express-swaggerize-ui is an node express middleware to show swagger-ui 3 for your local (or external) api.
npm install --save express-swaggerize-ui
const express = require('express');
const app = express();
const swaggerUi = require('express-swaggerize-ui');
app.use('/api-docs.json', function (req, res) {
res.json(require('./path/to/swaggerize/docs.json'));
});
app.use('/api-docs', swaggerUi());
app.listen(3000);