tag='next') resolve according to layer precedence (cli \u003e env \u003e default).","config.find(key) returns the active layer name ('cli', 'env', or 'default') and config.isDefault(key) returns true only when no higher-priority layer overrides the default definition.","config.set('tag', 'beta', 'cli') overrides the env layer, invalidates cached config.flat so config.flat.defaultTag becomes 'beta', and config.delete('tag', 'cli') restores fallback to the env layer."],"goal":"verify pkg:npm/%40npmcli/config@9.0.0","kind":"HOW","packages":["pkg:npm/%40npmcli/config@9.0.0"],"schemaVersion":1},"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/config@9.0.0"],"schemaVersion":1,"subject":"pkg:npm/%40npmcli/config@9.0.0","verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
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        "wrap-ansi": "^8.1.0",
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      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
      "license": "MIT",
      "dependencies": {
        "emoji-regex": "^8.0.0",
        "is-fullwidth-code-point": "^3.0.0",
        "strip-ansi": "^6.0.1"
      },
      "engines": {
        "node": ">=8"
      }
    },
    "node_modules/wrap-ansi-cjs/node_modules/strip-ansi": {
      "version": "6.0.1",
      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
      "license": "MIT",
      "dependencies": {
        "ansi-regex": "^5.0.1"
      },
      "engines": {
        "node": ">=8"
      }
    }
  }
}
package.json
{
  "name": "sample",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@npmcli/config": "9.0.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40npmcli/config@9.0.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40npmcli/config@9.0.0"
  ]
}
src/index.mjs
import Config from '@npmcli/config'
import definitionsModule from '@npmcli/config/lib/definitions/index.js'

const { definitions, shorthands, flatten } = definitionsModule

export async function createLoadedConfig({
  npmPath = process.cwd(),
  cwd = process.cwd(),
  argv = ['node', 'npm'],
  env = {},
} = {}) {
  const config = new Config({
    npmPath,
    definitions,
    shorthands,
    flatten,
    argv,
    env,
    cwd,
    excludeNpmCwd: true,
  })
  await config.load()
  return config
}

export { Config, definitions, shorthands, flatten }
test/contract.mjs
import assert from 'node:assert/strict'
import { mkdtempSync, rmSync } from 'node:fs'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { Config, createLoadedConfig, definitions, shorthands, flatten } from '../src/index.mjs'

const tempDir = mkdtempSync(join(tmpdir(), 'npmcli-config-'))

try {
  // 1. Reading before load() throws an error
  const unloaded = new Config({
    npmPath: tempDir,
    definitions,
    shorthands,
    flatten,
    argv: ['node', 'npm'],
    env: { HOME: tempDir },
    cwd: tempDir,
  })
  assert.equal(unloaded.loaded, false)
  assert.throws(
    () => unloaded.get('tag'),
    /call config\.load\(\) before reading values/
  )

  // 2. Load configuration with CLI shorthand/flags and environment variables
  const config = await createLoadedConfig({
    npmPath: tempDir,
    cwd: tempDir,
    argv: ['node', 'npm', '-s', '--save-exact'],
    env: {
      HOME: tempDir,
      npm_config_tag: 'next',
    },
  })

  assert.equal(config.loaded, true)

  // CLI shorthand -s maps to --loglevel silent
  assert.equal(config.get('loglevel'), 'silent')
  assert.equal(config.find('loglevel'), 'cli')
  assert.equal(config.isDefault('loglevel'), false)

  // CLI boolean flag --save-exact
  assert.equal(config.get('save-exact'), true)
  assert.equal(config.find('save-exact'), 'cli')

  // Environment variable npm_config_tag maps to 'tag' in 'env' layer
  assert.equal(config.get('tag'), 'next')
  assert.equal(config.get('tag', 'env'), 'next')
  assert.equal(config.get('tag', 'default'), 'latest')
  assert.equal(config.find('tag'), 'env')
  assert.equal(config.isDefault('tag'), false)

  // Default layer value remains untouched for unset options
  assert.equal(config.isDefault('init-version'), true)
  assert.equal(config.get('init-version'), '1.0.0')
  assert.equal(config.find('init-version'), 'default')

  // 3. Mutating via set() and delete(), and inspecting flattened options
  config.set('tag', 'beta', 'cli')
  assert.equal(config.get('tag'), 'beta')
  assert.equal(config.find('tag'), 'cli')
  assert.equal(config.flat.defaultTag, 'beta')
  assert.equal(config.flat.savePrefix, '')

  config.delete('tag', 'cli')
  assert.equal(config.get('tag'), 'next')
  assert.equal(config.find('tag'), 'env')

  // 4. Validating configuration state
  assert.equal(config.validate(), true)
  assert.equal(config.valid, true)
} finally {
  rmSync(tempDir, { recursive: true, force: true })
}

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