ts-jest
parcel
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ts-jest | parcel | |
---|---|---|
18 | 167 | |
6,839 | 43,097 | |
- | 0.2% | |
8.0 | 9.4 | |
12 days ago | about 11 hours ago | |
TypeScript | JavaScript | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ts-jest
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In-Depth guide for TypeScript Library
use ts-jest and set up Paths Re-Map
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Having issues with passing a Typed object to a func... TS isn't warning when properties of said arg are the wrong type
Jest's out of the box config for TS doesn't do any type checking. You can integrate https://kulshekhar.github.io/ts-jest/ or you can call ātscā yourself separately
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Is using Jest for anything other than React a bad idea?
ts-jest has had some strange performance issues and workarounds in the past, though I havenāt used it very recently so it might have fixed those by now.
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Test-Driven Infrastructure Development with Pulumi and Jest
Since we're working with TypeScript, we can use ts-jest, which conveniently brings Jest along for the ride:
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Improve your Testing with Custom Matchers in Jest
I want to save you from manually copying the snippets one by one, so here is a Gist with the complete test file. This can be easily executed with Jest (or ts-jest for TypeScript).
- Testing Mongoose with Ts-Jest
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A complete guide to full-stack live reload
See the Jest configuration docs to learn more about Jest configuration. ts-jest also has good documentation.
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Setup Jest to React Typescript Vite project, also SWC (part 1)
Using @swc/jest to compile code to CommonJS is much faster than babel-jest, ts-jest which have long cold starts when executing tests in a large project.
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Component Testing in Svelte
ts-jest: A transformer for handling TypeScript files.
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Running Jest for Typescript CLI - unexpected token at import
Anyway, I ran into this exact error this morning setting up Jest for a TS script. I fixed it by just following the getting started instructions for Jest as well as ts-jest.
parcel
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React Server Components Example with Next.js
In the Changelog Podcast episode referenced above, Dan Abramov alluded to Parcel working on RSC support as well. I couldnāt find much to back up that claim aside from a GitHub issue discussing directives and a social media post by Devon Govett (creator of Parcel), so I canāt say for sure if Parcel is currently a viable option for developing with RSCs.
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JS Toolbox 2024: Bundlers and Test Frameworks
Parcel 2 emphasizes a zero-configuration approach to bundling web applications. It's a powerful tool that offers a hassle-free developer experience, focusing on simplicity and speed.
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Build a Vite 5 backend integration with Flask
Once you build a simple Vite backend integration, try not to complicate Vite's configuration unless you absolutely must. Vite has become one of the most popular bundlers in the frontend space, but it wasn't the first and it certainly won't be the last. In my 7 years of building for the web, I've used Grunt, Gulp, Webpack, esbuild, and Parcel. Snowpack and Rome came-and-went before I ever had a chance to try them. Bun is vying for the spot of The New Hotness in bundling, Rome has been forked into Biome, and Vercel is building a Rust-based Webpack alternative.
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What is JSDoc and why you may not need typescript for your next project?
Parcel
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Building Node.js applications without dependencies
Iāve tried something similar on the frontend side: I decided to build a UI for Ollama.ai using only HTML, CSS, and JS (Single-Page Application). The goal is to learn something new and have zero runtime dependencies on other projects and NPM modules. Only Node and Parcel.js (https://parceljs.org/) are needed during development for serving files, bundling, etc. The only runtime dependency is a modern browser.
Here's what I have found so far:
- JavaScript (vanilla) is a viable alternative to React.js
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11 Ways to Optimize YourĀ Website
Besides Webpack, there are many other popular web bundlers available, such as Parcel, Esbuild, Rollup, and more. They all have their own unique features and strengths, and you should make your decision based on the needs and requirements of your specific project. Please refer to their official websites for details.
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Bun vs Node.js: Everything you need to know
In the Node.js ecosystem, bundling is typically handled by third-party tools rather than Node.js itself. Some of the most popular bundlers in the Node.js world include Webpack, Rollup, and Parcel, offering features like code splitting, tree shaking, and hot module replacement.
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JavaScript Gom Jabbar
There are projects attempting to do more things. I've really enjoyed Parcel (https://parceljs.org). But it won't handle things like linting or unit testing, which you may or may not want. Vite is also pretty popular (https://vitejs.dev/), and it has a test runner.
Thing is, most of the problems described in the post aren't related to low-JS front-end libraries like HTMX or alpine. You can write React without a linter, bundler, build tool, unit testing, or linting. But with any of these projects at scale, you start wanting more:
- If you want to write unit tests in JS, you need to choose a test runner (probably Jest or Vitest -- until the built-in node testing module becomes more common).
- If you want linting, you need a linter (probably Eslint). If you want type safety, you need a type checker (probably Typescript).
- If you want to create smaller JS files to ship to production and to automatically handle assets, you need a bundler.
- If you want to use new language features while supporting old browsers, you need polyfills.
- If you want to use all these things together, you need something to bring it together (like Webpack).
So it really depends what you need! You may not need any. But as you can imagine, in many professional projects with multiple developers it's very nice to have unit tests, linting, and type checking :) (And you start caring about end-user performance a lot more, in which case optimizing the shipped bundle is important.)
Take all that, and then compare to a language like Rust, which has most of the "ecosystem stuff" built-in. In Rust, you get the test runner, the linter, dependency manager, type checker, and documentation tool all included. Easy! Thankfully, Rust doesn't have to care about whether users support modern language features (because it compiles down to lower code ahead of time), or whether the binary shipped to the client is optimally organized for downloading immediately over the internet.
It's a problem in JS because A) you have to care about more problems than many other languages since JS needs to load instantly over the wire in a web browser, and B) there is a huge amount of choice and not a lot of standardization in web tools. (And what standardization there is (Node, npm), there are still competitors trying to even further reduce the pain points.)
I think that in ten more years, we'll be in a better place, because there is push back (like this post!) against these problems, which will encourage more tools trying to solve the explosion of tools. Which seems counterintuitive, but these tools were created to solve very real problems. So I see it as a pendulum which has swung too far, but will likely swing back to a more balanced place. And you see that with tools like Vite gaining popularity.
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Whatever It Takes
My first challenge here was the migration from vanilla JS to utilizing tools like Parcel and React. React, I was a bit familiar with; however, I had never heard of Parcel.js in my life. Several days were spent troubleshooting why my build process was not working on Netlify before I finally found out that I had to set up my Netlify Build Settings specifically for using a bundler like Parcel.js
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How To Secure Your JavaScript Applications
Bundling: Webpack, Parcel, Rollup
What are some alternatives?
jest - Super-fast alternative for babel-jest or ts-jest without type checking. Please use main repository for issues
vite - Next generation frontend tooling. It's fast!
esbuild - An extremely fast bundler for the web
tsup - The simplest and fastest way to bundle your TypeScript libraries.
gulp - A toolkit to automate & enhance your workflow
bob-esbuild - Building and Running TypeScript projects efficiently with rollup + esbuild
Next.js - The React Framework
tsc-esm-fix - Make Typescript projects compatible with esm/mjs requirements
webpack - A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.
svgr - Transform SVGs into React components š¦ [Moved to: https://github.com/gregberge/svgr]
Rollup - Next-generation ES module bundler