Fix expo being unable to resolve config plugin

[maartenweyns]

Description

Fixes an issue where Expo is unable to resolve the config plugin when following the installation instructions. The following error was thrown when trying to build with expo:

Failed to resolve plugin for module "@rnmapbox/maps" relative to "<PROJECT-PATH>"

The fix is based on this PR, fixing the same issue.

Checklist

• I have tested this on a device/simulator for each compatible OS
• I updated the documentation with running yarn generate in the root folder
• I updated the typings files - if js interface was changed (index.d.ts)
• I added/ updated a sample - if a new feature was implemented (/example)

[mfazekas]

@maartenweyns can you add steps to reproduce the issue? Thanks.

[maartenweyns]

The most minimal setup that reproduces the issue:

• Create blank react native app:

yarn create expo-app -t expo-template-blank-typescript TestApp

• Install mapbox with expo (or yarn)

expo install rnmapbox/maps#main

• Add expo to plugin array

{
  "expo": {
    "plugins": [
      [
        "@rnmapbox/maps",
        {
          "RNMapboxMapsImpl": "maplibre"
        }
      ]
    ]
  }
}

• Run expo prebuild

expo prebuild

The following error is displayed:

CommandError: Failed to resolve plugin for module "@rnmapbox/maps" relative to "<PATH>"

[maartenweyns]

It looks like this file did not manage to make its way on npm? When I install this dependency with the #main version, the file is not there and I get the same expo error.