Running example fails to build DependencyGraph: @providesModule naming collision

[vtsatskin]

The react native packager yields an error when attempting to run the example application on iOS. I'm using the following versions of react-native:

• react-native-cli: 1.2.0
• react-native: 0.41.2
• iOS Simulator 10.2

Steps to reproduce

git clone capitalone/react-native-pathjs-charts
cd react-native-pathjs-charts
git checkout tags/0.0.26
cd example
yarn install
react-native link react-native-svg
react-native run-ios

Error

~/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native/packager ~
Scanning 472 folders for symlinks in /Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules (29ms)
 ┌────────────────────────────────────────────────────────────────────────────┐ 
 │  Running packager on port 8081.                                            │ 
 │                                                                            │ 
 │  Keep this packager running while developing on any JS projects. Feel      │ 
 │  free to close this tab and run your own packager instance if you          │ 
 │  prefer.                                                                   │ 
 │                                                                            │ 
 │  https://github.com/facebook/react-native                                  │ 
 │                                                                            │ 
 └────────────────────────────────────────────────────────────────────────────┘ 
Looking for JS files in
   /Users/vt/Code/FYDP/external/react-native-pathjs-charts/example 

Loading dependency graph...
React packager ready.

Failed to build DependencyGraph: @providesModule naming collision:
  Duplicate module name: react-native-vector-icons
  Paths: /Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native/local-cli/core/__fixtures__/files/package.json collides with /Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native-pathjs-charts/node_modules/react-native/local-cli/core/__fixtures__/files/package.json

This error is caused by a @providesModule declaration with the same name across two different files.
Error: @providesModule naming collision:
  Duplicate module name: react-native-vector-icons
  Paths: /Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native/local-cli/core/__fixtures__/files/package.json collides with /Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native-pathjs-charts/node_modules/react-native/local-cli/core/__fixtures__/files/package.json

This error is caused by a @providesModule declaration with the same name across two different files.
    at HasteMap._updateHasteMap (/Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native/packager/react-packager/src/node-haste/DependencyGraph/HasteMap.js:158:13)
    at p.getName.then.name (/Users/vt/Code/FYDP/external/react-native-pathjs-charts/example/node_modules/react-native/packager/react-packager/src/node-haste/DependencyGraph/HasteMap.js:133:31)
~
Process terminated. Press <enter> to close the window

[marzolfb]

I tried this out myself and can't reproduce the same behavior you're seeing though I did run into some problems. First though, what version of yarn are you running with?

When I installed yarn on mac the first time with brew update && brew install yarn, it downloaded and installed version 0.20.3 which looking at the yarn release page on github appears to be a pre-release version (because the 0.18.2 version is labelled as the latest version). Anyways, when I did yarn install from the example directory, I got an error which you don't seem to have received in your example above. My yarn install output on 0.20.3 looked like this:

warning react-native > xcode > node-uuid@1.4.7: use uuid module instead
[2/4] 🚚  Fetching packages...
[3/4] 🔗  Linking dependencies...
error An unexpected error occurred: "ENOENT: no such file or directory, lstat '/Users/Applications'".
...

which seems to indicate that yarn (or this specific version of yarn) doesn't like the relative path spec in the example package.json:

"dependencies": {
...
"react-native-pathjs-charts": "file:../",

It looks like yarnpkg/yarn#1498 fixed several issues logged with similar behavior to what I experienced. The last comment on that PR was that it was fixed in 0.18.0 and when I went to the yarn releases page, I saw that 0.18.2 was the official latest release, so then I went and followed the directions here to install that specific version:

curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 0.18.2 

Once I did that I was able to run the example app successfully with react-native run-ios

If you are using a different yarn version than 0.18.2, could you try installing this version and using it and seeing if you have the same problem?

[vtsatskin]

I'll try this out this weekend.

[vtsatskin]

I was running yarn 0.16.1 when I reported this bug. I ran the following to update yarn to 0.21.3:

brew update
brew upgrade yarn

Running the original steps to reproduce again yields a successful app that runs.

Trying your specific version of yarn 0.18.2 also works.

Thanks for helping figure this out @marzolfb!

[marzolfb]

Great! Thanks for verifying!