Engine 'uglify' not found [требует правки]

node server.js

Error: Engine 'uglify' not found. Refusing to store configuration

const express = require('express');
const parser = require('body-parser');
const app = express();
const technoDoc = require('techno-gendoc');
const mime = require('mime');
const path = require('path');
technoDoc.generate(require('./api'), 'dist');

app.use('/', express.static('dist', { maxAge: 1 }));
app.use('/user', express.static('dist', {maxAge: 1})); //
app.use('/play', express.static('dist', {maxAge: 1})); //
app.use('/scores', express.static('dist', {maxAge: 1})); //
app.use('/rules', express.static('dist', {maxAge: 1})); //
app.use('/profile', express.static('dist', {maxAge: 1})); //
app.use('/about', express.static('dist', {maxAge: 1}));
// app.use('/dist', express.static('dist'));
mime.define({
'application/babylon': ['babylon',],
'application/fx': ['fx',],
'application/babylonmeshdata': ['babylonmeshdata',],
 });
app.use(parser.json());
app.use('/libs', express.static('node_modules'));
app.listen(process.env.PORT || 3001, () => {
console.log(mime.lookup('cosmo.babylon'));
console.log(`App started on port ${process.env.PORT || 3001}`);
 });