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Webpack, Webpack presets design, React native & more… React News Sunday, February 25

React News TLDR / Table of Contents

  • – Whats new?There are so many new things in webpack 4, that I cant list them all or this post would last forever.
  • Currently built, we now have 5 module types implemented: – javascript/auto: (The default one in webpack 3) JavaScript module with all module systems enabled: CommonJS, AMD, ESMjavascript/esm: EcmaScript modules, all other module system are not available (the default for.
  • json extensions in this order to resolveWhats most exciting about this feature, is that now we can continue to work on our CSS and HTML module types (slated for webpack 4.
  • If you use HtmlWebpackPluginFor this release, we gave the ecosystem a month to upgrade any plugins or loaders to use the new webpack 4 APIs. However, Jan Nicklas has been away with work obligations and therefore, we have provided a patched fork of html-webpack-plugin.
  • Ill personally send you a screen shot of each one if youd like Whatsnext?We have already started planning our next set of features for webpack 4.

Tags: webpack, webpack presets design, legato, old JS Framework, largest OpenCollective sponsor

  • Expo gives us access to DocumentPicker and ImagePicker to pick up a document or image from our phone.
  • import React from ‘react’; – import PropTypes from ‘prop-types’; – import { connect } from ‘react-redux’; – import { StyleSheet, Image, View } from ‘react-native’; – import { DocumentPicker, ImagePicker } from ‘expo’; – import { Button, Text, Header } from { SERVER_URI, PostFunStuff } from ‘.
  • /constant’;class FunPost extends React.Component { – constructor(props) { – super(props); – this.state = { – image: null, – }; – this.postFunStuff = this.postFunStuff.bind(this); – this.pickDocument = this.pickDocument.bind(this); – this.pickImage = this.pickImage.bind(this); – this.postPic = this.postPic.bind(this); – }pickDocument = async () = { – const result = await console.log(‘result’, result); -…
  • postPicture() { – const apiUrl = `${SERVER_URI}/upload`; – const uri = this.state.image; – const uriParts = uri.split(‘.’); – const fileType = uriParts[uriParts.length – 1];const formData = new FormData(); – formData.append(‘photo’, { – uri, – name: `photo.
  • ${fileType}`, – type: `image/${fileType}`, – });const options = { – method: ‘POST’, – body: formData, – headers: { – Accept: ‘application/json’, – ‘Content-Type’: ‘multipart/form-data’, – }, – };return fetch(apiUrl, options); – }postDocument() { – const apiUrl = `${SERVER_URI}/upload`; – const { name, uri } = this.state.image; – const uriParts =…

Tags: React Native, open source toolchain, return fetch, new FormData, Amazon S3 documentation

  • For example, if you have a local MongoDB running on port , you would need to do this before running the project: – – You can grep the project source code for to figure out what environment variables it needs in order to work correctly.
  • The curly braces vs. parentheses problem above is also confusing when you want to create a short arrow function that returns a plain-old object.
  • If the component has children content, it might look like this: – – If the component does not have children, you can write it with open/closing tags or just a self-closing tag: – – The following use is invalid: – – If you misplace the character, you will get errors…
  • For example: – – I used the method inside the method with because inside , the keyword refers to the component instance associated with the DOM element that represents the component.
  • You should see the object in the console when you execute the code above: – – However, when you use the same method in a delayed-execution channel, such as an event handler, the caller will no longer be explicit and the line will not report the component instance.

Tags: curly braces, arrow function, short arrow function, React, web server

  • Open a Terminal in your project’s folder and run, – – After installation, you’ll need to link your root component in from .
  • It’s a good idea to wrap the component which is passed to .
  • The component provides the theme to all the components in the framework.
  • It also acts as a portal to components which need to be rendered at the top level.
  • You can provide a custom theme to customize the colors, fonts etc. with the component.

Tags: docs, Feb, Dialog Feb, docs docs, comment script Feb

  • If this was a WordPress website the language we would be using on the server side would be PHP, but we would still be using JavaScript on the client side for any browser trickery such as the image sliders mentioned.
  • When you visit this website, the first page is delivered from the server then further page changes are handled client side.
  • Lighthouse is available within the Google Chrome browsers development tools, allowing you to quickly audit any of your web pages for Progressive Web Apps, Performance, Best Practices and Accessibility.
  • I hope in the future that this new website will convince clients to avoid WordPress and use the fantastic Cosmic JS API to build apps and manage content.
  • Carson Gibbons is the Co-Founder CMO of Cosmic JS, an API-first Cloud-based Content Management Platform that decouples content from code, allowing devs to build slick apps and websites in any programming language they want.

