mochajs / mocha / 5517 / 7

94%

main: 94%

push

travis-ci

Fix regexp in utils.stackTraceFilter to prevent ReDoS #3416 (#3686)

When the stacktrace begins with a large `Error.message` (single or multi line), Mocha's stack prettifier method (enabled by default) takes a long time to finish due to its regular expression. Certain assertions (e.g., `contains`, `deeplyEqual`) against large objects can trigger this problem.
This PR alters the RegExp to skip over the error message portion of the stacktrace.

948 of 1145 branches covered (82.79%)

2453 of 2692 relevant lines covered (91.12%)

592.32 hits per line