feat(utils): add getTagComparator that generate comparator, only numFirst supported

src/scripts/taglist-order.js

@@ -56,3 +56,35 @@ export const splitTagToArray = (tag) =>
     .split('')
     .reduce(tagReduce, [])
     .map((e) => (isDigit(e.charAt(0)) ? parseInt(e) : e));
+
+const applyOrder = (order, e1, e2) => {
+  if (e1 === e2) {
+    return 0;
+  }
+  if (order.numFirst) {
+    if (typeof e1 === 'number') {
+      const factor = order.numAsc ? 1 : -1;
+      return typeof e2 === 'number' ? (e1 - e2) * factor : -1;
+    } else if (typeof e2 === 'number') {
+      return 1;
+    } else {
+      const factor = order.alphaAsc ? 1 : -1;
+      return e1.localeCompare(e2) * factor
+    }
+  }
+};
+
+export const getTagComparator = (order) => {
+  return (e1, e2) => {
+    const tag1 = splitTagToArray(e1.tag || e1);
+    const tag2 = splitTagToArray(e2.tag || e2);
+
+    for (var i = 0; i < tag1.length && i < tag2.length; i++) {
+      const compare = applyOrder(order, tag1[i], tag2[i]);
+      if (compare != 0) {
+        return compare;
+      }
+    }
+    return (e1.tag || e1).length - (e2.tag || e2).length;
+  };
+};