Function backspace

packages/react-aria/src/datepicker/useDateSegment.ts:110–127

()

  let parser = useMemo(() => new NumberParser(locale, {maximumFractionDigits: 0}), [locale]);

  let backspace = () => {
    if (segment.text === segment.placeholder) {
      focusManager.focusPrevious();
    }
    if (parser.isValidPartialNumber(segment.text) && !state.isReadOnly && !segment.isPlaceholder) {
      let newValue = segment.text.slice(0, -1);
      let parsed = parser.parse(newValue);
      newValue = parsed === 0 ? '' : newValue;
      if (newValue.length === 0 || parsed === 0) {
        state.clearSegment(segment.type);
      } else {
        state.setSegment(segment.type, parsed);
      }
      enteredKeys.current = newValue;
    } else if (segment.type === 'dayPeriod' || segment.type === 'era') {
      state.clearSegment(segment.type);
    }
  };

  let {keyboardProps} = useKeyboard({
    shortcuts: {