message: fix(Picker): empty column will cause error
diff: @@ -97,8 +97,10 @@ export default defineComponent({
  currentOffset.value = offset;
  };
  + const isReadonly = () => props.readonly || !props.options.length;
  +
  const onClickOption = (index: number) => {
  - if (moving || props.readonly) {
  + if (moving || isReadonly()) {
  return;
  }
  @@ -134,7 +136,7 @@ export default defineComponent({
  };
  const onTouchStart = (event: TouchEvent) => {
  - if (props.readonly) {
  + if (isReadonly()) {
  return;
  }
  @@ -153,7 +155,7 @@ export default defineComponent({
  };
  const onTouchMove = (event: TouchEvent) => {
  - if (props.readonly) {
  + if (isReadonly()) {
  return;
  }
  @@ -178,7 +180,7 @@ export default defineComponent({
  };
  const onTouchEnd = () => {
  - if (props.readonly) {
  + if (isReadonly()) {
  return;
  }
  