progress

server/src/core/extensions/array.ts

@@ -1,25 +1,18 @@
-export {};
-
-declare global {
-  interface Array<T> {
-    // @strict: The parameter is determined whether the arrays must be exactly the same in content and order of this relationship or simply follow the same requirements.
-    equals(array: Array<T>, strict: boolean): boolean;
-  }
-}
-
-export const ArrayEquals = () => {
-  if ([].equals == undefined) {
+/* eslint-disable @typescript-eslint/no-this-alias */
+export const ArrayExtensions = () => {
+  if ([].equals === undefined) {
+    // eslint-disable-next-line no-extend-native
     Array.prototype.equals = function (array, strict = true) {
       if (!array) return false;
 
-      if (arguments.length == 1) strict = true;
+      if (arguments.length === 1) strict = true;
 
-      if (this.length != array.length) return false;
+      if (this.length !== array.length) return false;
 
       for (let i = 0; i < this.length; i++) {
         if (this[i] instanceof Array && array[i] instanceof Array) {
           if (!this[i].equals(array[i], strict)) return false;
-        } else if (strict && this[i] != array[i]) {
+        } else if (strict && this[i] !== array[i]) {
           return false;
         } else if (!strict) {
           return this.sort().equals(array.sort(), true);
@@ -28,4 +21,27 @@ export const ArrayEquals = () => {
       return true;
     };
   }
+  if ([].lastElement === undefined) {
+    // eslint-disable-next-line no-extend-native
+    Array.prototype.lastElement = function () {
+      const instanceCheck = this;
+      if (instanceCheck === undefined) {
+        return undefined;
+      } else {
+        const instance = instanceCheck as [];
+        return instance[instance.length - 1];
+      }
+    };
+  }
+  if ([].isEmpty === undefined) {
+    // eslint-disable-next-line no-extend-native
+    Array.prototype.isEmpty = function () {
+      return this.length === 0;
+    };
+  }
+  if ([].isNotEmpty === undefined) {
+    Array.prototype.isNotEmpty = function () {
+      return this.length !== 0;
+    };
+  }
 };