From d52e5113bfdce5daad9288bd863685ea532f0d1e Mon Sep 17 00:00:00 2001
From: "sheche@microsoft.com" <sheche@microsoft.com>
Date: Thu, 28 Feb 2019 20:25:25 +0800
Subject: [PATCH 1/2] Speed up the load time of the explorer

---
 src/explorer/LeetCodeTreeDataProvider.ts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/explorer/LeetCodeTreeDataProvider.ts b/src/explorer/LeetCodeTreeDataProvider.ts
index 25ebbb8b..1b42a053 100644
--- a/src/explorer/LeetCodeTreeDataProvider.ts
+++ b/src/explorer/LeetCodeTreeDataProvider.ts
@@ -66,7 +66,6 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
         }
         if (!element) { // Root view
             return new Promise(async (resolve: (res: LeetCodeNode[]) => void): Promise<void> => {
-                await this.getProblemData();
                 resolve([
                     new LeetCodeNode(Object.assign({}, defaultProblem, {
                         id: Category.Difficulty,

From 68e38d360907526a7c4a9640ac286dcee02a6c51 Mon Sep 17 00:00:00 2001
From: "sheche@microsoft.com" <sheche@microsoft.com>
Date: Thu, 28 Feb 2019 20:34:37 +0800
Subject: [PATCH 2/2] Remove the promise

---
 src/explorer/LeetCodeTreeDataProvider.ts | 38 +++++++++++-------------
 1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/src/explorer/LeetCodeTreeDataProvider.ts b/src/explorer/LeetCodeTreeDataProvider.ts
index 1b42a053..593dd103 100644
--- a/src/explorer/LeetCodeTreeDataProvider.ts
+++ b/src/explorer/LeetCodeTreeDataProvider.ts
@@ -65,26 +65,24 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
             ];
         }
         if (!element) { // Root view
-            return new Promise(async (resolve: (res: LeetCodeNode[]) => void): Promise<void> => {
-                resolve([
-                    new LeetCodeNode(Object.assign({}, defaultProblem, {
-                        id: Category.Difficulty,
-                        name: Category.Difficulty,
-                    }), "ROOT", false),
-                    new LeetCodeNode(Object.assign({}, defaultProblem, {
-                        id: Category.Tag,
-                        name: Category.Tag,
-                    }), "ROOT", false),
-                    new LeetCodeNode(Object.assign({}, defaultProblem, {
-                        id: Category.Company,
-                        name: Category.Company,
-                    }), "ROOT", false),
-                    new LeetCodeNode(Object.assign({}, defaultProblem, {
-                        id: Category.Favorite,
-                        name: Category.Favorite,
-                    }), "ROOT", false),
-                ]);
-            });
+            return [
+                new LeetCodeNode(Object.assign({}, defaultProblem, {
+                    id: Category.Difficulty,
+                    name: Category.Difficulty,
+                }), "ROOT", false),
+                new LeetCodeNode(Object.assign({}, defaultProblem, {
+                    id: Category.Tag,
+                    name: Category.Tag,
+                }), "ROOT", false),
+                new LeetCodeNode(Object.assign({}, defaultProblem, {
+                    id: Category.Company,
+                    name: Category.Company,
+                }), "ROOT", false),
+                new LeetCodeNode(Object.assign({}, defaultProblem, {
+                    id: Category.Favorite,
+                    name: Category.Favorite,
+                }), "ROOT", false),
+            ];
         } else {
             switch (element.name) { // First-level
                 case Category.Favorite: