040000 tree be9d53b90bd6f0fc3045184d813239e399c0ed9d	command
040000 tree baec6fabcc9df8575f28de8b6d5694c2ca0220e2	compiler
040000 tree 6242e5caeb5fcb48f49f421f40c428ebd26c5571	js_ast
040000 tree 9c50ee1de7bdf12e4fc616989a4fdb2dd0096d4c	kernel