Trait derivation macros for wasm-bindgen

This crate contains a derivation macro for TryFrom<&JsValue> for T, where T is a type exported to JavaScript. See the documentation for usage examples.

lib.rs:

A proc-macro to be re-exported by wasm-bindgen-derive. We need this trampoline to enforce the correct bounds on the wasm-bindgen and js-sys dependencies, but those are technically not the dependencies of this crate, but only of the code it generates.