fix: validate inputs when passing both async and defer

lib/asset-js.js

@@ -1,7 +1,8 @@
-
-
 import { uriIsRelative, pathnameBuilder } from './utils.js';
-import { buildScriptElement, buildReactScriptAttributes } from './html-utils.js';
+import {
+    buildScriptElement,
+    buildReactScriptAttributes,
+} from './html-utils.js';
 
 const inspect = Symbol.for('nodejs.util.inspect.custom');
 
@@ -29,6 +30,23 @@ export default class PodiumAssetJs {
     #data;
     #strategy;
     #scope;
+
+    /**
+     * @param {object} options
+     * @param {string} [options.referrerpolicy]
+     * @param {string} [options.crossorigin]
+     * @param {string} [options.integrity]
+     * @param {string} [options.pathname]
+     * @param {boolean} [options.nomodule=false]
+     * @param {boolean} [options.prefix=false]
+     * @param {string} [options.value]
+     * @param {boolean} [options.async=false]
+     * @param {boolean} [options.defer=false]
+     * @param {string} [options.type="default"]
+     * @param {array} [options.data]
+     * @param {string} [options.strategy]
+     * @param {string} [options.scope]
+     */
     constructor({
         referrerpolicy = '',
         crossorigin = undefined,
@@ -44,11 +62,12 @@ export default class PodiumAssetJs {
         strategy = undefined,
         scope = undefined,
     } = {}) {
-        if (!toUndefined(value))
+        if (!toUndefined(value)) {
             throw new Error(
                 `Value for argument variable "value", "${value}", is not valid`,
             );
-
+        }
+
         this.#pathname = pathname;
         this.#prefix = prefix;
         this.#value = value;
@@ -57,8 +76,15 @@ export default class PodiumAssetJs {
         this.#crossorigin = crossorigin;
         this.#integrity = integrity;
         this.#nomodule = nomodule;
-        this.#async = async;
-        this.#defer = defer;
+
+        if (async && defer) {
+            this.#async = false;
+            this.#defer = true;
+        } else {
+            this.#async = async;
+            this.#defer = defer;
+        }
+
         this.#type = type;
         this.#data = data;
         this.#strategy = strategy;
@@ -148,15 +174,15 @@ export default class PodiumAssetJs {
     }
 
     get strategy() {
-      return this.#strategy;
+        return this.#strategy;
     }
 
     set strategy(value) {
         this.#strategy = value;
     }
 
     get scope() {
-      return this.#scope;
+        return this.#scope;
     }
 
     set scope(value) {
@@ -204,4 +230,4 @@ export default class PodiumAssetJs {
     get [Symbol.toStringTag]() {
         return 'PodiumAssetJs';
     }
-};
+}