Revert "fix to make lib/lib.js work after a8b516c"

This reverts commit 5c2df13750c3a293e5d165448f6367bbee2574d9.
Revert "avoid collisions in FBL => lib/lib.js (broken)"

This reverts commit a8b516c3c3004f81d491a5e7ed837c354d3de753.
make sure there is no collision in FBL (loop solution)
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