If you are making helper functions, you should instead make a file that exports functions like this:

export function MyHelperFunc_1() {

}

export function MyHelperFunc_2() {

}

Then import them like so:

import { MyHelperFunc_1 } from ‘./helpers’

If you want to create a helper function that accepts a callback, you can do it like this:

export function MyHelperFunc_1(data, callback) {
	let response = do_ajax(data);
	if( response.status == 1 ){
		callback(response); // pass the response
	}
}

Then use it like this:

MyHelperFunc_1(my_data, function(response){
	alert(response.message); // display the response
});