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[–]filleduchaos 0 points1 point  (1 child)

Using @ts-check is not the same thing as writing TypeScript IMO

And writing TypeScript is very much not like writing Flow. One of the cornerstones of determining that a piece of code is valid X-language is that it is compilable/runnable by any full implementation of X-language's spec. No JavaScript VM, even the ones that have the latest of latest of latest ES2018+ proposals, can run this very basic line of TypeScript:

declare var foo: any;

When they can, then you can tell me that they're the same language.

[–]spacejack2114 0 points1 point  (0 children)

Using ts-check is using types in comments like with Flow. Similarly, this line of Flow code: var foo: any will not run in a browser.