1) filter() should forward multimatch options:
Uncaught AssertionError [ERR_ASSERTION]: 'nested\\resource.js' == 'nested/resource.js'
+ expected - actual
-nested\resource.js
+nested/resource.js
at StreamFilter.stream.on (test.js:75:11)
at endReadableNT (node_modules\streamfilter\node_modules\readable-stream\lib\_stream_readable.js:992:12)
at _combinedTickCallback (internal/process/next_tick.js:138:11)
at process._tickCallback (internal/process/next_tick.js:180:9)