Sample api validation using yup

app.js

const express = require('express');
const yup = require('yup');

const app = express();

app.get('/api/user/new', async (req, res) => {
  const valid = await validateParams(req, res, {
    name: yup.string().required('Name is required'),
    extern_id: yup.string().required('Please select a location'),
  });
  if (!valid) return;

  res.json('success');
});

app.set('json spaces', 2);
app.listen(8005);

/**
 *
 */
async function validateParams(req, res, shape) {
  const schema = yup.object().shape(shape);
  const params = {};
  Object.assign(params, req.query);
  try {
    await schema.validate(params, { abortEarly: false });
    return true;
  }
  catch (error) {
    const errors = error.inner.reduce((obj, err) => ({ ...obj, [err.path]: err.message }), {});
    console.log('error:', error);
    res.json(errors);
    return false;
  }
}