fix review

Author: winddies

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "qiniu-js",
   "jsName": "qiniu",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "private": false,
   "description": "Javascript SDK for Qiniu Resource (Cloud) Storage AP",
   "main": "lib/index.js",

package.json

@@ -1,6 +1,6 @@
 import Resume from './resume'
 import Direct from './direct'
-import { UploadOptions, UploadHandler, DEFAULT_CHUNK_SIZE } from './base'
+import { UploadOptions, UploadHandler } from './base'
 import StatisticsLogger from '../statisticsLog'
 
 export * from './base'
@@ -15,7 +15,7 @@ export default function createUploadManager(
     return new Direct(options, handlers, statisticsLogger)
   }
 
-  return options.file.size > DEFAULT_CHUNK_SIZE
+  return options.file.size > 4 * 1024 * 1024
     ? new Resume(options, handlers, statisticsLogger)
     : new Direct(options, handlers, statisticsLogger)
 }