replace String.random with randomstring

packages/utils/lib/common.ts

@@ -1,15 +1,9 @@
 declare global {
-    interface StringConstructor {
-        random: (digit?: number, dict?: string) => string;
-    }
     interface String {
         format: (...args: Array<any>) => string;
         formatFromArray: (args: any[]) => string;
         rawformat: (object: any) => string;
     }
-    interface ArrayConstructor {
-        isDiff: (a: any[], b: any[]) => boolean;
-    }
     interface Math {
         sum: (...args: Array<number[] | number>) => number;
     }
@@ -28,6 +22,7 @@ export function randomstring(digit = 32, dict = defaultDict) {
     return str;
 }
 try {
+    // @ts-ignore
     String.random = randomstring;
 } catch (e) { } // Cannot add property random, object is not extensible
 
@@ -63,7 +58,7 @@ String.prototype.rawformat = function rawFormat(object) {
     return [res[0], object, res[1]].join();
 };
 
-Array.isDiff = function isDiff(a, b) {
+export function diffArray(a, b) {
     if (a.length !== b.length) return true;
     a.sort();
     b.sort();
@@ -71,7 +66,12 @@ Array.isDiff = function isDiff(a, b) {
         if (a[i] !== b[i]) return true;
     }
     return false;
-};
+}
+
+try {
+    // @ts-ignore
+    Array.isDiff = diffArray;
+} catch (e) { } // Cannot add property isDiff, object is not extensible
 
 // @ts-ignore
 Date.prototype.format = function formatDate(fmt = '%Y-%m-%d %H:%M:%S') {