Install a npm package with udm type only in the browser

npm-browser.js

/**
 * This will return true if the value is some of the items
 * @param {string} pkgName
 * @param {string} functionName
 * @param {function} callback
 */

function npm(pkgName,functionName,callback){
	const http = new XMLHttpRequest();
	const url = "https://unpkg.com/" + pkgName;
		
	const global = window || this;
	http.open("GET",url);
	http.send();
	http.onreadystatechange = function(res){
		 if (http.readyState === XMLHttpRequest.DONE) {
		 	const status = http.status;
		 	switch (status) {
		 		case 200:
	        new Function(http.responseText)()
					const fn = global[functionName];
					
					if (typeof fn !== "function") throw new Error("function name must be valid");
					
	        callback(fn);
		 			break;
	 			case 404:
	      	throw new Error("Package Not Found");
		 		default:
	    		throw new Error("Network Error");
		 	}
		}
	}
}

// Example

npm("sweetalert","swal",(swal)=>{
	swal("asdasd")
})