TypeScript, React causing errors using forwardRef with props & ref is null

Question

Need: want to pass props & forwardRef to child component

MVCE: this is what I get when I try this on stackblitz - the reference inside the child is null - but no error (like below)...

But, the error I am getting in a codebase

would appreciate an answer/link which can explain this clearly and help resolve this - the examples I saw passed props only or forwardRef only; And on stackblitz, it worked also;

stackblitz.com/edit/react-typescript-forwardref-with-props has the details which work on stackblitz but give an error in my local repo — Akber Iqbal
– Akber Iqbal, Commented Feb 16, 2021 at 10:06

thedude · Accepted Answer · 2021-02-16 10:17:01Z

4

You have mixed up the order of the type arguments. forwardRef signature looks like this: function forwardRef<T, P = {}> where T is the ref type and P the props type.

Change your code like so:

export const DivField = forwardRef<HTMLDivElement, any>((props, ref) => {
  console.log("DivField:", props, " -- ref:", ref);
  return <div ref={ref}>this is the div field only </div>;
});
DivField.displayName = "DivField";

Link to Stackblitz

answered Feb 16, 2021 at 10:17

thedude

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2 Comments

Akber Iqbal Over a year ago

there is no error on stackblitz, the error comes on my local repo... i am unable to recreate the issue on stackblitz as it is...

thedude Over a year ago

your stackblitz configuration used old @types with latest react and react-dom, once I upgraded (see my package.json) I got the same error on stackblitz

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