linshenkx/prompt-optimizer · error · Error

Google Drive remote backup is only supported in the Web vers

Error message

Google Drive remote backup is only supported in the Web version

What it means

Factory createRemoteObjectStore routes desktop runtimes through the Electron IPC store, which has no Google Drive implementation; requesting google-drive on desktop throws explicitly.

Source

Thrown at packages/ui/src/utils/remote-backup.ts:1724

    }
  }
}

class CloudflareR2RemoteObjectStore extends S3CompatibleRemoteObjectStore {
  provider: RemoteBackupProviderKind = 'cloudflare-r2'

  constructor(config: Extract<RemoteBackupProviderConfig, { kind: 'cloudflare-r2' }>) {
    super(toCloudflareR2S3Config(config))
  }
}

export const createRemoteObjectStore = (
  provider: RemoteBackupProviderConfig,
  runtime: RemoteBackupRuntime = 'web',
): RemoteObjectStore => {
  if (runtime === 'desktop') {
    if (provider.kind === 'google-drive') {
      throw new Error('Google Drive remote backup is only supported in the Web version')
    }
    return new DesktopIpcRemoteObjectStore(provider)
  }
  if (provider.kind === 'google-drive') return new GoogleDriveRemoteObjectStore(provider)
  if (provider.kind === 'cloudflare-r2') return new CloudflareR2RemoteObjectStore(provider)
  if (provider.kind === 'webdav') return new WebDavRemoteObjectStore(provider)
  return new S3CompatibleRemoteObjectStore(provider)
}

export const createRemoteBackupAdapter = (
  provider: RemoteBackupProviderConfig,
  runtime: RemoteBackupRuntime = 'web',
): RemoteBackupAdapter => createRemoteObjectStore(provider, runtime) as RemoteBackupAdapter

export const remoteBackupBlobToImportBuffer = async (blob: Blob): Promise<ArrayBuffer> =>
  blob.arrayBuffer()

export const remoteBackupArrayBufferToText = (buffer: ArrayBuffer): string =>

View on GitHub (pinned to 3e677b1d9f)

Solutions

1. Use the web version for Google Drive backups
2. Choose an IPC-supported provider on desktop (webdav, cloudflare-r2/s3)
3. Hide/disable the Google Drive option in desktop UI before reaching the factory

Example fix

// before
const store = createRemoteObjectStore(cfg, runtime)
// after
if (runtime === 'desktop' && cfg.kind === 'google-drive') {
  throw new Error('unsupported in desktop build') // or disable the option in UI
}
const store = createRemoteObjectStore(cfg, runtime)

if (runtime === 'desktop' && provider.kind === 'google-drive') disableGoogleDriveOption()

const isProviderSupportedOnRuntime = (kind: RemoteBackupProviderKind, runtime: RemoteBackupRuntime): boolean => !(runtime === 'desktop' && kind === 'google-drive')

catch (e) { if ((e as Error).message.includes('only supported in the Web version')) showPlatformNotice(); else throw e }

When it happens

Trigger: Calling createRemoteObjectStore({kind:'google-drive',...}, 'desktop') — i.e. the desktop app flow with Google Drive selected as the backup provider.

Common situations: Desktop build where the Google Drive OAuth flow (browser-based) is not wired through IPC; users migrating settings from web to desktop with a Google Drive provider configured.

Understand the failure class

Background: UnsupportedOperationException and "is not supported" errors: when a library deliberately refuses a call — this error's family across 30 libraries.

Related errors

• ${context}: ${response.status} ${message || response.statusT
• ${context}: ${(error as Error).message || String(error)}
• Google Drive object not found: ${path}
• Google Drive resumable upload session did not return a locat
• Google Drive folder creation did not return an id

AI-assisted analysis of linshenkx/prompt-optimizer@3e677b1d9f (2026-08-27). Data as JSON: /api/errors/c01a6ed831aa3e3a. Report an issue: GitHub.