react-date-picker/src/assignDefined.js

A carefully crafted date picker for React

import assign from 'object-assign'

const filter = (object) => {
  return Object.keys(object).reduce((acc, prop) => {
    const value = object[prop]

    if (value !== undefined) {
      acc[prop] = value
    }

    return acc
  }, {})
}

export default (target, ...args) => {
  return assign(target, ...args.map(filter))
}