generatePrivateMethods.js

generatePrivateMethods.js

import R from 'ramda'

const generateClass = (config) => R.reduce(generalizeProp(config), {}, R.keys(config))

const generalizeProp = R.curry((config, privated, prop) => {
  const public = {
    get: () => config[prop],
    set: (val) => config[prop] = val,
  }
  
  const capProp = capitalize(prop)
  const methods = renameKeys({get: `get${capProp}`, set: `set${capProp}`})(public)
  return {...methods, ...privated}
})

const capitalize = (str) => `${str[0].toUpperCase()}${str.substr(1)}`

const renameKeys = R.curry((keysMap, obj) => {
  const mergeKeys = (acc, key) => R.assoc(keysMap[key] || key, obj[key]
  return R.reduce(mergeKeys, acc), {}, R.keys(obj))
)}

const pessoa = generateClass({name: "ana", age: 22})

console.log('pessoa.name: ', pessoa.name)
console.log('pessoa.getName: ', pessoa.getName())
console.log('pessoa.setName: ', pessoa.setName('Tetudinho Macio'))
console.log('pessoa.getName: ', pessoa.getName())
console.log('pessoa.getAge: ', pessoa.getAge())