Breaking change in Formik validate v2

[gwn]

📖 Documentation

Validate function is not accepting rejected promises of errors, as it did in v1. I was going to report this as a bug, but this looked intentional to me after checking out the code:

formik/packages/formik/src/Formik.tsx

Lines 190 to 206 in 9316a86

	} else if (isPromise(maybePromisedErrors)) {
	(maybePromisedErrors as Promise<any>).then(
	errors => {
	resolve(errors || emptyErrors);
	},
	actualException => {
	if (process.env.NODE_ENV !== 'production') {
	console.warn(
	`Warning: An unhandled error was caught during validation in <Formik validate />`,
	actualException
	);
	}
	reject(actualException);
	}
	);
	} else {

So if this is intentional, it needs to be documented among other breaking changes (which atm is not):
https://github.com/jaredpalmer/formik/blob/master/docs/migrating-v2.md#breaking-changes

If not, needs to be fixed.

Related issue from v1: #966

[jaredpalmer]

Yeah. Shit, I guess this is breaking after we stopped swallowing the errors in recent releases. can you add to the migration docs?

[gwn]

Sure, I will.

[jaredpalmer]

Thanks!