CODEWITHSUNDEEP
typescriptsvelte
Maciej Kravchyk
Maciej Kravchyk

Reputation: 16607

Check TypeScript types in Svelte files from command line

I run tsc --noemit to ensure the are no type errors in the codebase. Unfortunately, it does not seem to check .svelte files.

Is there a way to make it work? I can see the type errors in .svelte files open in VS Code, so I think it has to be possible somehow with existing tooling.

Also I'm using the official @rollup/plugin-typescript I'm aware there is also rollup-plugin-typescript2 which checks types on build and may be an alternative solution, but I prefer to not enforce types on build and check types separately as I currently do.

Upvotes: 5

Views: 1530

Answers (1)

dummdidumm
dummdidumm

Reputation: 5426

Use svelte-check for this: https://www.npmjs.com/package/svelte-check

tsc --noemit only knows about TypeScript files, not Svelte files. svelte-check fills that gap and is able to check both TS and Svelte files.

When using it with TypeScript the recommended way to run it is: svelte-check --tsconfig ./path/to/your/tsconfig.json . Assuming your tsconfig.json is in your project root and you run that from the root, do svelte-check --tsconfig ./tsconfig.json . It's advised to install svelte-check locally, so you can add a script to your package.json with the mentioned command.

Upvotes: 5

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