Setting bodyParser.text() breaks the authorisation

Issue Description

app.use(bodyParser.text({ limit: '100mb' }));
Setting this in express breaks parse server authorisation.

Steps to reproduce

Send a base64 object greater than 5MB in the post request and it breaks with a CORS error. I am assuming its because parse js-sdk calls cloud functions with content-type: plain/text.

So, to fix this, if I try to increase limit in the middleware authorisation breaks.

Expected Results

Work as expected

Actual Outcome

A CORS error with no error code but just fails via the browser.

Environment Setup

• Server

  • parse-server version (Be specific! Don't say 'latest'.) : "parse": "^2.11.0", "parse-server": "^4.1.0",
  • Operating System: Amazon Linux
  • Hardware: m3.medium
  • Localhost or remote server? (AWS, Heroku, Azure, Digital Ocean, etc): AWS

• Database

  • MongoDB version: 4.X
  • Storage engine: SSD
  • Hardware:
  • Localhost or remote server? (AWS, mLab, ObjectRocket, Digital Ocean, etc): Atlas

Logs/Trace

Start by reproducing the failure with bodyParser.text({ limit: '100mb' }) in an Express Parse Server using the reported Parse Server and parse JavaScript SDK versions. Check the authorization and CORS behavior for base64 POST bodies over 5MB, especially requests using content-type plain/text. Done means the larger request succeeds without breaking authorization or producing the browser-only CORS failure.