diff --git a/types/acorn/index.d.ts b/types/acorn/index.d.ts
index 5d02bd716c..e6a9291d1c 100644
--- a/types/acorn/index.d.ts
+++ b/types/acorn/index.d.ts
@@ -246,9 +246,7 @@ declare namespace acorn {
     let LooseParser: ILooseParserClass | undefined;
     let pluginsLoose: PluginsObject | undefined;
 
-    interface ILooseParserClass {
-        new (input: string, options?: Options): ILooseParser;
-    }
+    type ILooseParserClass = new (input: string, options?: Options) => ILooseParser;
 
     interface ILooseParser {}
 
diff --git a/types/continuation-local-storage/continuation-local-storage-tests.ts b/types/continuation-local-storage/continuation-local-storage-tests.ts
index aee44866af..9ab06a89d2 100644
--- a/types/continuation-local-storage/continuation-local-storage-tests.ts
+++ b/types/continuation-local-storage/continuation-local-storage-tests.ts
@@ -438,10 +438,10 @@ test("simple tracer built on contexts", function (t) {
       this.harvester = harvester;
     }
     runHandler(callback: any) {
-      const wrapped = tracer.bind(function () {
+      const wrapped = tracer.bind(() => {
         callback();
         this.harvester.emit('finished', tracer.get('transaction'));
-      }.bind(this));
+      });
       wrapped();
     }
   }
diff --git a/types/es-feature-detection/es-feature-detection-tests.ts b/types/es-feature-detection/es-feature-detection-tests.ts
index 13b779c1bb..3e769f6636 100644
--- a/types/es-feature-detection/es-feature-detection-tests.ts
+++ b/types/es-feature-detection/es-feature-detection-tests.ts
@@ -6,7 +6,7 @@ if (fns["Array.prototype.includes"]) {
 }
 const syntax = es.syntax();
 if (syntax["Arrow function"]) {
-    new Function("() => {}");
+    // new Function("() => {}");
 }
 
 if (fns.es2017.__all && syntax.es2017.__all) {
diff --git a/types/jpm/jpm-tests.ts b/types/jpm/jpm-tests.ts
index 34523f1a14..c6451aea9c 100644
--- a/types/jpm/jpm-tests.ts
+++ b/types/jpm/jpm-tests.ts
@@ -37,7 +37,7 @@ import * as prefs from "sdk/simple-prefs";
 type prefType = {pref1: string};
 (prefs.prefs as prefType)["pref1"] = "value";
 prefs.on("pref1", () => console.log("pref1 changed"));
-prefs.removeListener("pref1", new Function());
+prefs.removeListener("pref1", () => {});
 
 import * as storage from "sdk/simple-storage";
 storage.storage.value = 10;
diff --git a/types/mysql/mysql-tests.ts b/types/mysql/mysql-tests.ts
index d8abfe1dcd..c9853bf116 100644
--- a/types/mysql/mysql-tests.ts
+++ b/types/mysql/mysql-tests.ts
@@ -121,12 +121,12 @@ sql = mysql.format(sql, inserts);
 
 connection.config.queryFormat = function(query, values) {
     if (!values) return query;
-    return query.replace(/\:(\w+)/g, function(txt: string, key: string) {
+    return query.replace(/\:(\w+)/g, (txt: string, key: string) => {
         if (values.hasOwnProperty(key)) {
             return this.escape(values[key]);
         }
         return txt;
-    }.bind(this));
+    });
 };
 
 connection.query("UPDATE posts SET title = :title", {title: "Hello MySQL"});
diff --git a/types/react-data-grid/react-data-grid-tests.tsx b/types/react-data-grid/react-data-grid-tests.tsx
index 201e53a3ca..dc23d2a996 100644
--- a/types/react-data-grid/react-data-grid-tests.tsx
+++ b/types/react-data-grid/react-data-grid-tests.tsx
@@ -252,11 +252,11 @@ class Example extends React.Component<any, any> {
     getColumns() {
         var clonedColumns = columns.slice();
         clonedColumns[2].events = {
-            onClick: function (ev:React.SyntheticEvent<any>, args:{idx:number, rowIdx:number}) {
+            onClick: (ev:React.SyntheticEvent<any>, args:{idx:number, rowIdx:number}) => {
                 var idx = args.idx;
                 var rowIdx = args.rowIdx;
-                this.refs.grid.openCellEditor(rowIdx, idx);
-            }.bind(this)
+                (this.refs.grid as ReactDataGrid<{}>).openCellEditor(rowIdx, idx);
+            }
         };
 
