{
  "version": 3,
  "sources": ["../../../../src/packages/npm-resolver/parsePref.ts"],
  "sourcesContent": ["import parseNpmTarballUrl from 'parse-npm-tarball-url';\nimport getVersionSelectorType from 'version-selector-type';\n\nexport interface RegistryPackageSpec {\n  type: 'tag' | 'version' | 'range';\n  name: string;\n  fetchSpec: string;\n  normalizedPref?: string | undefined;\n}\n\nexport function parsePref(\n  pref: string,\n  alias: string | undefined,\n  defaultTag: string,\n  registry: string\n): RegistryPackageSpec | null {\n  let name = alias;\n\n  let newPref = pref;\n\n  if (pref.startsWith('npm:')) {\n    newPref = newPref.slice(4);\n\n    const index = newPref.lastIndexOf('@');\n\n    if (index < 1) {\n      name = newPref;\n      newPref = defaultTag;\n    } else {\n      name = newPref.slice(0, index);\n      newPref = newPref.slice(index + 1);\n    }\n  }\n\n  if (typeof name === 'string' && name !== '') {\n    const selector = getVersionSelectorType(newPref);\n\n    if (selector != null) {\n      return {\n        fetchSpec: selector.normalized,\n        name,\n        type: selector.type,\n      };\n    }\n  }\n\n  if (newPref.startsWith(registry)) {\n    const pkg = parseNpmTarballUrl.default(newPref);\n\n    if (pkg != null) {\n      return {\n        fetchSpec: pkg.version,\n        name: pkg.name,\n        normalizedPref: newPref,\n        type: 'version',\n      };\n    }\n  }\n  return null;\n}\n"],
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