Packager error: "Can't find variable: process"

Do you want to request a feature or report a bug? Bug

Behavior The issue was initially discovered in #65 after people began using the latest metro-bundler 0.20.0 version to work around dynamic requires in packages like moment.js

Packager throws the following error when bundling:

Unhandled JS Exception: Can't find variable: process

Repro Steps

1. Add metro-bundler 0.20.0 to package.json as a “resolutions” entry for react-native:

"resolutions": {
  "react-native/metro-bundler": "0.20.0"
}

1. Run react-native run-ios as normal.

NOTE: The fact that this issue manifested for people in metro-bundler@0.20.0 is a red herring. This issue appears to be happening with older versions of metro-bundler as well. I’ve confirmed the same error appears in metro-bundler@0.19.0. I haven’t tried to reproduce it in any versions older than 0.19.0 yet.

Environment Node: v8.5.0

package.json

  "dependencies": {
    "react": "16.0.0-beta.5",
    "react-native": "0.49.3"
  },
  "resolutions": {
    "react-native/metro-bundler": "0.19.0"  
  },

[mackenziemance]

@richardgirges Any updates on this ?

[bnjm]

@PvanHengel updating to RN 0.50.3 fixed this for me… hopefully fixes for you too.