Improve MDN linking

[andyearnshaw]

Currently, only a handful of natives are linked to the MDN documentation. With the advent of ES6 and the rapid pace that new APIs are specced for the web platform, the list is lacking, but it may be possible to extend this to include almost everything, including new APIs that are added regularly.

Kuma (MDN's wiki platform) is able to return JSON content for pages, including a list of subpages. For example, adding $children to the JavaScript Reference/Global Objects URL will return all the native JavaScript objects available in the global scope in a parseable format:

{
  "locale": "en-US",
  "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects",
  "subpages": [
  {
    "locale": "en-US",
    "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array",
    "subpages": [],
    "slug": "Web/JavaScript/Reference/Global_Objects/Array",
    "title": "Array"
  },
  {
    "locale": "en-US",
    "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer",
    "subpages": [],
    "slug": "Web/JavaScript/Reference/Global_Objects/ArrayBuffer",
    "title": "ArrayBuffer"
  },
  {
    "locale": "en-US",
    "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean",
    "subpages": [],
    "slug": "Web/JavaScript/Reference/Global_Objects/Boolean",
    "title": "Boolean"
  },
  ...
}

Likewise, the Web API Interface index can be obtained in the same manner. Therefore, it should be possible to generate these links automatically, albeit with an addition compilation time cost.

[okuryu]

Thanks for your suggestion! I didn't know about the JSON data by MDN. I'd like to investigate for this.

[okuryu]

Fixed in #363.