fix(Stepper): incorrect value when format minus value (#6238)

src/field/index.js

@@ -1,6 +1,6 @@
 // Utils
-import { formatNumber } from './utils';
 import { preventDefault } from '../utils/dom/event';
+import { formatNumber } from '../utils/format/number';
 import { resetScroll } from '../utils/dom/reset-scroll';
 import {
   createNamespace,

src/field/utils.ts

@@ -1,16 +0,0 @@
-export function formatNumber(value: string, allowDot: boolean) {
-  if (allowDot) {
-    const dotIndex = value.indexOf('.');
-
-    if (dotIndex > -1) {
-      value =
-        value.slice(0, dotIndex + 1) + value.slice(dotIndex).replace(/\./g, '');
-    }
-  } else {
-    value = value.split('.')[0];
-  }
-
-  const regExp = allowDot ? /[^0-9.]/g : /\D/g;
-
-  return value.replace(regExp, '');
-}