The build-time probe loads island package modules to decide their
deferral. A package can require a file outside node_modules (a program
module it shares, or any project file), and that file evaluated on the
build machine. The probe's resolve hook now throws for a file outside
every node_modules directory before it evaluates, so the module that
asked for it stays eager. This also covers a program module passed to the
probe directly.
Chris Tate
e4bc919aec