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Re:Show HN: Pts.js – A library for visualization and creativ... by vanderZwan on Wednesday August 08, 2018 @02:28PM (#17718189)
No, because TypeScript can be compiled to JavaScript, so you can use the resulting library in plain JS. If you want to check the source of the library, then yes, you need to know TS.
Re:Show HN: Pts.js – A library for visualization and creativ... by eropple on Wednesday August 08, 2018 @06:55PM (#17720336)
"Knowing TypeScript" is...functionally trivial, though. If one can read JavaScript and can't get enough from context to read TypeScript, I question their knowledge of JavaScript!

Perhaps writing it is a bigger ask--a twenty minute session of reading and poking at the language in VSCode did it for me, but maybe I'm secretly some kind of TypeScript savant--but this just plain should not be a problem for anybody who's up on modern JS.