Function resolveNpmVersion

packages/create/src/npm-resolver.ts:11–28

(pkg: string)

const cache = new Map<string, string>()

export async function resolveNpmVersion(pkg: string): Promise<string | null> {
  if (cache.has(pkg)) {
    return cache.get(pkg)!
  }

  try {
    const res = await fetch(`https://registry.npmjs.org/${pkg}/latest`, {
      headers: { Accept: 'application/vnd.npm.install-v1+json' },
    })
    if (!res.ok) return null
    const data = (await res.json()) as { version?: string }
    const version = data.version ?? null
    if (version) cache.set(pkg, version)
    return version
  } catch {
    return null
  }
}

/**
 * Walk a deps object and resolve any "latest" values to pinned versions.