Tests failing

Hi!
Maybe I've done something wrong, but I've tried building this from source and running the tests, but they're both failing:
```
$ nyc mocha

make error cause
1) should render the cause
2) should render extra properties in the full stack

0 passing (13ms)
2 failing

1) make error cause
should render the cause:

AssertionError: expected 'TestError: test boom!\n at Context…' to equal 'TestError: test boom!\n at Context…'
+ expected - actual

TestError: test boom!
at Context. (/home/jdg/debian/spyder-packages/jupyter-notebook/make-error-cause/node-make-error-cause-2.3.0/src/index.spec.ts:12:23)
at callFn (/usr/share/nodejs/mocha/lib/runnable.js:364:21)
- ... 7 lines matching cause stack trace ...
- at processImmediate (node:internal/timers:483:21) {
- [cause]: Error: boom!
- at Context. (/home/jdg/debian/spyder-packages/jupyter-notebook/make-error-cause/node-make-error-cause-2.3.0/src/index.spec.ts:11:19)
- at callFn (/usr/share/nodejs/mocha/lib/runnable.js:364:21)
- at Test.Runnable.run (/usr/share/nodejs/mocha/lib/runnable.js:352:5)
- at Runner.runTest (/usr/share/nodejs/mocha/lib/runner.js:677:10)
- at /usr/share/nodejs/mocha/lib/runner.js:800:12
- at next (/usr/share/nodejs/mocha/lib/runner.js:592:14)
- at /usr/share/nodejs/mocha/lib/runner.js:602:7
- at next (/usr/share/nodejs/mocha/lib/runner.js:485:14)
- at Immediate._onImmediate (/usr/share/nodejs/mocha/lib/runner.js:570:5)
- at processImmediate (node:internal/timers:483:21)
-}
+ at Test.Runnable.run (/usr/share/nodejs/mocha/lib/runnable.js:352:5)
+ at Runner.runTest (/usr/share/nodejs/mocha/lib/runner.js:677:10)
+ at /usr/share/nodejs/mocha/lib/runner.js:800:12
+ at next (/usr/share/nodejs/mocha/lib/runner.js:592:14)
+ at /usr/share/nodejs/mocha/lib/runner.js:602:7
+ at next (/usr/share/nodejs/mocha/lib/runner.js:485:14)
+ at Immediate._onImmediate (/usr/share/nodejs/mocha/lib/runner.js:570:5)
+ at processImmediate (node:internal/timers:483:21)

The following exception was the direct cause of the above exception:

Error: boom!

at Context. (src/index.spec.ts:19:37)
at callFn (/usr/share/nodejs/mocha/lib/runnable.js:364:21)
at Test.Runnable.run (/usr/share/nodejs/mocha/lib/runnable.js:352:5)
at Runner.runTest (/usr/share/nodejs/mocha/lib/runner.js:677:10)
at /usr/share/nodejs/mocha/lib/runner.js:800:12
at next (/usr/share/nodejs/mocha/lib/runner.js:592:14)
at /usr/share/nodejs/mocha/lib/runner.js:602:7
at next (/usr/share/nodejs/mocha/lib/runner.js:485:14)
at Immediate._onImmediate (/usr/share/nodejs/mocha/lib/runner.js:570:5)
at processImmediate (node:internal/timers:483:21)

2) make error cause
should render extra properties in the full stack:
AssertionError: expected 'TestDataError: test boom!\n at Con…' to include 'TestDataError: test boom!\n at Con…'
at Context. (src/index.spec.ts:58:15)
at callFn (/usr/share/nodejs/mocha/lib/runnable.js:364:21)
at Test.Runnable.run (/usr/share/nodejs/mocha/lib/runnable.js:352:5)
at Runner.runTest (/usr/share/nodejs/mocha/lib/runner.js:677:10)
at /usr/share/nodejs/mocha/lib/runner.js:800:12
at next (/usr/share/nodejs/mocha/lib/runner.js:592:14)
at /usr/share/nodejs/mocha/lib/runner.js:602:7
at next (/usr/share/nodejs/mocha/lib/runner.js:485:14)
at Immediate._onImmediate (/usr/share/nodejs/mocha/lib/runner.js:570:5)
at processImmediate (node:internal/timers:483:21)

```
I wonder whether it's because make-error has changed its behaviour or something like that?