isaacs/node-lru-cache — pull request #10 by TooTallNate (2012-09-04 22:56:19+00:00)
Title: call "dispose()" on objects that fall off the cache because they're too big

This case could be detected manually by checking for a `false` return value,
but it seems to me that there'd be no case where you wouldn't want to call the
"dispose" function when this happens.