From 49cb6f74bc1d106e1b68374a3b5d040b6a1b281d Mon Sep 17 00:00:00 2001
From: kena0ki <ken3574.25@gmail.com>
Date: Thu, 1 Apr 2021 00:11:30 +0900
Subject: [PATCH] Remove non-null assertion

---
 src/browser/Terminal.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/browser/Terminal.ts b/src/browser/Terminal.ts
index 95d74254..371f5549 100644
--- a/src/browser/Terminal.ts
+++ b/src/browser/Terminal.ts
@@ -304,7 +304,9 @@ export class Terminal extends CoreTerminal implements ITerminal {
     const viewportRelativeCursorY = cursorY - this.buffer.ydisp;
     const cursorX = Math.min(this.buffer.x, this.cols - 1);
     const cellHeight = this._renderService.dimensions.actualCellHeight;
-    const width = this.buffer.lines.get(cursorY)!.getWidth(cursorX);
+    const bufferLine = this.buffer.lines.get(cursorY);
+    if (!bufferLine) return;
+    const width = bufferLine.getWidth(cursorX);
     const cellWidth = this._renderService.dimensions.actualCellWidth * width;
     const cursorTop = viewportRelativeCursorY * this._renderService.dimensions.actualCellHeight;
     const cursorLeft = cursorX * this._renderService.dimensions.actualCellWidth;