6 files changed, 24 insertions, 33 deletions
diff --git a/src/content/reducers/addon.js b/src/content/reducers/addon.js
index 8cc5ef1..b881ca0 100644
--- a/src/content/reducers/addon.js
+++ b/src/content/reducers/addon.js
@@ -7,17 +7,14 @@ const defaultState = {
 export default function reducer(state = defaultState, action = {}) {
   switch (action.type) {
   case actions.ADDON_ENABLE:
-    return Object.assign({}, state, {
-      enabled: true,
-    });
+    return { ...state,
+      enabled: true, };
   case actions.ADDON_DISABLE:
-    return Object.assign({}, state, {
-      enabled: false,
-    });
+    return { ...state,
+      enabled: false, };
   case actions.ADDON_TOGGLE_ENABLED:
-    return Object.assign({}, state, {
-      enabled: !state.enabled,
-    });
+    return { ...state,
+      enabled: !state.enabled, };
   default:
     return state;
   }
diff --git a/src/content/reducers/find.js b/src/content/reducers/find.js
index 8d63ee5..4560e2c 100644
--- a/src/content/reducers/find.js
+++ b/src/content/reducers/find.js
@@ -8,10 +8,9 @@ const defaultState = {
 export default function reducer(state = defaultState, action = {}) {
   switch (action.type) {
   case actions.FIND_SET_KEYWORD:
-    return Object.assign({}, state, {
+    return { ...state,
       keyword: action.keyword,
-      found: action.found,
-    });
+      found: action.found, };
   default:
     return state;
   }
diff --git a/src/content/reducers/follow-controller.js b/src/content/reducers/follow-controller.js
index 78fd848..5869c47 100644
--- a/src/content/reducers/follow-controller.js
+++ b/src/content/reducers/follow-controller.js
@@ -10,24 +10,20 @@ const defaultState = {
 export default function reducer(state = defaultState, action = {}) {
   switch (action.type) {
   case actions.FOLLOW_CONTROLLER_ENABLE:
-    return Object.assign({}, state, {
+    return { ...state,
       enabled: true,
       newTab: action.newTab,
       background: action.background,
-      keys: '',
-    });
+      keys: '', };
   case actions.FOLLOW_CONTROLLER_DISABLE:
-    return Object.assign({}, state, {
-      enabled: false,
-    });
+    return { ...state,
+      enabled: false, };
   case actions.FOLLOW_CONTROLLER_KEY_PRESS:
-    return Object.assign({}, state, {
-      keys: state.keys + action.key,
-    });
+    return { ...state,
+      keys: state.keys + action.key, };
   case actions.FOLLOW_CONTROLLER_BACKSPACE:
-    return Object.assign({}, state, {
-      keys: state.keys.slice(0, -1),
-    });
+    return { ...state,
+      keys: state.keys.slice(0, -1), };
   default:
     return state;
   }
diff --git a/src/content/reducers/index.js b/src/content/reducers/index.js
index 2487d85..c3a474e 100644
--- a/src/content/reducers/index.js
+++ b/src/content/reducers/index.js
@@ -14,11 +14,12 @@ const defaultState = {
 };
 
 export default function reducer(state = defaultState, action = {}) {
-  return Object.assign({}, state, {
+  return {
+    ...state,
     addon: addonReducer(state.addon, action),
     find: findReducer(state.find, action),
     setting: settingReducer(state.setting, action),
     input: inputReducer(state.input, action),
     followController: followControllerReducer(state.followController, action),
-  });
+  };
 }
diff --git a/src/content/reducers/input.js b/src/content/reducers/input.js
index 134aa95..23e7dd2 100644
--- a/src/content/reducers/input.js
+++ b/src/content/reducers/input.js
@@ -7,13 +7,11 @@ const defaultState = {
 export default function reducer(state = defaultState, action = {}) {
   switch (action.type) {
   case actions.INPUT_KEY_PRESS:
-    return Object.assign({}, state, {
-      keys: state.keys.concat([action.key]),
-    });
+    return { ...state,
+      keys: state.keys.concat([action.key]), };
   case actions.INPUT_CLEAR_KEYS:
-    return Object.assign({}, state, {
-      keys: [],
-    });
+    return { ...state,
+      keys: [], };
   default:
     return state;
   }
diff --git a/src/content/reducers/setting.js b/src/content/reducers/setting.js
index a23027f..a49db6d 100644
--- a/src/content/reducers/setting.js
+++ b/src/content/reducers/setting.js
@@ -8,7 +8,7 @@ const defaultState = {
 export default function reducer(state = defaultState, action = {}) {
   switch (action.type) {
   case actions.SETTING_SET:
-    return Object.assign({}, action.value);
+    return { ...action.value };
   default:
     return state;
   }