Hi @rangerscience

Do you mean the node library fs? If so then it is available. And what do you mean with ReactNative support? If you are able to create a screenshot of your device you can compare it? Or am I missing something?

Here's a snippet of the error as reported by Expo:

{
  "from" : "..../node_modules/canvas/lib/canvas.js",
  "message": "Unable to resolve module 'fs' from '.../canvas/js': Module does not exist in the module map"
}

From what I can tell googling around, although fs does exist in the normal Node environment, it's not available on devices - which is what I mean by React Native support.

PS - Thanks for the response! I'm poking around a bit more, have some new ideas...

@rangerscience

Still, I never heard of it being installed on devices.

I don't want to promote my own module here, but it also uses resemblejs (only a modified version of it) and it compares images of mobile devices (hybrid app / mobile browser) but the idea is the same for ReactNative, see the docs here

Thanks, but the dependency on Appium sounds complicated. I might just try to roll my own bitwise comparison, or see about replacing the Canvas dependency here with React-Canvas.

Not my area of expertise. I'll keep the ticket open and mark as a feature request. Happy to review any Pull-Requests.

I have the same issue, I think resemble is not compatible with react-native.
when I only add the line of import resemble I got the following message "can't find variable Image".