などからscrapboxにscriptを読み込むための関数

export const installCDN = ({id, src, module = false} = {}) => new Promise((resolve, reject) => {
    const oldScript = document.getElementById(id);
    oldScript?.parentNode.removeChild(oldScript);
    
    const script = document.createElement("script");
    script.addEventListener('load', () => resolve());
    script.addEventListener('error', ev => reject(ev));
    script.src = src;
    script.id = id;
    if (module) { script.type = 'module'; }
    
    document.head.appendChild(script);
});