@nichoth/image/dist/srcset.js

An image component

export const defaultSizes = [1024, 768, 480];
export function defaultSrcset(filename) {
    const URIs = getSrcset(filename, defaultSizes);
    return URIs;
}
export function getSrcset(filename, sizes) {
    // return filenames like `file-480.jpg`
    return sizes.map(n => {
        return getSrcsetItem(filename, n);
    }).join(', ');
}
export function getSrcsetItem(filename, n) {
    const fileParts = filename.split('.');
    const ext = fileParts.pop();
    const noExt = fileParts.join('.');
    return noExt + `-${n}.${ext} ${n}w`;
}
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