Generate required AMP script based on the component HTML

HTML-to-AMP-script.js

const AMP_SCRIPTS = {
    "apester-media":    "https://cdn.ampproject.org/v0/amp-apester-media-0.1.js",
    "iframely":         "https://cdn.ampproject.org/v0/amp-iframely-0.1.js",
    "iframe":           "https://cdn.ampproject.org/v0/amp-iframe-0.1.js",
    "youtube":          "https://cdn.ampproject.org/v0/amp-youtube-1.0.js"
};

function getScript(html) {
    const m = html && html.match(/^<amp-([a-z\-]+)/);
    if (m) {
        const component = m[1];
        if (component in AMP_SCRIPTS) {
            return `<script async custom-element="amp-${ component }" src="${ AMP_SCRIPTS[component] }"></script>`;
        } else {
            return `<script async custom-element="amp-${ component }" src="https://cdn.ampproject.org/v0/amp-${ component }-0.1.js"></script>\n`;
        }
    }
}