Why Do Developers Now Compare Vue.js to JavaScript Giants Angular and React?

  • It was 2016 when Vue.js rose to fame and gained so much traction that it’s now seen as an alternative for even well established JavaScript libraries, such as Angular and React.
  • Since Angular belongs to search engine giant Google and React comes from social media behemoth Facebook, developers still trust and use those libraries more than Vue.js.
  • This blog attempts to shed light on why there is a growing belief among developers that Vue.js is set to become the top JavaScript library, leaving behind Angular and React.
  • The reason many developers are turning to Vue is that it addresses the issues of React and Angular.
  • But, one must not forget that Angular and React are still very big names in the JavaScript world, whereas Vue has just begun to rise.

Vue.js, an MIT-licensed open source project, is a JavaScript library for building web interfaces. The library was first released in 2013, but not many developers took cognizance of it in web framework technology for the next two years. It was 2016 wh
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Mocking API responses with React Apollo – Carlos Martinez – Medium

  • Mocking API responses with React ApolloApollo Client and the GraphQL tools that have been made open source within the last years are pretty awesome, the community that is being builded around them is great.
  • However, as with every new technology, there are a lot of things that need to mature and improve.Documentation on testing is definitely one of the bits that needs a lot of improvements, it isn’t clear what to do, and I personally found myself digging into the source code to understand what to do.One of the problems I faced was that I wanted to use mock responses when testing my app components, and there are at least two ways of doing this:The first way is to use graphql-tools.
  • From their docs:This package allows you to use the GraphQL schema language to build your GraphQL.js schema, and also includes useful schema tools like per-type mocking.You can use this library together with a custom MockNetworkInterface to return mocked responses to your components:const { mockServer } = require(“graphql-tools”);const { print } = MockNetworkInterface { constructor(schema, mocks = {}) { if (!
  • schema) { throw new Error(‘Cannot create Mock Api without specifying a schema’); } this.mockServer = mockServer(schema, mocks); } query(request) { return request.variables); }}This is nice, and very flexible, with graphql-tools you can do pretty much whatever you do in your actual API.What I didn’t like about this approach is that you need your schema in sync with the schema defined in your API (you can do this making an instrospection query to your backend), I also found this approach overcomplicates things unnecessarily.The second (and simpler) approach I found was to use the mockNetworkInterface class, this class is defined in react-apollo/test-utils, you can have a peek on it here.To use it, you first need to define some Mock Requests (these requests need to be exactly the same your components will make):const GraphQLMocks = [ { request: { query: UserProfileQuery, variables: {} }, result: { data: { current_user: { id: 1, first_name: ‘Foo’, last_name: ‘Bar’, email: ‘foo@example.com’ } } } }];The UserProfileQuery is exported from your component:export const UserProfileQuery = gql` query userProfile { current_user { id first_name last_name email } }`;And this is how you use it to setup your tests:import { mockNetworkInterface } from ApolloClient from ‘apollo-client’;import { ApolloProvider } from ‘react-apollo’;import { mount } from ‘enzyme’;import App from ‘.
  • /App.js’;import React from ‘react’;const setupTests = () = { const networkInterface = // or mocks); const client = new ApolloClient({ networkInterface, addTypename: false }); const wrapper = mount( ApolloProvider client={client} App / /ApolloProvider ); return { wrapper };};It is important that you pass addTypename: false to ApolloClient, otherwise you would have to include a __typename field in all your mocks and queries.Now any queries your components make will be handled by your mocked responses, you have full control of what you want to return.And that’s it!

Apollo Client and the GraphQL tools that have been made open source within the last years are pretty awesome, the community that is being builded around them is great. However, as with every new…
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React.js Structures JavaScript for Easy Componentization  

  • JavaScript is in the midst of transforming development teams’ expectations for desktop, server and mobile apps.
  • Enhancements to JavaScript are enabling it to break free of the browser, while technologies such as Node.js and its package manager npm facilitate creation of portable front-end and back-end apps that rival those traditionally created for environments such as Windows, Linux and mobile devices.
  • Components encapsulate the necessary HTML, JavaScript and CSS for a particular component, and apps are built by composing components into larger components that encapsulate their own data and logic.
  • React and Facebook provide a number of recommendations and best practices to help developers build their apps, but developers ultimately shoulder the burden of building the app — creating or procuring the various components, designing the data architecture and testing plan, establishing the look and feel of the app, adapting to necessary display environments, and so forth.
  • Many of the ExtReact components leverage the data package to provide consistent buffering, sorting, filtering and pagination capabilities with minimal developer effort.

JavaScript is in the midst of transforming development teams’ expectations for desktop, server and mobile apps. Enhancements to JavaScript are enabling it to break free of the browser, while technologies such as Node.js and its package manager npm facilitate creation of portable front-end and back-end apps that rival those traditionally created for environments such as Windows, Linux and mobile devices.
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Sneak peek for my synchronous rendering talk in #ReactNativeEU in 2 weeks.. a working PoC! …

  • Updates made to React components from the JavaScript thread are batched together periodically and sent over the React Native bridge to be performed in the native realm (eventually on the main thread).
  • If we had some way to render components directly from the native realm without going to the JavaScript realm, we could use this ability to remove the overhead in the above scenarios.
  • In JavaScript, a React component will be registered in the exact same way under a new registry called :

    From the native side, the would support two main actions: being created and updating its props.

  • Since the React logic for the synchronous components is still defined in JavaScript, when the component is registered in (usually on JavaScript initialization), we’re going to create a serializable template recipe of how to instantiate it from native.
  • We can eventually port all the core React Native components to be part of this family, just by moving any business logic they have in JavaScript to native.

rn-synchronous-render – Experiments with synchronous rendering in React Native
Continue reading “Sneak peek for my synchronous rendering talk in #ReactNativeEU in 2 weeks.. a working PoC! …”

React Native App Development Company

Do you know? #ReactNative gives fantastic benefits of increased productivity.  #Mobileapp

  • Businesses always search for the apps offering optimum user experience, quick to market and run on maximum platform or devices.
  • Since, the Hybrid mobile apps have become the most effective channel of achieving business goals, it requires the capable tech partner such as byPeople Technology.
  • We are a React Native Development Company developing apps that run on Androind, iOS, Windows, and other known platforms offering native UI experience.
  • We create extremely convincing “Native” Hybrid mobile applications with React Native.

We are top rated React Native app development company. Hire ReactNative Expert or Team for Hybrid iOS/Android app development.
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Implementing Barcode scanner in react-native

  • Follow me at @manojnegiwd
    Implementing Barcode scanner in react-native

    I searched a lot around the web the only promising camera library I can found for react-native is react-native-camera.

  • Let’s use react-native-camera and implement a barcode scanner in react-native.
  • Let’s create a dummy react component, In our scanner.js file add

    Let’s import react-native-camera into our component

    Now in your render function use camera like this

    Pretty easy huh ?

  • Inside it, we used a Camera component gave it’s style flex:1 to make it fit the whole view.
  • Now go scan some barcode and have fun 🙂

    Here is the full component in one code snippet

    Loved this article ?

I searched a lot around the web the only promising camera library I can found for react-native is react-native-camera. Let’s use react-native-camera and implement a barcode scanner in react-native…
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