wasmerio/wasmer · error

{error_message}

Error message

{error_message}

What it means

Error "{error_message}" thrown in wasmerio/wasmer.

Source

Thrown at lib/api/src/backend/js/utils/js_handle.rs:174

                if let Some(bt) = backtrace {
                    writeln!(error_message, "{bt}").unwrap();
                    writeln!(error_message).unwrap();
                }

                let caller = Location::caller();

                writeln!(
                    error_message,
                    "Accessed from {caller} on thread #{current_thread}"
                )
                .unwrap();

                if let Some(bt) = record_backtrace() {
                    writeln!(error_message, "{bt}").unwrap();
                    writeln!(error_message).unwrap();
                }

                panic!("{error_message}");
            }
        }
    }

    fn record_backtrace() -> Option<String> {
        let err = js_sys::Error::new("");
        let stack = JsString::from(wasm_bindgen::intern("stack"));

        js_sys::Reflect::get(&err, &stack)
            .ok()
            .and_then(|v| v.as_string())
    }
}

/// A browser polyfill for [`std::thread::ThreadId`] [`std::thread::current()`].
///
/// This works by creating a `$WASMER_THREAD_ID` symbol and setting it on
/// the global object. As long as they use the same `SharedArrayBuffer` for

View on GitHub (pinned to 8c4b9ee9d3)

When it happens

Trigger: Thrown at lib/api/src/backend/js/utils/js_handle.rs:174 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of wasmerio/wasmer@8c4b9ee9d3 (2026-09-01). Data as JSON: /api/errors/1aac955b5ef64430. Report an issue: GitHub.