LocalDB: 简单的 localStorage ORM 实现

import localdb from 'localdb'
const Notes = new localdb('notes', 'Array', true)

// insert some collections and return the collections
let notes = Notes
  .add({title: 'Today is a big day', category: 'diary'})
  .add({title: 'I met my ex today', category: 'diary'})
  .add({title: 'Levandowski is amazing!', category: 'football'})
  .get()

// remove all post categoried in football
Notes.remove('category', 'football')

// find posts and update
const query = {title: 'diary'}
const opts = {limit: 2, sort: 1, sortBy: 'title', skip: 0}
Notes.find(query, opts).forEach(note => {
  note.author = 'egoist'
  Notes.save(note)
})

// override the whole database and generate meta
Notes.override({title: 'New post'}, true)

// populate another class, eg: your Post have a Author field
const Post = new localdb('Post', 'Array')
const User = new localdb('User', 'Array')

// you should have the Author's objectId to create an instance of that class
const author = User.extend('some_object_id')

Post.add({
  title: 'mt post title',
  author: author
})

// then you can populate that field before .find or .findOne
Post.populate('author').findOne()

// create an Object database and set some property
const Site = new localdb('site', 'Object')
Site.set('sitename', 'Google')

// get sitename
const sitename = Site.get('sitename')

// destroy some database
Site.destroy()

var opts = { limit: 0, sortBy: 'index', sort: 1, skip: 0 }