fast-extract/dist/esm/extname.js

Extract contents from various archive types (tar, tar.bz2, tar.gz, tar.xz, tgz, zip)

import path from 'path';
export default function extname(fullPath) {
    const basename = path.basename(fullPath);
    const index = basename.indexOf('.');
    return index >= 0 ? basename.slice(index) : '';
}