I forked a React Native npm library react-native-calendars to make some changes to it. I now want to implement these changes in my project. I have installed it in my project using:

npm i git <my_forked_git_repo_url>

This successfully added the package to my node_modules, however I still get an error in my code when I try and import react-native-calendars saying Cannot find module. After doing some research I found (here) that I must create a build using npm run build and add it to the forked repository.

However, when I run npm run build it creates a build directory in my ios/ directory (since I am targeting iOS). Is this expected, or should I have a new build/ directory in the root directory? The contents of this build/ directory include a ...-buildRequest.json, ...-desc.xcbuild, ...-manifest.xcbuild, ...-targetFile.txt, and a BuildDescriptionCacheIndex-....

CodePudding user response：

You could:

1. install the original package
2. paste your changes into the package's code in node_modules
3. install patch-package if you don't already have it (follow the instructions here)
4. run npx patch-package react-native-calendars

This will create a diff between the original package and your changes. Then your changes will be applied every time you run yarn or npm.