Comprehensive Flow with React & Redux – Jiri Kolarik – Medium

Comprehensive Flow with React & Redux  #flow #flowtype #react #reactjs #redux #reactjs

  • This is bit boilerplate, you have to say what goes in and what action is returned including a type but in this case not only a string, but exactly the same constat.//@flowexport type AppLocaleChangeType = { type: ‘APP/LOCALE:CHANGE’, locale: string};export function appLocaleChange(locale: string): AppLocaleChangeType { return { type: APP.LOCALE.CHANGE, locale…
  • Now we see in our switch/case what action are we dealing with and what options do we have.//@flowimport type { ActionType } from ‘actions/index’;export type AppState = { +locale: string}const initState: AppState = { locale: ‘en’}export default function reducer(state: AppState = initialState, action: ActionType) { switch (action.type) { case APP.LOCALE.CHANGE:…
  • /app’;export type State = { +app: AppState}ComponentsRight now, we know how the state may look like and whatever actions we can use// @flowimport React from ‘react’;import { connect } from ‘react-redux’;import { appLocaleChange } from ‘actions/app’;import type { Dispatch } from ‘actions/index’;type Props = { dispatch: Dispatch}const Language = (props:…
  • // @flowimport React from ‘react’;import { connect } from ‘react-redux’;import { appLocaleChange } from ‘actions/app’;import type { State } from ‘store/types’;import type { Dispatch } from ‘actions/index’;import type { MapStateToProps } from ‘react-redux’;type OwnProps = { visible: boolean}type StateProps = { locale: string}type Props = { dispatch: Dispatch} OwnProps StatePropsconst…
  • props.visible) { return null; }const onChange = (event: SyntheticEventEventTarget) = { if (event.target instanceof HTMLInputElement) { } };return ( div className=”css-select” styleName=”select” select onChange={onChange} defaultValue={props.locale} option value=”EN”English/option option value=”CS”Czech/option /select /div );};const mapStateToProps: MapStateToPropsState, OwnProps, StateProps = (state) = ({ locale: state.app.locale});export default now you should have access to all…

Before I start, I’d like to say, that this is my very first article. I’m not good in writing or expressing my self in my native language and in English is even bit worse, but I haven’t found an…
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busypeoples/IntroductionToFlow.md Last active Oct 8, 2017

  • Intended for developers interested in getting started with Flow.
  • At the end of this introduction, you should have a solid understanding of Flow and how to apply it when building an application.
  • Covers all the basics needed to get started with Flow.
  • Covers all the basic needed to get started with Flow and ReactJS.

Intended for developers interested in getting started with Flow.
At the end of this introduction, you should have a solid understanding of Flow and how to apply it when building an application.
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Experimenting with React Native & Expo’s Audio API

  • This year, we’re working on a complete refresh (Winds 2.0) that will introduce podcast support, enhanced social functionality, native iOS and Android applications, and much more.
  • With that, we have decided to use React Native to support our iOS and Android builds – a framework that will allow our development team to write applications that target multiple operating systems, with pure JavaScript.
  • We decided to build an audio player for iOS and Android with Expo’s powerful audio API and, of course, React Native.
  • Without React Native and the help of Expo, we would not have been able to target multiple operating systems in the timeframe that we have allotted and we would have to work with two separate codebases.
  • By experimenting and building a fully functional proof of concept, we’re now one step closer to Winds 2.0, and couldn’t be happier to announce that the code is 100% open-source on GitHub.

Stream is hiring Go, Python, and Machine Learning Engineers. Join our team and help powers the feeds for more than 200 million end users!
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Getting Started with React Navigation, the Navigation Solution for React Native

Getting Started with React Navigation, a navigation solution for React Native:

