denoland/deno · error

LAUFEY backend binary has no parent directory: {}

Error message

LAUFEY backend binary has no parent directory: {}

What it means

Error "LAUFEY backend binary has no parent directory: {}" thrown in denoland/deno.

Source

Thrown at cli/tools/desktop.rs:2130

    let dir = self.ensure_downloaded(backend, target).await?;
    locate_app_bundle(&dir, backend).ok_or_else(|| {
      deno_core::anyhow::anyhow!(
        "could not find '{backend}' .app bundle inside {} (backend may not ship as an app for target '{target}')",
        dir.display()
      )
    })
  }

  /// Directory containing the backend binary and its support files (used on
  /// Windows / Linux where support files sit alongside the binary).
  async fn find_binary_dir(
    &self,
    backend: &str,
    target: &str,
  ) -> Result<PathBuf, AnyError> {
    let binary = self.find_binary(backend, target).await?;
    let parent = binary.parent().ok_or_else(|| {
      deno_core::anyhow::anyhow!(
        "LAUFEY backend binary has no parent directory: {}",
        binary.display()
      )
    })?;
    Ok(parent.to_path_buf())
  }
}

fn laufey_archive_name(backend: &str, target: &str) -> String {
  let ext = if target.contains("windows") {
    "zip"
  } else {
    "tar.gz"
  };
  // The `raw` backend ships under the `winit` archive name upstream.
  let archive_backend = match backend {
    "raw" => "winit",
    other => other,

View on GitHub (pinned to 89f33cbef2)

When it happens

Trigger: Thrown at cli/tools/desktop.rs:2130 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of denoland/deno@89f33cbef2 (2026-08-16). Data as JSON: /api/errors/27521551ef113db6. Report an issue: GitHub.