diff --git a/src/git/models/branch.ts b/src/git/models/branch.ts
index 55844d5..c3cf610 100644
--- a/src/git/models/branch.ts
+++ b/src/git/models/branch.ts
@@ -155,13 +155,9 @@ export class GitBranch implements GitBranchReference {
 		return this.detached ? this.sha! : this.name;
 	}
 
-	@memoize<GitBranch['formatDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<GitBranch['formatDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatDate(format?: string | null): string {
-		if (format == null) {
-			format = 'MMMM Do, YYYY h:mma';
-		}
-
-		return this.date != null ? formatDate(this.date, format) : '';
+		return this.date != null ? formatDate(this.date, format ?? 'MMMM Do, YYYY h:mma') : '';
 	}
 
 	formatDateFromNow(): string {
diff --git a/src/git/models/commit.ts b/src/git/models/commit.ts
index 7bf9dfc..93fa437 100644
--- a/src/git/models/commit.ts
+++ b/src/git/models/commit.ts
@@ -483,16 +483,12 @@ export class GitCommitIdentity {
 		private readonly avatarUrl?: string | undefined,
 	) {}
 
-	@memoize<GitCommitIdentity['formatDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
-	formatDate(format?: string | null) {
-		if (format == null) {
-			format = 'MMMM Do, YYYY h:mma';
-		}
-
-		return formatDate(this.date, format);
+	@memoize<GitCommitIdentity['formatDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
+	formatDate(format?: string | null): string {
+		return formatDate(this.date, format ?? 'MMMM Do, YYYY h:mma');
 	}
 
-	fromNow(short?: boolean) {
+	fromNow(short?: boolean): string {
 		return fromNow(this.date, short);
 	}
 
diff --git a/src/git/models/pullRequest.ts b/src/git/models/pullRequest.ts
index aa4a70b..6ac0336 100644
--- a/src/git/models/pullRequest.ts
+++ b/src/git/models/pullRequest.ts
@@ -80,7 +80,7 @@ export class PullRequest {
 			: this.formatDateFromNow();
 	}
 
-	@memoize<PullRequest['formatDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<PullRequest['formatDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatDate(format?: string | null) {
 		return formatDate(this.mergedDate ?? this.closedDate ?? this.date, format ?? 'MMMM Do, YYYY h:mma');
 	}
@@ -89,7 +89,7 @@ export class PullRequest {
 		return fromNow(this.mergedDate ?? this.closedDate ?? this.date);
 	}
 
-	@memoize<PullRequest['formatClosedDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<PullRequest['formatClosedDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatClosedDate(format?: string | null) {
 		if (this.closedDate == null) return '';
 		return formatDate(this.closedDate, format ?? 'MMMM Do, YYYY h:mma');
@@ -100,7 +100,7 @@ export class PullRequest {
 		return fromNow(this.closedDate);
 	}
 
-	@memoize<PullRequest['formatMergedDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<PullRequest['formatMergedDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatMergedDate(format?: string | null) {
 		if (this.mergedDate == null) return '';
 		return formatDate(this.mergedDate, format ?? 'MMMM Do, YYYY h:mma') ?? '';
@@ -111,7 +111,7 @@ export class PullRequest {
 		return fromNow(this.mergedDate);
 	}
 
-	@memoize<PullRequest['formatUpdatedDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<PullRequest['formatUpdatedDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatUpdatedDate(format?: string | null) {
 		return formatDate(this.date, format ?? 'MMMM Do, YYYY h:mma') ?? '';
 	}
diff --git a/src/git/models/reflog.ts b/src/git/models/reflog.ts
index 8dad1f5..eebe46e 100644
--- a/src/git/models/reflog.ts
+++ b/src/git/models/reflog.ts
@@ -28,7 +28,7 @@ export class GitReflogRecord {
 		public readonly details: string | undefined,
 	) {}
 
-	@memoize<GitReflogRecord['formatDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<GitReflogRecord['formatDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatDate(format?: string | null) {
 		return formatDate(this.date, format ?? 'MMMM Do, YYYY h:mma');
 	}
diff --git a/src/git/models/tag.ts b/src/git/models/tag.ts
index 54e33be..8745820 100644
--- a/src/git/models/tag.ts
+++ b/src/git/models/tag.ts
@@ -65,7 +65,7 @@ export class GitTag implements GitTagReference {
 		return this.name;
 	}
 
-	@memoize<GitTag['formatCommitDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<GitTag['formatCommitDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatCommitDate(format?: string | null) {
 		return this.commitDate != null ? formatDate(this.commitDate, format ?? 'MMMM Do, YYYY h:mma') : '';
 	}
@@ -74,7 +74,7 @@ export class GitTag implements GitTagReference {
 		return this.commitDate != null ? fromNow(this.commitDate) : '';
 	}
 
-	@memoize<GitTag['formatDate']>(format => (format == null ? 'MMMM Do, YYYY h:mma' : format))
+	@memoize<GitTag['formatDate']>(format => format ?? 'MMMM Do, YYYY h:mma')
 	formatDate(format?: string | null) {
 		return formatDate(this.date, format ?? 'MMMM Do, YYYY h:mma');
 	}