Merge pull request #131 from editor-js/improve-normalize-data-util

imp(utils): improved normalize data util

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@editorjs/list",
-  "version": "2.0.2",
+  "version": "2.0.3",
   "keywords": [
     "codex editor",
     "list",

src/types/ListParams.ts

@@ -29,6 +29,11 @@ export interface OldListData {
   items: string[];
 }
 
+/**
+ * Type that represents data of the List tool
+ */
+export type OldNestedListData = Omit<ListData, 'meta'>;
+
 /**
  * Interface that represents old checklist data format
  */

src/utils/normalizeData.ts

@@ -1,20 +1,29 @@
-import type { OldListData, ListData, ListItem, OldChecklistData } from '../types/ListParams';
+import type { OldListData, ListData, ListItem, OldChecklistData, OldNestedListData } from '../types/ListParams';
 
 /**
  * Method that checks if data is result of the Old list tool save mtehod
- * @param data - data of the OldList, Checklist or Editorjs List tool
+ * @param data - data of the OldList, Checklist, OldNestedList or Editorjs List tool
  * @returns true if data related to the List tool, false otherwise
  */
-function instanceOfOldListData(data: ListData | OldListData | OldChecklistData): data is OldListData {
+function instanceOfOldListData(data: ListData | OldListData | OldChecklistData | OldNestedListData): data is OldListData {
   return (typeof data.items[0] === 'string');
 }
 
+/**
+ * Method that checks if data is result of the Old nested list tool save method
+ * @param data - data of the OldList, Checklist, OldNestedList or Editorjs List tool
+ * @returns true if data is related to the Nested List tool, false otherwise
+ */
+function instanceOfOldNestedListData(data: ListData | OldListData | OldChecklistData | OldNestedListData): data is OldNestedListData {
+  return !('meta' in data);
+}
+
 /**
  * Method that checks if data is result of the Old checklist tool save method
- * @param data - data of the Checklist, OldList or Editorjs List tool
+ * @param data - data of the Checklist, OldList, OldNestedList or Editorjs List tool
  * @returns true if data is related to the Checklist tool, false otherwise
  */
-function instanceOfChecklistData(data: ListData | OldListData | OldChecklistData): data is OldChecklistData {
+function instanceOfChecklistData(data: ListData | OldListData | OldChecklistData | OldNestedListData): data is OldChecklistData {
   return (
     typeof data.items[0] !== 'string'
     && 'text' in data.items[0]
@@ -62,6 +71,12 @@ export default function normalizeData(data: ListData | OldListData | OldChecklis
       meta: {},
       items: normalizedDataItems,
     };
+  } else if (instanceOfOldNestedListData(data)) {
+    return {
+      style: data.style,
+      meta: {},
+      items: data.items,
+    };
   } else {
     return data;
   }