Currently the innerRef has signature of (instance: any) => void which does not fit any type I can remind of, like FormikProps or FormikHelpers
Before that when I was using the 1.5 version where I could call methods like setFieldTouched on the ref therefore an inner Ref should be of type FormikHelper or at least inherit it. The (instance: any) => void looks broken
Since TypeScript is not really helpful i used as casting.
<Formik innerRef={instance=>{formikRef=instance}} {...otherProps}/>`
This however makes a non-constant formikRef variable
let formikRef = useRef(null) as any;
I do not think this is correct way with 2.x
We do currently use any. You are free to open a PR to change the innerRef to the signature that I wrote for useRef here: #2222
TypeError: formikRef.setFieldTouched is not a function
@ProteanCode are you using innerRef? My PR using ref itself is a draft, but you can take the same types I used to implement useRef to open a PR for innerRef which, if accepted, should solve your issue with any.