I still cannot understand how, in 2015, the ECMAScript spec is maintained by Allen Wirfs-Brock as a Word document. In their (partial) defense, a TC-39 member explained to me how it's been "good enough" up to now and that for ES7 they want to move to a plain-text based source format from which publishable versions can get generated.
It does, yes. See the comment at the top of the file: It requires cscript.exe, which is more or less just the Windows Script Host.
I pointed out the script ostensibly because of the similarities of ES6 and TypeScript both having specs written in Word, and of a desire to convert into a much more web-friendly format. See specs.md: https://github.com/Microsoft/TypeScript/tree/master/doc
Speaking more honestly, I was being a bit tongue-in-cheek and trying to bounce certain eyes onto the TypeScript repo in the continued hopes that its transparent, optional, gradual type system be further considered for future versions of ES (such as 7...wink?)
Same reason a lot of people use Word, revision tracking. Its the killer feature. Source code control, if it were for the normal person, could work but it would need some editor integrated tooling to show all the changes in place.
If you want to replace Word, make this your first and focused feature. The easy, no distraction writing folks are already numerous and successful for their niche.
I haven't seen a wiki with as good and editor as a standard word processor, also I'm not sure they are as distraction free and the current crop of distraction free apps like Scrivener and WriteRoom.
VoodooPad probably qualifies as a wiki / word processor fusion that works really well for writing.
It's a race to implement. Looks as if Mozilla is going to get there first. But, I wouldn't be surprised if Spartan/Chakra ended up surprising us with full support when it's released. https://kangax.github.io/compat-table/es6/
Also, they would have to work tremendously on the dev tools. IE dev tools in the present form are not very good, compared to Chrome Dev tools, or FF's dev edition (with Web IDE etc.).
Yeah that slide is a little confusing because they messed up the second step. JS Facade is supposed to be where Dart Facade is and vice versa.
Also, Angular 2.0 is going to be written in TypeScript (which will be compiled to plain JS) but you can use ES5, ES6, TypeScript or Dart depending on what you want to use for your application.