chain-able/deps/meta/keymap.js

interfaces that describe their intentions.

const isUndefined = require('../is/undefined')
const isString = require('../is/string')

const keys = [
  /* --- chain --- */
  /*  0  */ 'parent',
  /*  1  */ 'store',
  /*  2  */ 'meta',
  /*  3  */ 'className',
  /* --- meta --- */
  /*  4  */ 'observers',
  /*  5  */ 'transformers',
  /*  6  */ 'decorated',
  /*  7  */ 'shorthands',
  /* --- types --- */
  /*  8  */ 'undefined',
  /*  9  */ 'null',
  /*  10 */ 'string',
  /*  11 */ 'number',
  /*  12 */ 'function',
  /*  13 */ 'array',
  /*  14 */ 'boolean',
  /* --- next --- */
  '_', // ?
]

/* prettier-ignore */
/**
 * @param  {number} [index=Number]
 * @param  {undefined | Object | Array} [obj=undefined]
 * @param  {undefined | any} [val=undefined]
 * @return {string | number | any}
 */
function access(index = -Infinity, obj = undefined, val = undefined) {
  if (isString(index)) index = keys.indexOf(index)
  // now map this to the arrays...
  let key = keys[index]
  // just name
  if (isUndefined(obj)) return key
  // get prop
  else if (isUndefined(val)) return obj[key]
  // set prop
  else if (!isUndefined(val)) return (obj[key] = val)
}

module.exports = Object.assign(access, require('./enums'), {access})

// const eh = {parent: 100}
// const timer = require('fliplog').fliptime()
// timer.start('access')
//
// let a = []
// let i = 0
// while (i < 10000000) {
//   a.push(access(0, eh, 'eh'))
//   eh.parent = 'eh'
//   a.push(eh.parent)
//   i++
// }
//
// timer.stop('access').log('access')