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wasm-bindgen/guide/src/reference/attributes/on-js-imports/module.md
Alex Crichton 0d592fffb0 Add a raw_module attribute to #[wasm_bindgen] 
This allows subverting the checks and resolution performed by the
`module` attribute added as part of [RFC 6] and has been discussed in #1343.

Closes #1343

[RFC 6]: https://github.com/rustwasm/rfcs/pull/6
2019-03-15 08:08:09 -07:00

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module = "blah"

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

#[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,

#[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 the raw_module attribute