qortal-ui/crypto/api/utils/stateAwait.js

import { store } from '../../api'

let subscriptions = []

// Have to wait with init because something import stateAwait before the store gets initialized
let initialized = false
const init = () => {
	initialized = true
	store.subscribe(() => {
		const state = store.getState()

		subscriptions = subscriptions.filter(fn => fn(state))
	})
}

export const stateAwait = fn => {
	return new Promise((resolve, reject) => {
		// Check immediately...then if not true store it
		if (!initialized) {
			init()
		}
		if (fn(store.getState())) resolve()
		subscriptions.push(state => {
			if (fn(state)) {
				resolve()
				return true
			}
			return false
		})
	})
}