Tags: Cosmic JS, Cosmic JS API, Jason Foster, api-first cloud-based content, cloud-based content management

  • The Dilemma: More Data, Less Responsive Candidates – – Speaking with recruiting veteran and founder of Reveal Global Marc Hutto confirmed many of the impressions Ive been forming about the evolution of our industry.
  • Hutto tells me its increasingly common for candidates in the tech sector to mark their social media profiles with No Recruiters or to simply strip their profiles of most information so that they cease to appear in recruiters search results.
  • This is leading candidates to become less responsive to all recruiter approaches.
  • Huttosays candidates will open up and have candid conversations provided they feel they can trust the recruiter theyre talking to.
  • On the other hand, when Huttos team explicitly states that they dont stand to earn any fee if the candidate takes the job, the conversation changes dramatically.

Tags: candidates, social media, Responsive Candidates, job board owners, Giving Candidates

  • Modern Web Development is challenging and the way we develop web apps are now different is one of the reasons why I jumped to React ecosystem.
  • Now, this poses a serious challenge to both newcomers and developers who has been around web development for quite some time now as you need to know how to bundle your javascript apps, use either grunt, or gulp, browserify, webpack, and so on.
  • If were just starting out in getting the feel of modern web development, learning Angular will eat your time to actually get started in building a real-world app.
  • You have little time to study the ins and outs of other setups for modern web app.
  • Because of how fast you can learn and build web apps with React, you can also learn other parts of building modern web apps more efficiently.

Tags: React, Angular, modern web development, React ecosystem, javascript

  • The handleSubmit() function does two things; it logs the current value of the input element whenever the form is submitted and most importantly it prevents the default HTML form behavior of browsing to a new page.
  • Now that weve seen how React deals with forms and how to ensure that the values are in sync with the state, lets build a proper form with different types of fields, that is, input, textarea, select, radio e.t.c – The code block/demo below has all the code needed to…
  • In the code block above, the handleChange function uses the name attribute that was assigned to the different input elements to determine what to do based on the value of the textarea field also works in a similar fashion to that of the input field.
  • Formik transfers the results of mapPropsToValues into updatable form state and makes these values available to the new component as could a function that returns a Yup Schema or an actual Yup schema itself.
  • All of the details gotten from the form is stored in values, validation errors are stored in errors, touched is a boolean value that checks if an input field is in focus, handleChange helps to perform a certain function whenever theres a change in an input field and isSubmitting is…

Tags: form, object schema validator, React, state,

  • For example, if you have a local MongoDB running on port , you would need to do this before running the project: – – You can grep the project source code for to figure out what environment variables it needs in order to work correctly.
  • The curly braces vs. parentheses problem above is also confusing when you want to create a short arrow function that returns a plain-old object.
  • If the component has children content, it might look like this: – – If the component does not have children, you can write it with open/closing tags or just a self-closing tag: – – The following use is invalid: – – If you misplace the character, you will get errors…
  • For example: – – I used the method inside the method with because inside , the keyword refers to the component instance associated with the DOM element that represents the component.
  • You should see the object in the console when you execute the code above: – – However, when you use the same method in a delayed-execution channel, such as an event handler, the caller will no longer be explicit and the line will not report the component instance.

Tags: curly braces, arrow function, short arrow function, React, web server

  • A folder for your code, a folder for your demo app (plus dev server and hot loading, yay\o/), a folder that you should use and I didnt, some build stuff for shipping… – – Basically, it gives you everything you need so you can focus on your component and dont…
  • You need a demo page so you can show off your component in action.
  • react-lazyload-fadein, for example, has a demo page that shows off different ways you can use it.
  • People will find out about your component in different ways.
  • Especially if someone could figure out how to slurp in the README file and make that demo page for you – – The React community is a bit silly and loves to invent new patterns to bicker about.

Tags: demo page, component, open source, complex expensive components, fade-in effect

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