Use _isFull instead of duplicating clients check (#2539)
Use _isFull instead of duplicating clients check (#2539)

Noticed that options.max is compared against client count directly, but there's a method wrapping it. I can't see any reason to duplicate it? And using _isFull means I can override that for the adaptive pooling idea I'm exploring :)
brianc/node-postgres,brianc/node-postgres