Travis tests show hundreds of warning for `'y' is defined but never used` and
when investigating it looks like a mistake was introduced in 0938858aa
during #272, so hopefully this'll be an easy fix!
* No need for version deps in dev-deps
These are all internal so we can drop the version
* Remove wasm-bindgen-cli's parity-wasm dep
No longer needed
* Tweak file hierarchy in webidl tests
Use Cargo's conventions to avoid the need to define `[[test]]` sections
* Remove unused imports
If a JS import's shim isn't actually imported that means that somewhere along
the way it was optimized out or it was never used in the first place! In that
case we can skip generation of the JS bindings for it as it's not needed.
This is similar to `js_namespace` but translates into a static method on `Class`
rather than a free function. This allows us to have bindings to things like
`Object.keys` as `Object::keys`.
This can happen when a nested dependency crate exports things but the root crate
doesn't use them. In these cases, it is fine to ignore the missing descriptor,
because the thing it describes was removed as dead code.
* backend comments complete
* better matching
* gen comments
* Add example
* Move test bindings gen to own fn
* move build step into build fn
* add fn to read js, refactor gen_bindings/test to allow for this
* Add comments test
* Update readmes
* add comments to travis
* fix broken tests
* +x on build.sh
* fix wbg cmd in build.sh
* Address fitzgen's comments
This commit optimizes constructing an instance of `JsValue` which is one of
`null`, `undefined`, `true`, or `false`. These are commonly created on the Rust
side of things and since there's only a limited set of values we can easily
prepopulate the global slab with a few entries and use hardcoded indices to
refer to these constants. This should avoid the need to travel into JS to insert
a `null` or and `undefined` into the global slab.
