message: change var to const
diff: @@ -173,8 +173,8 @@ class UiState {
  }
  @action.bound resizeConsole(height) {
  - var maxConsoleHeight = this.windowHeight - this.minContentHeight;
  - var tmpHeight = height > maxConsoleHeight ? maxConsoleHeight : height;
  + const maxConsoleHeight = this.windowHeight - this.minContentHeight;
  + const tmpHeight = height > maxConsoleHeight ? maxConsoleHeight : height;
  this.storedConsoleHeight = height > this.minConsoleHeight + 20 ? height : this.storedConsoleHeight;
  this.consoleHeight = height > this.minConsoleHeight ? tmpHeight : this.minConsoleHeight;
  