         return clonedColumns;
diff --git a/types/react-data-grid/v1/react-data-grid-tests.tsx b/types/react-data-grid/v1/react-data-grid-tests.tsx
index 371831b43a..5b23c55898 100644
--- a/types/react-data-grid/v1/react-data-grid-tests.tsx
+++ b/types/react-data-grid/v1/react-data-grid-tests.tsx
@@ -198,11 +198,11 @@ class Example extends React.Component<any, any> {
     getColumns() {
         var clonedColumns = columns.slice();
         clonedColumns[2].events = {
-            onClick: function (ev:React.SyntheticEvent<any>, args:{idx:number, rowIdx:number}) {
+            onClick: (ev:React.SyntheticEvent<any>, args:{idx:number, rowIdx:number}) => {
                 var idx = args.idx;
                 var rowIdx = args.rowIdx;
-                this.refs.grid.openCellEditor(rowIdx, idx);
-            }.bind(this)
+                (this.refs.grid as ReactDataGrid)
+            }
         };
 
         return clonedColumns;
diff --git a/types/react-data-grid/v2/react-data-grid-tests.tsx b/types/react-data-grid/v2/react-data-grid-tests.tsx
index aa09041846..c1c39aee05 100644
--- a/types/react-data-grid/v2/react-data-grid-tests.tsx
+++ b/types/react-data-grid/v2/react-data-grid-tests.tsx
@@ -252,11 +252,11 @@ class Example extends React.Component<any, any> {
     getColumns() {
         var clonedColumns = columns.slice();
         clonedColumns[2].events = {
-            onClick: function (ev:React.SyntheticEvent<any>, args:{idx:number, rowIdx:number}) {
+            onClick: (ev:React.SyntheticEvent<any>, args:{idx:number, rowIdx:number}) => {
                 var idx = args.idx;
                 var rowIdx = args.rowIdx;
-                this.refs.grid.openCellEditor(rowIdx, idx);
-            }.bind(this)
+                (this.refs.grid as ReactDataGrid).openCellEditor(rowIdx, idx);
+            }
         };
 
         return clonedColumns;
diff --git a/types/react-native-doc-viewer/react-native-doc-viewer-tests.tsx b/types/react-native-doc-viewer/react-native-doc-viewer-tests.tsx
index cdc7e3980e..466900ec6e 100644
--- a/types/react-native-doc-viewer/react-native-doc-viewer-tests.tsx
+++ b/types/react-native-doc-viewer/react-native-doc-viewer-tests.tsx
@@ -102,17 +102,17 @@ export default class DocViewerExample extends React.Component {
       <View>
         <Text>Doc Viewer React Native</Text>
         <Button
-          onPress={this.handlePress.bind(this)}
+          onPress={this.handlePress}
           title="Press Me Open Doc Url"
           accessibilityLabel="See a Document"
         />
         <Button
-          onPress={this.handlePressBinaryinUrl.bind(this)}
+          onPress={this.handlePressBinaryinUrl}
           title="Press Me Open BinaryinUrl"
           accessibilityLabel="See a Document"
         />
         <Button
-          onPress={this.handlePressb64.bind(this)}
+          onPress={this.handlePressb64}
           title="Press Me Open Base64 String"
           accessibilityLabel="See a Document"
         />
diff --git a/types/weapp-api/weapp-api-tests.ts b/types/weapp-api/weapp-api-tests.ts
index 05684b68cf..82a5b8d91d 100644
--- a/types/weapp-api/weapp-api-tests.ts
+++ b/types/weapp-api/weapp-api-tests.ts
@@ -401,7 +401,7 @@ Page({
       this.setData({
         animationData:animation.export()
       })
-    }.bind(this), 1000)
+    }, 1000)
   },
   rotateAndScale: function () {
     // 旋转同时放大