Add a page (or pages) with a list of keywords, and links to documentation

[zspitz]

Such a list would make it easier for users to get and retain a fuller grasp of Typescript, by having an overview of the syntax of the language, and by clearly differentiating the parts that are common to ES5/6/7 and the parts that are unique to Typescript.

Presenting this information in this way, would allow users to reduce the question of "What does this keyword do in Typescript?", to "What does this keyword do differently in Typescript than in Javascript?".

There is something similar on MDN, but I think the format of the Javascript statment list on MSDN, with a one-line description for each keyword, is better:

Keyword	Definition
const	Force the use of const enums

(The MDN list is actually a single page describing the entire JS grammer -- whitespace, comments, operators, and literals -- but there is no point in describing these behaviors because whitespace, comments etc. are exactly the same as in Typescript. The only major area of difference is in the keywords.)

For the usages which Typescript shares with Javascript, I'm not sure which would be better -- not to mention them (this is a Typescript reference, not a Javascript reference), or link to authoritative sources of Javascript documentation (MDN and/or MSDN):

Keyword	Language	Definition
const	JS	MDN
	TS	Force the use of const enums (Spec)
var	JS	MDN MSDN

[mhegazy]

Most of the content is available. so if you would be willing to start the page would happily take the PR.

[zspitz]

microsoft/TypeScript#2536 - issue regarding the spec.

[zspitz]

@mhegazy I've created a PR.
There are a few keywords which I am unsure of their meaning / context:

• of, from, package

and there are a few for which I couldn't find documentation in the Handbook:

• type annotaions - null, never, void, undefined
• is
• readonly is referencing Readonly properties and index signatures TypeScript#6532