diff --git a/src/core/service/api/media/recorder.js b/src/core/service/api/media/recorder.js
index cedf00b2e4b08977553bafa2ef5c0ad8a6078ae6..4ecc2ffad2a2ef5a5bcd794e1d0261dc9e9e1556 100644
--- a/src/core/service/api/media/recorder.js
+++ b/src/core/service/api/media/recorder.js
@@ -1,77 +1,76 @@
-import {
-  onMethod,
-  invokeMethod
-} from '../../platform'
-
-const callbacks = {
-  pause: [],
-  resume: [],
-  start: [],
-  stop: []
-}
-
-class RecorderManager {
-  constructor () {
-    callbacks =
-      onMethod('onRecorderStateChange', res => {
-        const state = res.state
-        delete res.state
-        delete res.errMsg
-        callbacks[state].forEach(callback => {
-          if (typeof callback === 'function') {
-            callback(res)
-          }
-        })
-      })
-  }
-  onError (callback) {
-    callbacks.error.push(callback)
-  }
-  onFrameRecorded (callback) {
-
-  }
-  onInterruptionBegin (callback) {
-
-  }
-  onInterruptionEnd (callback) {
-
-  }
-  onPause (callback) {
-    callbacks.pause.push(callback)
-  }
-  onResume (callback) {
-    callbacks.resume.push(callback)
-  }
-  onStart (callback) {
-    callbacks.start.push(callback)
-  }
-  onStop (callback) {
-    callbacks.stop.push(callback)
-  }
-  pause () {
-    invokeMethod('operateRecorder', {
-      operationType: 'pause'
-    })
-  }
-  resume () {
-    invokeMethod('operateRecorder', {
-      operationType: 'resume'
-    })
-  }
-  start (options) {
-    invokeMethod('operateRecorder', Object.assign({}, options, {
-      operationType: 'start'
-    }))
-  }
-  stop () {
-    invokeMethod('operateRecorder', {
-      operationType: 'stop'
-    })
-  }
-}
-
-let recorderManager
-
-export function getRecorderManager () {
-  return recorderManager || (recorderManager = new RecorderManager())
+import {
+  onMethod,
+  invokeMethod
+} from '../../platform'
+
+const callbacks = {
+  pause: [],
+  resume: [],
+  start: [],
+  stop: []
+}
+
+class RecorderManager {
+  constructor () {
+    onMethod('onRecorderStateChange', res => {
+      const state = res.state
+      delete res.state
+      delete res.errMsg
+      callbacks[state].forEach(callback => {
+        if (typeof callback === 'function') {
+          callback(res)
+        }
+      })
+    })
+  }
+  onError (callback) {
+    callbacks.error.push(callback)
+  }
+  onFrameRecorded (callback) {
+
+  }
+  onInterruptionBegin (callback) {
+
+  }
+  onInterruptionEnd (callback) {
+
+  }
+  onPause (callback) {
+    callbacks.pause.push(callback)
+  }
+  onResume (callback) {
+    callbacks.resume.push(callback)
+  }
+  onStart (callback) {
+    callbacks.start.push(callback)
+  }
+  onStop (callback) {
+    callbacks.stop.push(callback)
+  }
+  pause () {
+    invokeMethod('operateRecorder', {
+      operationType: 'pause'
+    })
+  }
+  resume () {
+    invokeMethod('operateRecorder', {
+      operationType: 'resume'
+    })
+  }
+  start (options) {
+    invokeMethod('operateRecorder', Object.assign({}, options, {
+      operationType: 'start'
+    }))
+  }
+  stop () {
+    invokeMethod('operateRecorder', {
+      operationType: 'stop'
+    })
+  }
+}
+
+let recorderManager
+
+export function getRecorderManager () {
+  return recorderManager || (recorderManager = new RecorderManager())
 }