RN upgrade helper to npm i command

get-npm-install-comment-for-rn-packages.js

// helper script for generating an `npm install` command for packages chagnes when @rnx-kit/align-deps is bad

// given example for:
// https://react-native-community.github.io/upgrade-helper/?from=0.82.1&to=0.83.4

const packages = {
  // copy & paste from https://react-native-community.github.io/upgrade-helper's package.json green lines
  // following example from https://react-native-community.github.io/upgrade-helper/?from=0.82.1&to=0.83.4
  
  // HEY YOU!
  
  // replace the following with your output:
  react: "19.2.0",
  "react-native": "0.83.4",
  "@react-native/new-app-screen": "0.83.4",
  "@react-native/babel-preset": "0.83.4",
  "@react-native/eslint-config": "0.83.4",
  "@react-native/metro-config": "0.83.4",
  "@react-native/typescript-config": "0.83.4",
  "@types/react": "^19.2.0",
  "react-test-renderer": "19.2.0",
  
  // END HEY YOU!
};

const rejectionPredicates = [
  // idk, sometimes it's helpful to just copypasta what the website tells you and
  // me, the script maintainer saying "no you don't need this" without you having to
  // worry about that just reading the upgrade helper
  /* eslint-disable @typescript-eslint/no-unused-vars */
  ( [packageName, version] ) => packageName === "@react-native/new-app-screen",
  /* eslint-enable @typescript-eslint/no-unused-vars */
];

const packageList = Object
  .entries( packages )
  .filter( packageTuple => !rejectionPredicates.some( predicate => predicate( packageTuple ) ) )
  .map( ( [packageName, version] ) => `"${packageName}@${version}"` )
  .join( " " );

const command = `npm install --save-exact ${packageList}`;

console.log( command );
// sample output:
// npm install --save-exact "react@19.2.0" "react-native@0.83.4" "@react-native/babel-preset@0.83.4" "@react-native/eslint-config@0.83.4" "@react-native/metro-config@0.83.4" "@react-native/typescript-config@0.83.4" "@types/react@^19.2.0" "react-test-renderer@19.2.0"