Uncaught ReferenceError: ReactDOM is not defined

[gregology]

Hey Team, I'm getting a Uncaught ReferenceError: ReactDOM is not defined error when trying to load /graphiql in my app. Hitting refresh fixes the problem. The issue occurs on multiple browsers and with extensions disabled.

I've tried updating to the latest gem versions.

...
    graphiql-rails (1.4.10)
      railties
      sprockets-rails
    graphql (1.7.13)
...
    turbolinks (5.1.0)
      turbolinks-source (~> 5.1)
    turbolinks-source (5.1.0)
...

And the console error is

Uncaught ReferenceError: ReactDOM is not defined
    at <anonymous>:33:5
    at r.assignNewBody (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at r.replaceBody (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
    at r.e.renderView (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at r.render (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at Function.e.render (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at t.renderSnapshot (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at t.render (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)
    at e.render (turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6)

(anonymous) @ VM231:33
r.assignNewBody @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
r.replaceBody @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
(anonymous) @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.renderView @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
r.render @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.render @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
t.renderSnapshot @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
t.render @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.render @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
(anonymous) @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
(anonymous) @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
requestAnimationFrame (async)
e.render @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.loadResponse @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.visitRequestCompleted @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.requestCompletedWithResponse @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
(anonymous) @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.endRequest @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.requestLoaded @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
(anonymous) @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
load (async)
e.createXHR @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.issueRequest @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.visitStarted @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.start @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.startVisit @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:7
e.startVisitToLocationWithAction @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.visitProposedToLocationWithAction @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.visit @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6
e.clickBubbled @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:7
(anonymous) @ turbolinks.self-2db6ec539b9190f75e1d477b305df53d12904d5cafdd47c7ffd91ba25cbec128.js?body=1:6

Any suggestions for further troubleshooting?

Cheers Team!

[Spots]

I had this issue and it turned it to be caused because I was trying to use the graphiql gem on an API only rails project.

[borakilicoglu]

i had a same issue! what is the solution?

[rajeshweinvest]

Which middlewares to add ?

[gregology]

I had a play with the graphiql-rails gem. I tried bumping the graphiql version and re ordering the assets with no luck. Then I added a 500ms delay so the assets are all loaded. It's not elegant but it's a temporary fix.

gem 'graphiql-rails', git: 'https://github.com/gregology/graphiql-rails'

[rmosolgo]

Also I just noticed the error trace has turbolinks in it. Does this happen on a direct visit to /graphiql, or only after clicking a link? If it's only from clicking a link, you can see if you can disable turbolinks for that link.

[gregology]

Yes @rmosolgo, that fixed it. I disabled turbolinks in my rails 5.2 app with:

<%= link_to "GraphiQL", '/graphiql', data: { turbolinks: false } %>

Thanks team!

[atainton]

@Spots did you manage to get this working using an API only project?