module = "blah" - The wasm-bindgen Guide (original) (raw)

The `wasm-bindgen` Guide

module = "blah"

The module attributes configures the module from which items are imported. For example,

#![allow(unused)]
fn main() {
#[wasm_bindgen(module = "wu/tang/clan")]
extern "C" {
    type ThirtySixChambers;
}
}

generates JavaScript import glue like:

import { ThirtySixChambers } from "wu/tang/clan";

If a module attribute is not present, then the global scope is used instead. For example,

#![allow(unused)]
fn main() {
#[wasm_bindgen]
extern "C" {
    fn illmatic() -> u32;
}
}

generates JavaScript import glue like:

let illmatic = this.illmatic;

Note that if the string specified with module starts with ./, ../, or /then it's interpreted as a path to a local JS snippet. If this doesn't work for your use case you might be interested in theraw_module attribute