Load javascript file dynamically

load-script.js

 /**
  *
  * @param {String} url scrip url
  * @param {String} id id for script tag
  * @returns promise
  */
 const loadScript = (url, id) => {
   return new Promise((resolve) => {
     const existingScript = document.getElementById(id);
     if (existingScript) resolve(true);
     const script = document.createElement('script');
     script.src = url;
     script.id = id;
     script.type = 'text/javascript';
     script.onload = () => {
       resolve(true);
     };
     script.onerror = () => {
       resolve(false);
     };
     document.body.appendChild(script);
   });
 };
 
 export default loadScript;