Support more exotic method names

[maxnordlund]

Since ES6 allows methods to be named to pretty much anything, like return or throw, it would be nice if yajs correctly highlighted this as method names, instead of marking it as a syntax error. The same goes for computed method names, e.g. [Symbol.iterator]. The latter seams to mess up the following return statement, which is sad.

For comparison it works as intended when highlighted as TypeScript, which is a superset of JavaScript.

JavaScript	TypeScript

class Foo {
  constructor() {}

  throw(error) {}

  [Symbol.iterator](): Iterator {
    return this
  }

}

[othree]

Both issue were fixed, but you will need to remove the type annotation to check it. Currently, type annotation is not under TC39's discussion. So I have no plan to support it right now.

I think type annotation will merge into JavaScript one day. But its still unclear when and how it looks like.

[maxnordlund]

Awesome, that's much nicer. Yes, I forgot to remove the annotations.