camelcasing proxy (toy)

camelcase-proxy.js

const toSnakeCase = str => str.replace(/([A-Z])/g, match => '_' + match.toLowerCase())

const handler = {
  get(target, name) {
    const snakeName = toSnakeCase(name)
    const value = target[snakeName]
    if (value === Object(value) && !Array.isArray(value)) {
      return new Proxy(value, handler)
    } else {
      return Reflect.get(target, snakeName);
    }
  }
}

const getProxy = target => new Proxy(target, handler)

const test = {
  test_me: {
    i_am: [1,2,3]
  }
}
const proxied = getProxy(test)
proxied.testMe.iAm
// > [1,2,3]