chore(common): PAYPAL-4550 added ability to reload script by passing an addition parameter

Author: bc-nick

src/script-loader.spec.ts

@@ -62,6 +62,14 @@ describe('ScriptLoader', () => {
                 .toEqual(false);
         });
 
+        it('reload existing script', async () => {
+            await loader.loadScript('https://code.jquery.com/jquery-3.2.1.min.js');
+            await loader.loadScript('https://code.jquery.com/jquery-3.2.1.min.js', undefined, true);
+
+            expect(document.body.appendChild)
+                .toHaveBeenCalledTimes(2);
+        });
+
         it('resolves promise if script is loaded', async () => {
             const output = await loader.loadScript('https://code.jquery.com/jquery-3.2.1.min.js');
 

src/script-loader.ts

@@ -27,8 +27,8 @@ export default class ScriptLoader {
         private _requestSender: RequestSender
     ) {}
 
-    loadScript(src: string, options?: LoadScriptOptions): Promise<void> {
-        if (!this._scripts[src]) {
+    loadScript(src: string, options?: LoadScriptOptions, reloadScript?: boolean): Promise<void> {
+        if (!this._scripts[src] || !!this._scripts[src] && reloadScript) {
             this._scripts[src] = new Promise((resolve, reject) => {
                 const script = document.createElement('script') as LegacyHTMLScriptElement;
                 const { async = false, attributes = {} } = options || {};