Function validate

Creates a middleware, that validates the data of the 'body' property inside the 'request' object with the help of a joi schema.

See

https://www.npmjs.com/package/joi

Example

import assert from 'assert'
import createServer, { IHttpRequest, IHttpResponse, json, schema, validate } from '@egomobile/http-server'

interface IMySchema {
  email: string;
  name?: string;
}

const mySchema = schema.object({
  email: schema.string().strict().trim().email().required(),
  name: schema.string().strict().trim().min(1).optional()
})

const app = createServer()

app.post('/', [json(), validate(mySchema)], (request, response) => {
  const body: IMySchema = request.body

  assert.strictEqual(typeof body, 'object')
  assert.strictEqual(typeof body.email, 'string')

  if (typeof body.name !== 'undefined') {
    assert.strictEqual(typeof body.name, 'string')
    assert.strictEqual(body.name.length > 0, true)
  }
})

// ...
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