Question 33841 in React native Question posted in
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Is there a way to know the exact type of props coming from a parent element in TypeScript? – React native

I’m using TypeScript with React Native to develop a mobile app.
To restore the scroll position of the previous screen, I created a variable and assign the useRef() to handle the scroll.
What is the type for the ref prop?
I’ll share my code below.

const sectionListRef = useRef();
...
sectionListRef.current.ScrollToLocation // <-- Property 'scrollToLocation' does not exist on type 'never';

I have no idea which type should be…
Can someone please tell me why this error happens and how I resolve this?

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2

Answers


  1. 0

    This syntax maybe help you:

    For example:

    const someRef = useRef<Your Type>(Your Initial Value);

    You should specify type and initial value.

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  2. 0

    I did find a similar solution for FlatList, perhaps try if this could help:

    const sectionListRef = useRef<SectionList>(null);

    When using .scrollToLocation():

    More about scrollToLocation

    sectionListRef.current?.scrollToLocation(param);

    I couldn’t find any offical guide for this though, but hopefully these would help as a reference.

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