moy-fp/src/Object/dissocPath.js

A functional programming library.

import curry from '../Function/curry'
import remove from '../List/remove'
import update from '../List/update'
import dissoc from './dissoc'
import assoc from './assoc'

/**
 * [k] -> {k: v} -> {k: v}
 */
const dissocPath = curry(
  (paths, obj) => {
    const key = paths[0],
          length = paths.length
    return !(obj !== null && typeof obj === 'object' && Object.hasOwnProperty.call(obj, key)) || length === 0 ? 
            obj :
            length === 1 ? 
              Number.isInteger(key) ? 
                remove(key, 1, obj) : 
                dissoc(key, obj) : 
              Number.isInteger(key) ?
                update(key, dissocPath(paths.slice(1), obj[key]), obj) :
                assoc(key, dissocPath(paths.slice(1), obj[key]), obj)
  }
)

export default dissocPath