@catamphetamine/id3js/lib/image/getImageDataUrl.js

A modern ID3 parser written completely in JavaScript, making use of typed arrays and the HTML5 File API

import getBlobDataUrl from './getBlobDataUrl.js';
/**
 * @param {ID3Tag} tags ID3 tags
 * @param {number} [index] Image index
 * @return {Promise<string | null>}
 */
export function getImageDataUrl(tags, index = 0) {
    if (instanceOfID3TagV2(tags)) {
        // const image: ImageValue = tags.images[index];
        const image = tags.images[index];
        if (image && image.data) {
            return getBlobDataUrl(new Blob([image.data]), { contentType: image.mime });
        }
    }
    return Promise.resolve(null);
}
/**
 * @param {ID3Tag} tags ID3 tags
 * @return {boolean}
 */
function instanceOfID3TagV2(tags) {
    return 'images' in tags;
}