message: fix(Stepper): can't work when step is small
diff: @@ -11,6 +11,12 @@ function equal(value1, value2) {
  return String(value1) === String(value2);
  }
  +// add num and avoid float number
  +function add(num1, num2) {
  + const cardinal = 10 ** 10;
  + return Math.round((num1 + num2) * cardinal) / cardinal;
  +}
  +
  export default createComponent({
  props: {
  value: null,
  @@ -171,14 +177,7 @@ export default createComponent({
  const diff = type === 'minus' ? -this.step : +this.step;
  - let value = +this.currentValue + diff;
  -
  - // avoid float number
  - if (!isDef(this.decimalLength)) {
  - value = Math.round(value * 100) / 100;
  - }
  -
  - value = this.format(value);
  + const value = this.format(add(+this.currentValue, diff));
  this.emitChange(value);
  this.$emit(type);
  