js_namespace = "chrome.tabs" error expected an identifier

[ctaggart]

I'm trying to map functions from the chrome.tabs JavaScript namespace, but when I do:

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = "chrome.tabs")]
    pub fn query(query_info: &JsValue, callback: &dyn Fn(JsValue));
}

I get the error:

error: expected an identifier
  --> src/chrome_tabs.rs:23:35
   |
23 |     #[wasm_bindgen(js_namespace = "chrome.tabs")]
   |                                   ^^^^^^^^^^^^^

May be related code:

wasm-bindgen/crates/backend/src/ast.rs

Line 72 in df34cf8

pub js_namespace: Option<Ident>,

[Pauan]

Yeah, this is covered by #951

As a workaround, you can do this:

#[wasm_bindgen]
extern "C" {
    pub type Tabs;

    #[wasm_bindgen(method)]
    pub fn query(this: &Tabs, query_info: &JsValue, callback: &dyn Fn(JsValue));
}

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = chrome)]
    pub fn tabs() -> Tabs;
}

Now you can use tabs().query(...)

[ctaggart]

That gave Uncaught TypeError: chrome.tabs is not a function

but with static like #951 worked:

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = chrome)]
    static tabs: Tabs;
}

Thanks again!

[Pauan]

Oops, I forgot to add getter, though static works as well.