Normalizer does not work when normalized value is empty

[kiyunkim]

Describe the bug

Normalizer function does not replace values when normalized value is ''. E.g. When normalizer function strips out numbers, putting in numbers in an input does not empty out the input.

To Reproduce

Steps to reproduce the behavior:

Case 1:

1. Set normalizer method to a function that removes numbers

normalizer: value => {
  const pattern = new RegExp("[^ A-Za-z'-]", 'gi');
  return value.replace(pattern, '');
}

2. In the input with the normalizer, type in any numbers. E.g. 23434

Case 2:

1. Same step as Case 1
2. In the input, type in any letters and then numbers. E.g. Sdf234

Expected behavior

Input should clear the numbers and display normalized input.

Actual Behavior

Case 1: input does not clear numbers ❌
Case 2: Works as intended; input clears out numbers and leaves letters. ✅

Screenshots

Case 1

Case 2

Environment:

Tested on Mac Chrome

Additional context

Line 121-124 is probably the culprit here

      // Only change the value if it's different from the normalized one.
      if (normalizedValue && normalizedValue !== field.value) {
        field.value = normalizedValue;
      }

Since normalizedValue is empty, the if statement is not being returned as a true statement