How to use helmet.js from typescript?

Question

It is pretty easy to use helmet from pure js per documentation:

const express = require('express')
const helmet = require('helmet')

const app = express()

app.use(helmet())

But how can I use it from typescript? Typings file exports a bunch of stuff, one of which is helmet interface, which cannot be called as a function.. I can import it like this, but have no idea what to do next, what should I pass to app.use?

import * as helmet from 'helmet'

I have imported the latest version of both helmet and typings:

"@types/helmet": "0.0.43",
"helmet": "^3.18.0"

Answer 1

terminal:

npm install helmet
npm install @types/helmet --save-dev

app.ts:

import Helmet from "helmet";

const app = express();
app.use(Helmet());

helmet middleware should be the first thing you activate once you initialized express application object. Also note the titlecase name