MODULES: lib1, main

STEP 0..1:
    libs: lib1, main
    dirty js: lib1, main
STEP 2:
    libs: lib1, main
    dirty js: lib1
STEP 3:
    libs: lib1, main
    dirty js: lib1, main
STEP 4:
    libs: lib1, main
    dirty js: lib1
STEP 5:
    libs: lib1, main
    dirty js: lib1, main
STEP 6:
    libs: lib1, main
    dirty js: lib1