feat(assert): add options parameter to AssertionError constructor

assert/assertion_error.ts

@@ -8,16 +8,24 @@
  * ```ts no-eval
  * import { AssertionError } from "@std/assert";
  *
- * throw new AssertionError("Assertion failed");
+ * try {
+ *   throw new AssertionError("foo", { cause: "bar" });
+ * } catch (error) {
+ *   if (error instanceof AssertionError) {
+ *     error.message === "foo"; // true
+ *     error.cause === "bar"; // true
+ *   }
+ * }
  * ```
  */
 export class AssertionError extends Error {
   /** Constructs a new instance.
    *
    * @param message The error message.
+   * @param options Additional options.
    */
-  constructor(message: string) {
-    super(message);
+  constructor(message: string, options?: ErrorOptions) {
+    super(message, options);
     this.name = "AssertionError";
   }
 }

assert/assertion_error_test.ts

@@ -0,0 +1,8 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import { assertEquals, AssertionError, assertIsError } from "./mod.ts";
+
+Deno.test("AssertionError", () => {
+  const error = new AssertionError("foo", { cause: { bar: "baz" } });
+  assertIsError(error, AssertionError, "foo");
+  assertEquals(error.cause, { bar: "baz" });
+});