UNMET PEER DEPENDENCY error for ionic-paypal - ionic-framework

Question

I was trying to install paypal & onesignal plugin from official website with the help of official documentations and I got this error:
+-- UNMET PEER DEPENDENCY #ionic-native/core#4.3.2
`-- #ionic-native/paypal#5.30.0
Here is my Package.json
{
"name": "ionic-hello-world",
"version": "0.0.0",
"author": "Ionic Framework",
"homepage": "http://ionicframework.com/",
"private": true,
"scripts": {
"clean": "ionic-app-scripts clean",
"build": "ionic-app-scripts build",
"lint": "ionic-app-scripts lint",
"ionic:build": "ionic-app-scripts build",
"ionic:serve": "ionic-app-scripts serve"
},
"dependencies": {
"#angular/common": "5.0.0",
"#angular/compiler": "5.0.0",
"#angular/compiler-cli": "5.0.0",
"#angular/core": "5.0.0",
"#angular/forms": "5.0.0",
"#angular/http": "5.0.0",
"#angular/platform-browser": "5.0.0",
"#angular/platform-browser-dynamic": "5.0.0",
"#ionic-native/core": "4.3.2",
"#ionic-native/onesignal": "^5.30.0",
"#ionic-native/paypal": "^5.30.0",
"#ionic-native/splash-screen": "4.3.2",
"#ionic-native/status-bar": "4.3.2",
"#ionic/storage": "2.1.3",
"ionic-angular": "3.9.2",
"ionicons": "3.0.0",
"rxjs": "5.5.2",
"sw-toolbox": "3.6.0",
"woocommerce-api": "^1.5.0",
"zone.js": "0.8.18"
},
"devDependencies": {
"#ionic/app-scripts": "^3.2.4",
"typescript": "2.4.2"
},
"cordovaPlugins": [
"ionic-plugin-keyboard",
"cordova-plugin-whitelist",
"cordova-plugin-statusbar",
"cordova-plugin-device",
"cordova-plugin-console",
"cordova-plugin-splashscreen"
],
"cordovaPlatforms": [],
"description": "ClickThrough: An Ionic project"
}

Answer 1

The PayPal service used by ionic-native/paypal has been deprecated for years and is end of life on December 7.
You should instead integrate the v2/checkout/orders API from a server, with or without the JS front end for the approval flow.
Approval requires a full mobile browser or SFSafariViewController/Chrome Custom Tabs. Approval cannot be given in a WKWebView or similar.