Motivation

Right now you can use js_name to convert a Rust foo_bar into JS fooBar (or vice versa). But 99% of the time you want it to be camel case, so this just ends up being repetitive boilerplate:

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_name = fooBar)]
    fn foo_bar(...);

    #[wasm_bindgen(js_name = quxCorge)]
    fn qux_corge(...);

    #[wasm_bindgen(js_name = yesNo)]
    fn yes_no(...);
}

Proposed Solution

wasm-bindgen should automatically camelify JS names, so foo_bar will be translated into fooBar on import/export.

It will still be possible to use js_name to manually override that if the user does not want camel-case.

This is a breaking change, so we should batch it together with other breaking changes.