observe-proxy

observer.js

const Observe = (AnObject) => {

  return new Proxy(AnObject, {
    get (target, prop) {

      const method = target[prop]

      if (typeof method === 'function') {
        console.log(`\`${method}\` was accessed`)
      } else {
        console.log(`\`${prop}\` was accessed, and has value of ${target[prop]}`)
      }
      return target[prop]
    },

    set (obj, prop, value) {
      const oldValue  = obj[prop]

      obj[prop] = value;

      console.log(`${prop} changed from \`${oldValue}\` to \`${value}\`.`)
      return true
    }
  })
}