Does wxt work with TypeScript 4?

[ferenc-a]

Running wxt build works fine in a TypeScript 4 monorepo, but running tsc --noEmit (which is present in the init project scripts by the name of compile) throws an error. How can build produce a result even though compile fails?
My issue is probably caused by TypeScript not having the bundler option for module resolution, which is set in wxt's generated tsconfig. Some comments I found on the repo also reference TypeScript 5 feature (like extending multiple configs: #572 (reply in thread), #868 (comment)).

Does this package supprt TypeScript, is there anything I can configure for it to work? If not, this should be documented somewhere. If not on the main readme, at least somewhere like here: https://wxt.dev/guide/essentials/config/typescript#typescript-configuration.

[aklinker1]

How can build produce a result even though compile fails?

Because WXT strips out all types during the build process without checking them. This is very standard for build frameworks, because typescript is really slow.

My issue is probably caused by TypeScript not having the bundler option for module resolution, which is set in wxt's generated tsconfig

You should be able to override it in your root tsconfig, the one that extends the one generated by WXT. If that doesn't work, you could use the prepare:types hook to modify the tsconfig text content before it's written to the disk.

[ferenc-a]

I had other problems with the moduleResolution workaround, and I have no idea what prepare:types is, nor could I find it by Googling.
I managed to update to TS 5 in the end, my issue is done, and I'm not sure what would have fixed it with TS 4.

[aklinker1]

For future reference: https://wxt.dev/api/reference/wxt/interfaces/WxtHooks.html#prepare-types