Custom Casing ESlint Rules

index.js

const checkAndReport (token, correct, context) {
 if (token.toLowerCase().includes(correct.toLowerCase()) && !token.includes(correct))) {
   context.report(node, `The standard variable casing is "${correct}", not ${node.id.name}`);
 }
}

module.exports.rules = {
    "paypal-casing": context => ({
        VariableDeclarator: (node) => {
          checkAndReport(node.id.name, 'Paypal', context)
        }
    }),
  
    "braintree-casing": context => ({
        VariableDeclarator: (node) => {
          checkAndReport(node.id.name, 'Braintree', context)
        }
    })
  
};