data-common.json

{
  "babel": {
    "regenerator": {
      "val": true,
      "note_id": "babel-regenerator",
      "note_html": "This feature requires native generators or <code>regenerator-runtime</code>, it's a part of <code>babel-polyfill</code> or <code>babel-runtime</code>."
    }
  },
  "typescript": {
    "corejs": {
      "val": true,
      "note_id": "typescript-core-js",
      "note_html": "This feature is supported when using TypeScript with <a href='https://github.com/zloirock/core-js'>core-js</a>, or when a native ES6 host is used."
    },
    "fallthrough": {
      "val": "needs-polyfill-or-native",
      "note_id": "typescript-es6",
      "note_html": "TypeScript&apos;s compiler will accept code using this feature if the <code>--target ES6</code> flag is set, but passes it through unmodified and does not supply a runtime polyfill."
    },
    "asyncawait": {
      "val": true,
      "note_id": "typescript-async-await",
      "note_html": "TypeScript <code>async</code> / <code>await</code> requires native generators support."
    }
  },
  "firefox": {
    "sharedmem": {
      "val": "flagged",
      "note_id": "firefox-sharedmem",
      "note_html": "The feature have to be enabled via \"javascript.options.shared_memory\" setting under about:config.  It is enabled by default in Firefox Developer and Firefox Nightly."
    },
    "developer": {
      "val": false,
      "note_id": "firefox-developer",
      "note_html": "The feature is enabled by default only in Firefox Developer and Firefox Nightly."
    },
    "nightly": {
      "val": false,
      "note_id": "firefox-nightly",
      "note_html": "The feature is enabled by default only in Firefox Nightly."
    }
  },
  "chrome": {
    "sharedmem": {
      "val": "flagged",
      "note_id": "chrome-sharedmem",
      "note_html": "The feature have to be enabled via \"Experimental enabled SharedArrayBuffer support in JavaScript.\" setting under about:flags"
    },
    "simd": {
      "val": "flagged",
      "note_id": "chrome-simd",
      "note_html": "The feature have to be enabled via --js-flags=\"--harmony-simd\" flag"
    }
  },
  "sparseNote": {
    "val": true,
    "note_id": "sparse_arrays",
    "note_html": "Internet Explorer 6 - 8 do not differentiate between a dense array with undefined values, and a sparse array. Specifically, `0 in [,]` and `0 in [undefined]` both yield false - whereas in a compliant browser, the former would give `false`, the latter `true`. As such, ES5 array iteration methods can only be shimmed reliably when dealing with dense arrays."
  }
}