A Little Harsh

harsh.js

import shortId from "shortid"

export const HashToArray = (hash) => Object.keys(hash).map((key)=>hash[key])
export const ArrayToHash = (array) => array.reduce((acc, item)=>{
	const {id} = item
	acc[id] = item
	return acc
},{})

export const Add = (hash, itemObject) => {
	let { id } = itemObject
	if(!id){ id = shortId.generate() }
	const newItem = Object.assign({}, itemObject, {id})
	const newHash = Object.assign({}, hash, {[id]:newItem})
	return newHash
}

export const Remove = (hash, id) => {
	const array = HashToArray(hash).filter((item)=>(item.id !== id))
	const newHash = ArrayToHash(array)
	return newHash
}

export const Update = (hash, id, updateObject) => {
	if(hash[id]){
		const alteredObj = Object.assign({}, hash[id], updateObject)
		return Object.assign({}, hash, { [id]:alteredObj })
	}else{
		return hash
	}
}