  • I’ve used React Native since the very early days of it being opened sourced and have tried many solutions, this has been my navigator progression…NavigatorIOS Navigator react-native-router-flux NavigationExperimental or ex-navigation (depending on navigation requirements)Each upgrade took time to refactor and introduce a new, slightly different, pattern for navigation and managing navigation state.Fortunately, we’ve now got a single “official” solution to navigation in React Native with react-navigation.
  • The TabNavigator takes an object and each key/value pair is going to represent a tab.You can see that we then pass a screen to each tab—this will be the component that should be rendered when that tab is active.The last thing we need to do is use the Tabs navigator in our app entry point.
  • We can then replace the Feed screen definition in the TabNavigator with our new stack.I didn’t mention it before but in React Navigation, in addition to accepting components for the screen, it accepts other navigation stacks to display for a screen.
  • It, like the navigate function, is available on I’m pulling all the data to generate the UserDetail.js screen like thisModalThe final thing I want to cover in this tutorial is how to create a modal with React Navigation.
  • In addition to the mode, which I described above, we have headerMode which tells the StackNavigator to not display a navigation bar for this stack — we’ll let the children navigators do that.To keep a consistent interface and to show that you can nest a StackNavigator in a StackNavigator we’ll build one for the settings screen as well.Finally, we’ll want to tell the app entry point to use our new Root navigator instead of the Tabs.All of this leaves us with the followingRemember, all of this code is available on Github and I encourage you to check it out as well as the react navigation docs.

If you’ve worked with React Native for any amount of time you’ve likely been confused by how you navigate in your app (practices, packages, etc). I’ve used React Native since the very early days of…
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Be an expert in ReactJS by watching these 5 videos.

The 5 essential videos to learn #reactjs

  • Your creates bundles of HTML / Javascript which are called “Components”, and are it gives you hooks to store the state in the browser memory, but in the end you spill out HTML which renders your page in the browser.You cannot build a fully functional app with ReactJS alone.
  • Here we will cover the fundamentals for React like :Create a sample app with the Command Line Tool (CLI)What are ReactJS Components and how to use them.How to manage State its propertiesEvent Handling with ReactWhat is JSX — JavaScript Syntax Extension, and why we need it.Lifecycle Methods for your application and components.How to send basic HTTP Requests from your app and integrate external API’sYou can find the code here : to ReduxAs applications increase in size and complexity, managing state for your apps become important, and it’s very difficult to achieve without good patterns.
  • Frameworks like Redux make it easier to manage state of your apps.In this video we will take a look at Redux and how it can be used to track data and state changes over the application lifecycle, making applications easier for you to develop and debug.
  • #4— Redux Deep DiveRedux is used for state management in your React applications.
  • Redux is flexible and there are a lot of ways that you can plug it in and configure it.In short, Redux has these pieces :- Store: One large memory store that stores the state for your entire application- Provider: Provider is like a wrapper around your application and injecting store in it.

React is basically a JavaScript library that gives you a template language and some function hooks to essentially render HTML. That’s all it outputs – HTML. Your creates bundles of HTML / Javascript…
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Announcing Meteor 1.4.3 – Meteor Blog

Announcing Meteor 1.4.3  #webdevelopment #nodejs #meteor #react #javascript #reactjs

  • Announcing Meteor 1.4.3Better core package versioning, upgrade to npm 4, and moreMeteor 1.4.2 was a landmark release that brought dramatically better incremental rebuild times for larger apps.
  • This release, with the first stable version being 1.4.3.1, stands out as one of the most community-driven releases ever, with over 250 commits from 26 different contributors.Update now by typing the following in your console!meteor update –release 1.4.3.1Now, let’s go over some of the more exciting improvements in this version.Stricter version constraints on core packagesFrom the early days of Meteor until 1.4, a Meteor release pinned a specific set of exact versions of all of the core packages.
  • This meant that you could be completely confident that using that release would give you the same package versions in every app, but made it impossible to ship incremental improvements to core packages without shipping a new release of the entire platform.
  • In Meteor 1.4.3, this approach is refined so that core package versions in an app must now be patch-compatible with the versions specified by its Meteor release.
  • These new packages should make it easier for developers using UI layers other than Blaze to build Meteor apps with smaller bundle sizes while still using the built-in authentication provider integrations.This improvement particularly highlighted a collaboration between many community members, with lots of people stepping up to convert the different authentication packages provided by Meteor core.

Meteor 1.4.2 was a landmark release that brought dramatically better incremental rebuild times for larger apps. Meteor 1.4.3 includes a number of incremental improvements in diverse parts of the…
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Use `react-devtools-core/standalone` instead of fork by jhen0409 · Pull Request #44 · jhen0409/react-native-debugger · GitHub

react-native-debugger – The standalone app based on official debugger of React Native, and includes React Inspector / Redux DevTools
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