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node_modules/vant/es/picker/utils.mjs

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+import { isDef, clamp, extend, createNamespace } from "../utils/index.mjs";
+const [name, bem, t] = createNamespace("picker");
+const getFirstEnabledOption = (options) => options.find((option) => !option.disabled) || options[0];
+function getColumnsType(columns, fields) {
+  const firstColumn = columns[0];
+  if (firstColumn) {
+    if (Array.isArray(firstColumn)) {
+      return "multiple";
+    }
+    if (fields.children in firstColumn) {
+      return "cascade";
+    }
+  }
+  return "default";
+}
+function findIndexOfEnabledOption(options, index) {
+  index = clamp(index, 0, options.length);
+  for (let i = index; i < options.length; i++) {
+    if (!options[i].disabled) return i;
+  }
+  for (let i = index - 1; i >= 0; i--) {
+    if (!options[i].disabled) return i;
+  }
+  return 0;
+}
+const isOptionExist = (options, value, fields) => value !== void 0 && options.some((option) => option[fields.value] === value);
+function findOptionByValue(options, value, fields) {
+  const index = options.findIndex((option) => option[fields.value] === value);
+  const enabledIndex = findIndexOfEnabledOption(options, index);
+  return options[enabledIndex];
+}
+function formatCascadeColumns(columns, fields, selectedValues) {
+  const formatted = [];
+  let cursor = {
+    [fields.children]: columns
+  };
+  let columnIndex = 0;
+  while (cursor && cursor[fields.children]) {
+    const options = cursor[fields.children];
+    const value = selectedValues.value[columnIndex];
+    cursor = isDef(value) ? findOptionByValue(options, value, fields) : void 0;
+    if (!cursor && options.length) {
+      const firstValue = getFirstEnabledOption(options)[fields.value];
+      cursor = findOptionByValue(options, firstValue, fields);
+    }
+    columnIndex++;
+    formatted.push(options);
+  }
+  return formatted;
+}
+function getElementTranslateY(element) {
+  const { transform } = window.getComputedStyle(element);
+  const translateY = transform.slice(7, transform.length - 1).split(", ")[5];
+  return Number(translateY);
+}
+function assignDefaultFields(fields) {
+  return extend(
+    {
+      text: "text",
+      value: "value",
+      children: "children"
+    },
+    fields
+  );
+}
+export {
+  assignDefaultFields,
+  bem,
+  findIndexOfEnabledOption,
+  findOptionByValue,
+  formatCascadeColumns,
+  getColumnsType,
+  getElementTranslateY,
+  getFirstEnabledOption,
+  isOptionExist,
+  name,
+  t
+};