fix(cli/js/error_stack): Expose Error.captureStackTrace (#5254)

1 files changed, 13 insertions, 1 deletions

diff --git a/cli/tests/unit/error_stack_test.ts b/cli/tests/unit/error_stack_test.ts
index eb0a5c0e6..052cb9591 100644
--- a/cli/tests/unit/error_stack_test.ts
+++ b/cli/tests/unit/error_stack_test.ts
@@ -1,5 +1,5 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-import { unitTest, assert } from "./test_util.ts";
+import { assert, assertEquals, unitTest } from "./test_util.ts";
 
 // @ts-expect-error TypeScript (as of 3.7) does not support indexing namespaces by symbol
 const { setPrepareStackTrace } = Deno[Deno.internal];
@@ -96,6 +96,18 @@ unitTest(function prepareStackTrace(): void {
   assert(result.includes(".ts:"), "should remap to something in 'js/'");
 });
 
+unitTest(function captureStackTrace(): void {
+  function foo(): void {
+    const error = new Error();
+    const stack1 = error.stack!;
+    Error.captureStackTrace(error, foo);
+    const stack2 = error.stack!;
+    // stack2 should be stack1 without the first frame.
+    assertEquals(stack2, stack1.replace(/(?<=^[^\n]*\n)[^\n]*\n/, ""));
+  }
+  foo();
+});
+
 unitTest(function applySourceMap(): void {
   const result = Deno.applySourceMap({
     fileName: "CLI_SNAPSHOT.js",