I am passing a ref property into my custom FieldInput that I use for Formik validation of my form. However, it gives a few Typescript errors. For instance, in my function:
const handleSubmitForm = (
values: FormValues,
helpers: FormikHelpers<FormValues>,
) => {
setShowFlatList(true);
Keyboard.dismiss();
helpers.resetForm();
if (fieldRef && fieldRef.current){
fieldRef.current.blur();}
helpers.resetForm();
};
I get an error on fieldRef.current that Object is possibly 'undefined'.. I thought adding the if condition would fix it but it didn't. Also, when I submit the form, I get a warning that
Warning: An unhandled error was caught from submitForm()
Error: "fieldRef.current.blur is not a function. (In 'fieldRef.current.blur()', 'fieldRef.current.blur' is undefined)" in handleSubmitForm
Similarly, in my custom FieldInput component where I use ref={fieldRef}, I get an error that:
Type '{ ref: MutableRefObject<undefined>; setFieldTouched: (field: string, isTouched?: boolean | undefined, shouldValidate?: boolean | undefined) => void; handleChange: { ...; }; ... 4 more ...; placeholderText: string; }' is not assignable to type 'IntrinsicAttributes & FieldInputProps & { children?: ReactNode; }'.
Property 'ref' does not exist on type 'IntrinsicAttributes & FieldInputProps & { children?: ReactNode; }'.ts(2322)
How can I fix these?
Here's a codesandbox:
