fastwalk function is slow because of walking the excluded directories #40
Description
The library still tries to read the excluded directory using the fastwalk function.
sources:
["node_modules/**/*", "**/*.js"]I have done some profiling on my fork of go-task, and here is the result. As you see, it reads the whole node_modules directory, which takes 70 seconds.
Mirrored from go-task/task#225 (comment)