fix: contains and doesntContain resulting in wrong values

The function parameters have been changed to optional and argument handling has been adjusted to only consider defined arguments. This improves function flexibility and clarity since it makes the function's behavior more predictable with variable argument amounts.

src/collection.ts

@@ -121,8 +121,9 @@ export class Collection<K extends CollectionKeyType = string, V = unknown> imple
    * @param  value
    * @return boolean
    */
-  public contains(key: ((value: V, key: K) => boolean) | V | K, operator: any = null, value: any = null): boolean {
-    if (arguments.length === 1) {
+  public contains(key: ((value: V, key: K) => boolean) | V | K, operator?: any, value?: any): boolean {
+    const args = [...arguments].filter(arg => arg !== undefined)
+    if (args.length === 1) {
       if (typeof key === 'function') {
         let placeholder = {};
 
@@ -133,7 +134,7 @@ export class Collection<K extends CollectionKeyType = string, V = unknown> imple
     }
 
     // @ts-expect-error
-    return this.contains(this.operatorForWhere.apply(this, arguments));
+    return this.contains(this.operatorForWhere.apply(this, args));
   }
 
   public containsOneItem() {
@@ -216,7 +217,7 @@ export class Collection<K extends CollectionKeyType = string, V = unknown> imple
    * @param value
    * @param item {(value, key) => boolean} Predicate to test every entry
    */
-  public doesntContain(item: ((value: V, key: K) => boolean) | V | K, operator: any = null, value: any = null) {
+  public doesntContain(item: ((value: V, key: K) => boolean) | V | K, operator?: any, value?: any) {
     return !this.contains(item, operator, value);
   }