[Feature Request] Also allow array of "initialisation" functions! about dynamically-polyfill-features-for-a-script

[willstocks]

See commit b08852a

[willstocks]

#11 sort of caters for this, but there's an issue... the init functions appear to execute before we've gotten the necessary third party scripts (using quicklink() as an example).

One option:
Extract the loadMyScript() function out into a couple of small helper functions:

function loadMyScript(url, functionToRunonLoad) {
	if(Array.isArray(url)) {
		var urlen = url.length;
		for (var u = 0; u < urlen; u++) {	
			var uri = url[u];
			if(uri !== null && uri !== '') {
				nonblankURL(uri).then(function(){initialiseMyScript(functionToRunonLoad)}); 
			}
		}
	} else if (!Array.isArray(url) && url !== null && url !== '') {
		return nonblankURL(url).then(function(){initialiseMyScript(functionToRunonLoad)});
	} else {
		return initialiseMyScript(functionToRunonLoad); //straight to init because no dependency
	}
}
function nonblankURL(uri){
	return new Promise(
		function(resolve, reject) {
			var thescript = document.createElement('script');
			thescript.src = encodeURI(uri);
			document.body.appendChild(thescript);
			thescript.onerror = function(response) {
				return reject("Loading the script failed!", response);
			} 
			thescript.onload = function() {
				return resolve("Script has loaded!");
			} 
		}
	)
}

This would also require refactoring of pageLoaded():

function pageLoaded(polyfillFeatures, scriptToPolyfill, functionToRunonLoad) {
	checkNativeSupport(polyfillFeatures)
		.then(
		function() {
			loadMyScript(scriptToPolyfill, functionToRunonLoad) 
		}
	).catch(function(error){return error})
}

But is this the best route to follow?

[willstocks]

The only problem with the above is that iterating through the arrays requires both to be aligned.

i.e. [Script1, Script2], [initScript1, initScript2]

If a user were to, for instance, order the arrays differently, things would fail because the dependency may not have loaded yet.

i.e. [Script1, Script2], [initScript2, initScript1]

Furthermore, what happens if we:
[Script1, Script2], initScripts

Where initScripts has a dependency on both scripts?

[willstocks]

ONLY GONE AND FOUND A WAY!!!!

Array.forEach()