SolidJS•15mo ago

Question about onError

  onError((err) => {
    console.error(err);
  })

  onMount(() => {
    loadUserData(params.username)
      .then(setUser)
  })

  onError((err) => {
    console.error(err);
  })

  onMount(() => {
    loadUserData(params.username)
      .then(setUser)
  })

I've got a throw inside my loadUserData because I thought onError would catch it, so I guess I've misused onError.

5 Replies

Metru•15mo ago

Also, am I able to safely make onMount's callback async?

lxsmnsyc•15mo ago

the only function that can handle errors on all of JS is "window.onerror" and that's on the browser you can imagine onError as try-catch. If you run a setTimeout in try, and the callback throws, would you expect the catch block to receive it?

Metru•15mo ago

So I take it onError is less of a "catch-all" within this component, and more of a if literally this component function throws. From the docs "Registers an error handler method that executes when child scope errors", I had assumed the solid compiler did something to be able to react to errors originating from the component. Wasn't sure how much "magic" solid is doing vs something like svelte.

lxsmnsyc•15mo ago

the compiler only touches JSX. What you see is what Solid looks like with or without the compiler

Metru•15mo ago

Gotcha So without jsx, solid would run in the browser directly? Thats pretty neat

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Question about onError