Cannot leave comments on hunks in large diffs (#6574)

Fixes #6524

Author: alexr00

src/common/diffHunk.ts

@@ -355,7 +355,7 @@ export async function parseDiff(
 			continue;
 		}
 
-		const diffHunks = review.patch ? parsePatch(review.patch) : [];
+		const diffHunks = review.patch ? parsePatch(review.patch) : undefined;
 		fileChanges.push(
 			new InMemFileChange(
 				parentCommit,
@@ -364,7 +364,7 @@ export async function parseDiff(
 				review.previous_filename,
 				review.patch ?? '',
 				diffHunks,
-				review.blob_url,
+				review.blob_url
 			),
 		);
 	}

src/common/file.ts

@@ -30,9 +30,9 @@ export class InMemFileChange implements SimpleFileChange {
 		public readonly fileName: string,
 		public readonly previousFileName: string | undefined,
 		public readonly patch: string,
-		public readonly diffHunks: DiffHunk[],
+		public readonly diffHunks: DiffHunk[] | undefined,
 		public readonly blobUrl: string,
-	) {}
+	) { }
 }
 
 export class SlimFileChange implements SimpleFileChange {
@@ -42,5 +42,5 @@ export class SlimFileChange implements SimpleFileChange {
 		public readonly status: GitChangeType,
 		public readonly fileName: string,
 		public readonly previousFileName: string | undefined,
-	) {}
+	) { }
 }

src/view/fileChangeModel.ts

@@ -51,7 +51,7 @@ export abstract class FileChangeModel {
 	async diffHunks(): Promise<DiffHunk[]> {
 		let diffHunks: DiffHunk[] = [];
 
-		if (this.change instanceof InMemFileChange) {
+		if (this.change instanceof InMemFileChange && this.change.diffHunks) {
 			return this.change.diffHunks;
 		} else if (this.status !== GitChangeType.RENAME) {
 			try {