MODULES: lib1, main

STEP 0..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
STEP 7:
    libs: lib1, main
    dirty js: lib1, main
STEP 8:
    libs: lib1, main
    dirty js: lib1
STEP 9..10:
    libs: lib1, main
    dirty js: lib1, main