fix(expect-puppeteer): return proper error stack traces from matchers #487
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Summary
Currently, errors thrown from matchers have a corrupt stack trace, making it impossible for the developer to tell which line of the test caused the error.
e.g.:
With the fix, the errors look good, with all the stack trace info:
This bug is caused by calling
Error.captureStackTrace
with the wrong 2nd parameter. Unfortunately, sincecreateMatcher
is not part of the stack trace, the entire stack trace is removed.createMatcher
will never be part of the stack trace, the function that should be removed from the trace is the inner function,throwingMatcher
.