feat: enhance configuration and options handling with merge functions

lib/core/fluent-url.ts

@@ -1,4 +1,9 @@
-import { normalizeConfig, normalizeOptions } from '@/core/config-defaults'
+import {
+  mergeConfig,
+  mergeOptions,
+  normalizeConfig,
+  normalizeOptions,
+} from '@/core/config-defaults'
 import { deepClone } from '@/shared/helpers/deep-clone'
 import { stringifyUrl } from './serializer/url-serializer'
 
@@ -13,7 +18,7 @@ export class FluentUrl {
 
   constructor(
     urlOrOptions?: Partial<FLuentUrlPlainObject> | string,
-    config?: FluentUrlConfig,
+    config?: Partial<FluentUrlConfig>,
   ) {
     this.config = normalizeConfig(config)
 
@@ -69,18 +74,18 @@ export class FluentUrl {
     config?: FluentUrlConfig,
   ): FluentUrl {
     return new FluentUrl(
-      {
-        protocol: options?.protocol ?? this.protocol,
-        hostname: options?.hostname ?? this.hostname,
-        paths: options?.paths ?? this.paths,
-        port: options?.port ?? this.port,
-        fragment: options?.fragment ?? this.fragment,
-        queries: options?.queries ?? this.queries,
-      },
-      {
-        parseQuery: config?.parseQuery ?? this.config.parseQuery,
-        stringifyQuery: config?.stringifyQuery ?? this.config.stringifyQuery,
-      },
+      mergeOptions(
+        {
+          protocol: this.protocol,
+          hostname: this.hostname,
+          paths: this.paths,
+          port: this.port,
+          fragment: this.fragment,
+          queries: this.queries,
+        },
+        options,
+      ),
+      mergeConfig(this.config, config),
     )
   }
 }