Function cachePlugin

src/utils/plugins/pluginLoader.ts:912–1099

(
  source: PluginSource,
  options?: {
    manifest?: PluginManifest
  },
)

 * Cache a plugin from an external source
 */
export async function cachePlugin(
  source: PluginSource,
  options?: {
    manifest?: PluginManifest
  },
): Promise<{ path: string; manifest: PluginManifest; gitCommitSha?: string }> {
  const cachePath = getPluginCachePath()

  await getFsImplementation().mkdir(cachePath)

  const tempName = generateTemporaryCacheNameForPlugin(source)
  const tempPath = join(cachePath, tempName)

  let shouldCleanup = false
  let gitCommitSha: string | undefined

  try {
    logForDebugging(
      `Caching plugin from source: ${jsonStringify(source)} to temporary path ${tempPath}`,
    )

    shouldCleanup = true

    if (typeof source === 'string') {
      await installFromLocal(source, tempPath)
    } else {
      switch (source.source) {
        case 'npm':
          await installFromNpm(source.package, tempPath, {
            registry: source.registry,
            version: source.version,
          })
          break
        case 'github':
          await installFromGitHub(source.repo, tempPath, source.ref, source.sha)
          break
        case 'url':
          await installFromGit(source.url, tempPath, source.ref, source.sha)
          break
        case 'git-subdir':
          gitCommitSha = await installFromGitSubdir(
            source.url,
            tempPath,
            source.path,
            source.ref,
            source.sha,
          )
          break
        case 'pip':
          throw new Error('Python package plugins are not yet supported')
        default:
          throw new Error(`Unsupported plugin source type`)
      }
    }
  } catch (error) {
    if (shouldCleanup && (await pathExists(tempPath))) {
      logForDebugging(`Cleaning up failed installation at ${tempPath}`)
      try {