astral-sh/ruff · error · Error

File does not exist

Error message

File does not exist

What it means

A wasm-bindgen Error from ty's updateFile binding: the target file does not exist on the wasm system's filesystem, so there is nothing to update. The existence check runs before any write is attempted.

Source

Thrown at crates/ty_wasm/src/lib.rs:221

        let file = system_path_to_file(&self.db, &path).expect("File to exist");

        self.db.project().open_file(&mut self.db, file);

        Ok(FileHandle {
            path: path.into(),
            file,
        })
    }

    #[wasm_bindgen(js_name = "updateFile")]
    pub fn update_file(&mut self, file_id: &FileHandle, contents: &str) -> Result<(), Error> {
        let system_path = file_id.path.as_system_path().ok_or_else(|| {
            Error::new("Cannot update non-system files (vendored files are read-only)")
        })?;

        if !self.system.fs.exists(system_path) {
            return Err(Error::new("File does not exist"));
        }

        self.system
            .fs
            .write_file(system_path, contents)
            .map_err(into_error)?;

        self.db.apply_changes(&[
            ChangeEvent::Changed {
                path: system_path.to_path_buf(),
                kind: ChangedKind::FileContent,
            },
            ChangeEvent::Changed {
                path: system_path.to_path_buf(),
                kind: ChangedKind::FileMetadata,
            },
        ]);

View on GitHub (pinned to 26f38c119c)

Solutions

1. Create the file first with the create/open API before updating
2. Check the file handle is still valid before calling updateFile

When it happens

Trigger: Thrown at crates/ty_wasm/src/lib.rs:221 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of astral-sh/ruff@26f38c119c (2026-09-05). Data as JSON: /api/errors/3ca781b42f04170e. Report an issue: GitHub.