express #express

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var Busboy = require('busboy');

var busboy = new Busboy({ headers: req.headers });
        return new Promise((resolve) => {
            busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
                const buffers = [];
                file.on('data', function(data) {
                    buffers.push(data);
                });
                file.on('end', () => {
                    co(function* () {
                        const result = yield client.put(`${userid}/${uuidv3(filename, uuidv3.DNS)}-${filename}`, Buffer.concat(buffers));
                        resolve({
                            url: result.url,
                            name: result.name
                        });
                    });
                });
            });
            busboy.on('field', function(fieldname, val, fieldnameTruncated, valTruncated, encoding, mimetype) {
                console.log('Field [' + fieldname + ']: value: ');
            });
            req.pipe(busboy);
        })