Bun crashes when type is missing in import using bun:test

[Erwin-Goossen]

How can we reproduce the crash?

What version of Bun is running?

1.1.38

What platform is your computer?

macOS 14.6.1 (23G93)

What steps can reproduce the bug?

Run this minimal test

import { Mock } from 'bun:test';

describe('Login X', () => {
  it('should render an accessible Login component with text', async () => {
    expect(true).toBe(true);
  });

Running this test will result in the next output in the console:

bun test v1.1.38 (bf2f153f)

src/components/LoginButton/LoginX.spec.tsx:
============================================================
Bun v1.1.38 (bf2f153f) macOS Silicon
macOS v14.6.1
Args: "bun" "test" "/<PATH_TO_PROJECT>/src/components/LoginButton/LoginX.spec.tsx" "-t" "Login X"
Features: bunfig jsc transpiler_cache(11) tsconfig(3) 
Builtins: "node:buffer" "node:child_process" "node:crypto" "node:fs" "node:http" "node:https" "node:net" "node:os" "node:perf_hooks" "node:stream" "node:stream/web" "node:string_decoder" "node:tty" "node:url" "node:util" "node:util/types" "node:vm" "node:zlib" 
Elapsed: 240ms | User: 312ms | Sys: 77ms
RSS: 0.16GB | Peak: 0.16GB | Commit: 0.90GB | Faults: 54

panic(main thread): Segmentation fault at address 0xBD
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:

While running it like this, with type in front of Mock:

import { type Mock } from 'bun:test';

describe('Login X', () => {
  it('should render an accessible Login component with text', async () => {
    expect(true).toBe(true);
  });

it succeeds with success

Expected behaviour

When an import does not work (for whatever reason), return a proper message and do not crach

Relevant log output

Stack Trace (bun.report)

Bun v1.1.38 (bf2f153) on macos aarch64 [TestCommand]

Segmentation fault at address 0x000000BD

• 3 unknown/js code
• llint_entry
• vmEntryToJavaScript
• JSC::Interpreter::executeModuleProgram
• JSC::JSModuleRecord::evaluate
• JSC::JSModuleLoader::evaluate

Features: bunfig, jsc, transpiler_cache, tsconfig

_{Sentry Issue: BUN-3NN}

[github-actions]

@Erwin-Goossen, the latest version of Bun is v1.1.41, but this crash was reported on Bun v1.1.38.

Are you able to reproduce this crash on the latest version of Bun?

bun upgrade

[Erwin-Goossen]

Also crashing with v1.1.42