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-rw-r--r--testing/asserts.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/testing/asserts.ts b/testing/asserts.ts
index 83fa7c8e5..a2583c22a 100644
--- a/testing/asserts.ts
+++ b/testing/asserts.ts
@@ -15,7 +15,7 @@ export class AssertionError extends Error {
export function equal(c: unknown, d: unknown): boolean {
const seen = new Map();
- return (function compare(a: unknown, b: unknown) {
+ return (function compare(a: unknown, b: unknown): boolean {
if (a && a instanceof Set && b && b instanceof Set) {
if (a.size !== b.size) {
return false;