Method cast

crates/wasm/src/js_module.rs:434–442

(obj: PyObjectRef, vm: &VirtualMachine)

        }

        fn cast(obj: PyObjectRef, vm: &VirtualMachine) -> PyResult<Self> {
            let then = vm.get_attribute_opt(obj.clone(), "then")?;
            let value = if let Some(then) = then.filter(|obj| obj.is_callable()) {
                PromiseKind::PyProm { then }
            } else {
                PromiseKind::PyResolved(obj)
            };
            Ok(Self { value })
        }

        fn cast_result(res: PyResult, vm: &VirtualMachine) -> PyResult<Self> {
            match res {