moy-fp/src/Object/omit.js

A functional programming library.

import curry from '../Function/curry'

/**
 * [k] -> {k: v} -> {k: v}
 */
const omit = curry(
  (keys, obj) => {
    const keysMap = keys.reduce((map, key) => {
      map[key] = true
      return map
    }, {}),
          result = {},
          entries = Object.entries(obj)
    for(let [key, value] of entries){
      if(!keysMap[key]){
        result[key] = value
      }
    }
    return result
  }
)

export default omit