Closes #342 - adds protection for undefined message

Author: eamodio

CHANGELOG.md

@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ### Fixed
 - Fixes [#345](https://github.com/eamodio/vscode-gitlens/issues/345) - Custom date formats don't work in the GitLens view
 - Fixes [#336](https://github.com/eamodio/vscode-gitlens/issues/336) - Default Settings Get Added Automatically
+- Fixes [#342](https://github.com/eamodio/vscode-gitlens/issues/342) - GitLens crashes while debugging with Chrome Debugger a larger project
 - Fixes issue where username and/or password in a remote urls could be shown
 
 ## [8.2.1] - 2018-04-11

src/annotations/blameAnnotationProvider.ts

@@ -130,7 +130,9 @@ export abstract class BlameAnnotationProviderBase extends AnnotationProviderBase
         if (commit === undefined) return undefined;
 
         const hover = await Annotations.changesHover(commit, position.line, await GitUri.fromUri(document.uri));
-        return new Hover(hover.hoverMessage!, document.validateRange(new Range(position.line, 0, position.line, RangeEndOfLineIndex)));
+        if (hover.hoverMessage === undefined) return undefined;
+
+        return new Hover(hover.hoverMessage, document.validateRange(new Range(position.line, 0, position.line, RangeEndOfLineIndex)));
     }
 
     private async getCommitForHover(position: Position): Promise<GitCommit | undefined> {

src/annotations/recentChangesAnnotationProvider.ts

@@ -63,6 +63,7 @@ export class RecentChangesAnnotationProvider extends AnnotationProviderBase {
 
                     if (cfg.hovers.annotations.changes) {
                         message = Annotations.getHoverDiffMessage(commit, this._uri, line);
+                        if (message === undefined) continue;
                     }
                 }