I have a svelte component in Foo.svelte
that looks like this:
<script lang="ts">
...
</script>
<input on:input={(evt) => console.log("hello there")} />
Eslint gives me an error for the <input>
line complaining that the anonymous function doesn't have an explicit return type.
Missing return type on function.eslint@typescript-eslint/explicit-function-return-type
If I try to label the types in the function like (evt: Target): void => console.log("hello there")
I get a svelte parser error and eslint unexpected token error.
Am I labelling the types wrong, missing a configuration or is typing anonymous function not possible with svelte?
I know it's possible to turn off the eslint rule, but I would rather keep it.
This is not possible in Svelte 3/4.
TS syntax is not supported in the template, you have to extract the function to the <script>
.
This should work starting in Svelte 5.