True when requestPath falls under one of roots with Express mount semantics: case-insensitive, on a path-segment boundary. /ballot matches /ballot, /ballot/ and /ballot/abc, but not /ballots.
requestPath
roots
/ballot
/ballot/
/ballot/abc
/ballots
True when
requestPathfalls under one ofrootswith Express mount semantics: case-insensitive, on a path-segment boundary./ballotmatches/ballot,/ballot/and/ballot/abc, but not/ballots.