npm install fast-down

fast-down "http://xxx/big-file.zip" big-file.zip 4

const fast_down = require('fast-down');

(async() => {
        var url = 'http://bla..../file.mp4';
        var filepath = 'filename.mp4';
        var con_num = 4;

        let stime = new Date().getTime();
        console.log('start download, concurrency: ' + con_num);

        var downloader = new fast_down.Downloader(url, filepath, {
            'concurrency': con_num,
            'progress_throttle': 4000,
            "headers":{
		"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.87 Safari/537.36",
		"Referer":"https://www.bilibili.com/",
		"Origin": "https://www.bilibili.com"
		}
        });

        downloader.onProgress((pct, tinfo, pinfo) => {
            console.log('progress:',pct);
        });

        let ret = await downloader.download();

        console.log('download ' + (ret ? 'success' : 'fail') + ', cost: ' + (new Date().getTime() - stime) + 'ms');
})();