nested-hamt

Nested JSON structures in a HAMT tree

Based off of mini-hamt, but this handles nested JSON structures. I'll explain later.

Install

npm install --save @rstacruz/nested-hamt

API

set

set(tree, keypath, value)

Sets data into a HAMT store.

import { set, get, empty } from 'nested-hamt'

var data = set(empty, 'user', { name: 'John' })
get(data, 'user.name') // => 'John'

The keypaths can be given as an array or a dot-separated string. This applies to get() and del() as well.

// Both are equivalent
var data = set(empty, 'user.name', 'John')
var data = set(empty, ['user', 'name'], 'John')

get

get(tree, keypath)

Returns data from a HAMT store. If keypath is not given, it returns the entire store as a JSON object.

del

del(tree, keypath)

Deletes data from a keypath.

keys

keys(tree)

Returns the available keys for tree.

fromJS

fromJS(object)

Converts JSON object into a HAMT tree. Inverse of toJS().

toJS

toJS(tree)

Converts HAMT tree into a JSON object. Inverse of fromJS().

empty

empty

Empty data.

import { set, get, empty } from 'nested-hamt'

var tree = set(empty, 'hello', 'world')
get(tree, 'hello') // => 'world'

extend

extend(tree, ...objects)

Extends HAMT tree with data from objects. Compare with Object.assign().

getType

getType(tree, keypath)

Checks for the type of data. Can return object, array, or anything typeof can return (string, number, boolean, and so on).

Thanks

ricostacruz.com · GitHub @rstacruz · Twitter @rstacruz