![]() A lot of NPM packages expect this stuff to just work. Bundlers take care of a lot of implicit stuff, like polyfilling missing features.Tooling is needed to fix the module resolution. Packages use a short-cut method of importing other packages by their package name, without an extension ( bare imports), e.g.: import groupBy from lodash/groupBy instead of import groupBy from './node_modules/lodash/groupBy.js.Publishing a package using pure ES Modules would break that compatibility. NPM packages are expected to use the CommonJS format to ensure everything is compatible with each other. The NPM ecosystem is built around packages being able to run in NodeJS, not primarily for the web.Let's start with the main reasons we still need bundlers in 2022: Supports latest stable version of Chrome, Firefox, Safari, Edge.We still want to be able to use NPM packages.Implement the TodoMVC app using this specification.We are going to build a simple TODO application such as this one, which is fully client side and has a clear scope. In fact, the approach below could be used in a good old multi-page website, where you sprinkle the JS on top of the page to create the interactive ToDo functionality. Not every website needs to be a SPA, mind you. These interactive client side apps are often Single-Page Applications: a web application that loads a single document and then updates the page content using JavaScript by loading other modules and fetching data from a REST API. They all come with a set of supporting tools to smooth out the development process: translate modern JavaScript features to something all target browsers understand, manage dependencies, optimize the output code, etc. These frameworks are mostly abstractions and best practises to help you create modular code while staying productive. When building an interactive web app, developers usually reach for frameworks such as React, Angular, Vue, Svelte, to name a few. Here's the source code and the end result: The starting point is just a HTML document with a that initializes our app, while SPAs often start from an index.js entry point and try to control the document from there. ![]() What matters most is the fact that we simplify our development process by cutting out tools that are required to work with these modern day frameworks. I will use some libraries related to React, but you could write the app using anything you prefer (or no library at all). In this article I'm going to implement the TodoMVC app without any build tools and only use native JS functions supported by evergreen browsers (sorry Internet Explorer, it's time for you to leave). What if I told you, you can build modern web apps and have still have a smooth development workflow without any build tools? Do you remember the time before front-end frameworks and build tools, where you would sprinkle some JavaScript on top of your HTML to create interactivity? Code up your HTML documents, preview them in the browser without tools like Webpack, then push them to your webserver using FTP? Instead of the standard module imports, you can import from a CDN like so: import = render (html ` ` ) Ĭonst image = getByAltText ( 'A lovely image' ) Įxpect (image. I knew Preact was a tiny library that shared a lot of APIs with React, but it wasn’t until I read their getting started guide that I realised it now offered a way of working that avoids the standard build step that comes with pretty much all JavaScript these days. Testing Preact + HTM | Sam Strong Dot DevĪs part of the never ending work that is teaching myself "modern" front end development, I decided to take a look at Preact.
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