fix: still call validators on whitespace

Author: jedwards1211

README.md

@@ -52,6 +52,6 @@ If you provide this, it will be called with the output of `normalizeNumber`.
 
 #### `validate?: Validator | Array<Validator>`
 
-Unlike a normal `Field`, `NumericField` will call your validators with the normalized number from
+Unlike a normal `Field`, `NumericField` will call your validators with the normalized value from
 `normalizeNumber`.  If its value is an invalid number but not whitespace, it will produce a
 "must be a number" validation error without calling your own validators.

src/createNumericField.js

@@ -36,8 +36,7 @@ function createNumericField<P: {
     validate = (value: any, allValues: Object, props: Object): ?string => {
       const normalizeNumber = this.props.normalizeNumber || defaultNormalize
       const normalized = normalizeNumber(value)
-      if (typeof normalized === 'string') {
-        if (WHITESPACE.test(normalized)) return
+      if (typeof normalized === 'string' && !WHITESPACE.test(normalized)) {
         return 'must be a number'
       }
       const {validate} = this.props