This middleware automatically parses HTTP requests with a JSON body and converts the body into an
object. Also handles gracefully broken JSON as UnprocessableEntity (422 errors)
if used in combination with httpErrorHandler
.
It can also be used in combination with validator as a prior step to normalize the
event body input as an object so that the content can be validated.
If the body has been parsed as JSON, you can access the original body (e.g. for webhook signature validation) through the request.event.rawBody
.
Install
To install this middleware you can use NPM:
npm install --save @middy/http-json-body-parser
Options
reviver
(function) (default undefined
): A reviver parameter may be passed which will be used JSON.parse
ing the body.
Sample usage
import middy from '@middy/core'
import httpHeaderNormalizer from '@middy/http-header-normalizer'
import httpJsonBodyParser from '@middy/http-json-body-parser'
const handler = middy((event, context) => {
return {}
})
handler
.use(httpHeaderNormalizer())
.use(httpJsonBodyParser())
const event = {
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({foo: 'bar'})
}
handler(event, {}, (_, body) => {
t.is(body,{foo: 'bar'})
})
Middy documentation and examples
For more documentation and examples, refers to the main Middy monorepo on GitHub or Middy official website.
Contributing
Everyone is very welcome to contribute to this repository. Feel free to raise issues or to submit Pull Requests.
License
Licensed under MIT License. Copyright (c) 2017-2022 Luciano Mammino, will Farrell, and the Middy team.