[javascript] HTTP GET Request in Node.js Express

Use reqclient: not designed for scripting purpose like request or many other libraries. Reqclient allows in the constructor specify many configurations useful when you need to reuse the same configuration again and again: base URL, headers, auth options, logging options, caching, etc. Also has useful features like query and URL parsing, automatic query encoding and JSON parsing, etc.

The best way to use the library is create a module to export the object pointing to the API and the necessary configurations to connect with:

Module client.js:

let RequestClient = require("reqclient").RequestClient

let client = new RequestClient({
  baseUrl: "https://myapp.com/api/v1",
  cache: true,
  auth: {user: "admin", pass: "secret"}
})

module.exports = client

And in the controllers where you need to consume the API use like this:

let client = require('client')
//let router = ...

router.get('/dashboard', (req, res) => {
  // Simple GET with Promise handling to https://myapp.com/api/v1/reports/clients
  client.get("reports/clients")
    .then(response => {
       console.log("Report for client", response.userId)  // REST responses are parsed as JSON objects
       res.render('clients/dashboard', {title: 'Customer Report', report: response})
    })
    .catch(err => {
      console.error("Ups!", err)
      res.status(400).render('error', {error: err})
    })
})

router.get('/orders', (req, res, next) => {
  // GET with query (https://myapp.com/api/v1/orders?state=open&limit=10)
  client.get({"uri": "orders", "query": {"state": "open", "limit": 10}})
    .then(orders => {
      res.render('clients/orders', {title: 'Customer Orders', orders: orders})
    })
    .catch(err => someErrorHandler(req, res, next))
})

router.delete('/orders', (req, res, next) => {
  // DELETE with params (https://myapp.com/api/v1/orders/1234/A987)
  client.delete({
    "uri": "orders/{client}/{id}",
    "params": {"client": "A987", "id": 1234}
  })
  .then(resp => res.status(204))
  .catch(err => someErrorHandler(req, res, next))
})

reqclient supports many features, but it has some that are not supported by other libraries: OAuth2 integration and logger integration with cURL syntax, and always returns native Promise objects.

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