change dir stucture

game/Debug.js

@@ -1,25 +0,0 @@
-import { logger } from '../common/Util.js'
-
-const log = logger('Debug.js')
-
-let _pt = 0
-let _mindiff = 0
-
-const checkpoint_start = (mindiff) => {
-  _pt = performance.now()
-  _mindiff = mindiff
-}
-
-const checkpoint = (label) => {
-  const now = performance.now()
-  const diff = now - _pt
-  if (diff > _mindiff) {
-    log.log(label + ': ' + (diff))
-  }
-  _pt = now
-}
-
-export default {
-  checkpoint_start,
-  checkpoint,
-}