[simplebar] Allow SimpleBar to be imported as a module. (#23911)

* [simplebar] Allow SimpleBar to be imported as a module.

* [simplebar] Add missing author.

types/simplebar/index.d.ts

@@ -1,9 +1,12 @@
 // Type definitions for simplebar.js 2.4
 // Project: https://github.com/Grsmto/simplebar
-// Definitions by: Leonard Thieu <https://github.com/leonard-thieu>
+// Definitions by: Gregor Woiwode <https://github.com/gregonnet>, Leonard Thieu <https://github.com/leonard-thieu>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.1
 
+export as namespace SimpleBar;
+export = SimpleBar;
+
 declare class SimpleBar {
     static removeObserver(): void;
 

types/simplebar/test/module-tests.ts

@@ -0,0 +1,4 @@
+import SimpleBar = require('simplebar');
+
+// $ExpectType typeof SimpleBar
+SimpleBar;

types/simplebar/tsconfig.json

@@ -19,6 +19,7 @@
     },
     "files": [
         "index.d.ts",
-        "simplebar-tests.ts"
+        "simplebar-tests.ts",
+        "test/module-tests.ts"
     ]
-}
+}