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Me, migrating my code from JavaScript to TypeScript: (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 85 points 1 year ago (5 children)

Might as well not use TypeScript

[–] [email protected] 42 points 1 year ago (1 children)

Just as irritating as seeing people use linters only to have a lot of files with @ts-ignore all over the place... Like why even bother?

[–] [email protected] 8 points 1 year ago

oh you've got a private variable that I want to use? No worries, (foo as any)['secret'].

[–] [email protected] 12 points 1 year ago

using any is actually much worse than using TS, because you're basically telling the compiler "don't help me here".. at least with JS the IDE is gonna help you.. :/

[–] [email protected] 10 points 1 year ago

That's the joke

[–] [email protected] 3 points 1 year ago (1 children)

tbh I don't remember why I'm using TypeScript

[–] [email protected] 3 points 1 year ago

Cause otherwise it's plain JS :/

[–] [email protected] 3 points 1 year ago (1 children)

I don't follow, stamping every function with : any lets you merge the branch and deploy it... trying to properly type everything extends the initial migration time likely to a level where management just says no.

[–] [email protected] 7 points 1 year ago* (last edited 1 year ago) (1 children)

Use a combination of allowJs and ts-ignore, do progressive enhancement, and convert your codebase file by file. Adding any everywhere literally turns off type checking altogether codebase wide, including type inference. It also means a huge PR that's both just noise that needs to be fixed later, and messes with your git history (good luck getting anything useful out of blame or bisect now).

Just getting a green build doesn't mean things are okay. You're worse off than before doing that.

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago)

I disagree that you're worse off (the core of my comment was that even a shitty migration encourages better practices)... but I wasn't super familiar with TS hinting - using ts-ignore would be preferable.

Personally, I mostly work in PHP and we use a similar system. Strict typing is default off so we've slowly propagated declare(strict_types=1); to enable compile and runtime checking on a per file basis.