@@ -41,7 +41,6 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
4141constructor ( private context :vscode . ExtensionContext , private channel :vscode . OutputChannel ) { }
4242
4343public async refresh ( ) :Promise < void > {
44- this . treeData . clear ( ) ;
4544await this . getProblemData ( ) ;
4645this . onDidChangeTreeDataEvent . fire ( ) ;
4746}
@@ -100,14 +99,14 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
10099
101100private async getProblemData ( ) :Promise < void > {
102101const allProblems :list . IProblem [ ] = await list . listProblems ( this . channel ) ;
102+ this . treeData . clear ( ) ;
103103for ( const problem of allProblems ) {
104104const problems :list . IProblem [ ] | undefined = this . treeData . get ( problem . difficulty ) ;
105105if ( problems ) {
106106problems . push ( problem ) ;
107107} else {
108108this . treeData . set ( problem . difficulty , [ problem ] ) ;
109109}
110-
111110}
112111}
113112
@@ -156,5 +155,4 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
156155} ) ;
157156return difficultynodes ;
158157}
159-
160158}