Meteor-style client-side database + Redux

pouch.js

// Meteor-style client-side database + Redux
// kind of a hack. not idiomatic Redux
// might become an npm module at some point idk
import PouchDB from 'pouchdb'

export function databaseReducer(state = {}, action) {
    if (action.type === 'DATABASE_UPDATE') {
        return Object.assign({}, state, { [action.db]: action.docs })
    }
    return state
}

export function databaseSetup(store, name) {
    const database = new PouchDB(name)

    if (!window.DB) window.DB = {}
    window.DB[name] = database

    function update() {
        // super inefficient to dump all docs each time. should really replace
        // the docs listed in the change event
        database.allDocs({ include_docs: true }).then(res => {
            const docs = res.rows.map(obj => obj.doc)
            store.dispatch({ type: 'DATABASE_UPDATE', db: name, docs })
        })
    }

    database.changes({ since: 'now', live: true }).on('change', update)
    update()
}