minor refactoring

Author: agracio

Diff for: src/grid.tsx

@@ -2,7 +2,7 @@ import * as React from "react";
 import {GridHeader} from "./gridHeader";
 import {GridBody} from "./gridBody";
 import {GridFooter} from "./gridFooter";
-import {polyfills} from "./plyfills";
+import {polyfills} from "./polyfills";
 
 export interface Column extends ColumnSetting{
     groupIndex?: Readonly<number>

Diff for: src/plyfills.ts renamed to src/polyfills.ts

@@ -38,4 +38,14 @@ export class Utils{
             return obj[key];
         }
     }
+
+    public static stringRandom(chars: number): string{
+        let text = "";
+        let possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+        for( let i = 0; i < chars; i++ )
+            text += possible.charAt(Math.floor(Math.random() * possible.length));
+
+        return text;
+    }
 }