TCS-1286 RN 0.73 Upgrade (#75)

* TCS-1286 docs: update contributing doc to reflect use of npm instead of yarn

* TCS-1286 build: switch example app to use npm

* TCS-1286 build: add xcode env to gitignore

* TCS-1286 build: upgrade RN from 0.72 to 0.73

* TCS-1286 build: use new rn babel package

* TCS-1286 build: lock RN to 0.73.1

.gitignore

@@ -28,6 +28,7 @@ DerivedData
 *.ipa
 *.xcuserstate
 project.xcworkspace
+example/ios/.xcode.env.local
 
 # Android/IJ
 #

CONTRIBUTING.md

@@ -4,51 +4,47 @@ We want this community to be friendly and respectful to each other. Please follo
 
 ## Development workflow
 
-To get started with the project, run `yarn` in the root directory to install the required dependencies for each package:
+To get started with the project, run `npm install` in the root directory to install the required dependencies for each package:
 
 ```sh
-yarn
+npm install
 ```
 
-> While it's possible to use [`npm`](https://github.com/npm/cli), the tooling is built around [`yarn`](https://classic.yarnpkg.com/), so you'll have an easier time if you use `yarn` for development.
-
-While developing, you can run the [example app](/example/) to test your changes. Any changes you make in your library's JavaScript code will be reflected in the example app without a rebuild. If you change any native code, then you'll need to rebuild the example app.
-
 To start the packager:
 
 ```sh
-yarn example start
+npm run example:start
 ```
 
 To run the example app on Android:
 
 ```sh
-yarn example android
+npm run example:android
 ```
 
 To run the example app on iOS:
 
 ```sh
-yarn example ios
+npm run example:ios
 ```
 
 Make sure your code passes TypeScript and ESLint. Run the following to verify:
 
 ```sh
-yarn typescript
-yarn lint
+npm run typescript
+npm run lint
 ```
 
 To fix formatting errors, run the following:
 
 ```sh
-yarn lint --fix
+npm run lint --fix
 ```
 
 Remember to add tests for your change if possible. Run the unit tests by:
 
 ```sh
-yarn test
+npm run test
 ```
 
 To edit the Objective-C files, open `example/ios/IdscanSdkExample.xcworkspace` in XCode and find the source files at `Pods > Development Pods > react-native-idscan-sdk`.
@@ -83,20 +79,20 @@ We use [release-it](https://github.com/release-it/release-it) to make it easier
 To publish new versions, run the following:
 
 ```sh
-yarn release
+npm run release
 ```
 
 ### Scripts
 
 The `package.json` file contains various scripts for common tasks:
 
-- `yarn bootstrap`: setup project by installing all dependencies and pods.
-- `yarn typescript`: type-check files with TypeScript.
-- `yarn lint`: lint files with ESLint.
-- `yarn test`: run unit tests with Jest.
-- `yarn example start`: start the Metro server for the example app.
-- `yarn example android`: run the example app on Android.
-- `yarn example ios`: run the example app on iOS.
+- `npm run bootstrap`: setup project by installing all dependencies and pods.
+- `npm run typescript`: type-check files with TypeScript.
+- `npm run lint`: lint files with ESLint.
+- `npm run test`: run unit tests with Jest.
+- `npm run example:start`: start the Metro server for the example app.
+- `npm run example:android`: run the example app on Android.
+- `npm run example:ios`: run the example app on iOS.
 
 ### Sending a pull request
 

babel.config.js

@@ -1,3 +1,3 @@
 module.exports = {
-  presets: ['module:metro-react-native-babel-preset'],
+  presets: ['module:@react-native/babel-preset'],
 };