Function isBuiltinPluginId

src/plugins/builtinPlugins.ts:37–39

(pluginId: string)

 * Check if a plugin ID represents a built-in plugin (ends with @builtin).
 */
export function isBuiltinPluginId(pluginId: string): boolean {
  return pluginId.endsWith(`@${BUILTIN_MARKETPLACE_NAME}`)
}

/**
 * Get a specific built-in plugin definition by name.