const handlers = {};

var onloadOld = onload || (() => {});
onload = () => {
    onloadOld();
    init();
}

function init() {
    for(const k in handlers) {
        for (const n of getNodes(k)) {
            handlers[k](n);
        }
    }
}

function getNodes(scriptType) {
    return Array.from( document.querySelectorAll(`script[type="orep/${scriptType}"]`) ).filter(n => !n.dataset.handled);
}

export function register(scriptType, handler) {
    if (scriptType in handlers)
        throw new Error(`'${scriptType}' is already registered`);
    
    handlers[scriptType] = handler;
}