Enable running tests with specific filter conditions: Example: compile and run only tests on objectwrap.cc and objectwrap.js npm run test --filter=objectwrap Wildcards are also possible: Example: compile and run all tests files ending with reference -> function_reference.cc object_reference.cc reference.cc npm run test --filter=*reference Multiple filter conditions are also allowed Example: compile and run all tests under folders threadsafe_function and typed_threadsafe_function and also the objectwrap.cc file npm run test --filter='*function objectwrap'