`DataView` and other interfaces missing from lib.d.ts

[basarat]

Looking at history : https://github.com/Microsoft/TypeScript/commits/master/bin/lib.d.ts

Was there on April 11 : https://github.com/Microsoft/TypeScript/blob/6f1feffe6710a3201fb46a0b01e16051bfc18a29/bin/lib.d.ts#L1689

Isn't there on April 18: https://github.com/Microsoft/TypeScript/blob/b8ebf561f94ea27ecfc6af3c2b20661e6fcd79ed/bin/lib.d.ts

Report by Atom-TypeScript user @vaughnroyko

The following code now fails (source from : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView):

var littleEndian = (function() {
  var buffer = new ArrayBuffer(2);
  new DataView(buffer).setInt16(0, 256, true);
  return new Int16Array(buffer)[0] === 256;
})();
console.log(littleEndian); // true or false

[zhengbli]

They are removed from extenstions.d.ts at #2739, as they are not used in the IE dom any more. See #2698. Although they should exist in the ES6 es6.d.ts.

[basarat]

Although they should exist in the ES6 es6.d.ts.

shouldn't they either exist in both or not exist in either.

as they are not used in the IE dom any more

I still see it in http://people.mozilla.org/~jorendorff/es6-draft.html#sec-dataview-constructor and I still see it in my IE (v11).

Using these API is not the same as targeting ES6 as far as I understand. But then again I'm not the one suffering here, just channelling :)

[zhengbli]

My understanding is it is only defined in ES6 spec. And to clarify, the "not used in IE" bit I mentioned is referring to that according to the new IE spec files, these types won't be used by any other dom types in the next version of IE. @mhegazy, do we separate "using ES6 APIs" with "targeting ES6"?

[mhegazy]

The definition in lib.es6.d.ts for matches the ES6 spec. it does not match the definition in existing engines today. Nothing stops us from moving them to lib.d.ts instead. but that still means that IE11 users will get errors.

The issue is with TypedArrays (Int32Array for instance), i believe ArrayBuffer and DataView should be safe to put back.

As a work around, you can either copy the definition from https://github.com/Microsoft/TypeScript/blob/release-1.4/bin/lib.d.ts in a local file in your project. or copy the whole library and include it in your project.

[mhegazy]

should be in master now.

[basarat]

@mhegazy Thanks. But as I said in the title there are others Since I am not the one suffering from this I'd like to bring in @cmichaelgraham who feels that there is stuff in lib.d.ts that should be there but is no longer there. It is there in lib.es6.d.ts

[cmichaelgraham]

fyi - just finished deleting ~360 lines in lib.es6.d.ts and about 12 lines in lib.core.es6.d.ts so i could get a successful compile of an aurelia app in atom-typescript.

repo is here

i copied lib.es6.d.ts because i was getting tons of errors about ...rest parameter must be an array (even though it had any[] as its type) and couldn't find Function type (and other errors too).

i copied lib.core.es6.d.ts because it couldn't find HTMLElement type.