this post was submitted on 08 Oct 2023
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Programming
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What are the additional requirements? Afaik valid JS is valid TS.
Perfectly valid, and extremely commonly used, coding pattern in JavaScript - it's essentially the normal way to do an associative array or hashmap in JavaScript. It's also one of the commonly used ways to (poorly) simulate OOP in JavaScript.
In TypeScript, it fails. You can't treat an object as an arbitrary key/value pair. That's a good thing... but still, it means TypeScript is not a superset of JavaScript.
AFAIK that source code will be accepted by the TypeScript compiler if the file has a
*.js
extension, but that's an ugly workaround and it also means you can't copy/paste code between files. You have to rewrite the code.Doesn't change the fact that you can strip types and get js
I know a cool library you can use to convert
.ts
files in Js! It's calledtsc
!/s