svelte-preprocess VS ts-jest

Compare svelte-preprocess vs ts-jest and see what are their differences.

svelte-preprocess

A ✨ magical ✨ Svelte preprocessor with sensible defaults and support for: PostCSS, SCSS, Less, Stylus, Coffeescript, TypeScript, Pug and much more. (by sveltejs)

ts-jest

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript. (by kulshekhar)
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svelte-preprocess ts-jest
16 14
1,349 5,807
2.9% -
8.2 9.7
12 days ago 6 days ago
TypeScript TypeScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.

svelte-preprocess

Posts with mentions or reviews of svelte-preprocess. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-27.
  • Attempting to add math rendering to mdsvex, but encountering an error
    1 project | reddit.com/r/sveltejs | 22 May 2022
    import adapter from '@sveltejs/adapter-auto'; import preprocess from 'svelte-preprocess'; import { mdsvex } from 'mdsvex'; import remarkMath from 'remark-math'; import rehypeKatex from 'rehype-katex-svelte'; /** @type {import('@sveltejs/kit').Config} */ const config = { extensions: ['.svelte', '.svx', '.md'], // Consult https://github.com/sveltejs/svelte-preprocess // for more information about preprocessors preprocess: [ preprocess(), mdsvex({ extensions: ['.svx', '.md'], smartypants: true, layout: { project: "./src/routes/projects/layout.svelte", post: "./src/routes/blog/layout.svelte", }, remarkPlugins: [remarkMath], rehypePlugins: [rehypeKatex], }), ], kit: { adapter: adapter({ edge: false, external: [], split: false }) } }; export default config;
  • PostCSS- NESTED --- How can i use it inside a component
    3 projects | reddit.com/r/sveltejs | 27 Apr 2022
    Have you tried https://github.com/sveltejs/svelte-preprocess
  • Creating your first Svelte App with SvelteKit
    1 project | dev.to | 24 Feb 2022
    // We have changed the adapter line to use [email protected] import adapter from '@sveltejs/[email protected]'; import preprocess from 'svelte-preprocess'; /** @type {import('@sveltejs/kit').Config} */ const config = { // Consult https://github.com/sveltejs/svelte-preprocess // for more information about preprocessors preprocess: preprocess(), kit: { // We have changed this to point to a build directory adapter: adapter({ out: 'build' }) } }; export default config;
  • Supercharge Web DX in Svelte way
    5 projects | dev.to | 20 Feb 2022
    // svelte.config.js import preprocess from 'svelte-preprocess' import adapter from '@sveltejs/adapter-static' /** @type {import('@sveltejs/kit').Config} */ const config = { // Consult https://github.com/sveltejs/svelte-preprocess // for more information about preprocessors preprocess: [preprocess({ postcss: true })], kit: { // I can even build php file which I can use in current project seamlessly! adapter: adapter({ fallback: 'myapp.php' }), files: { assets: 'src/assets', }, appDir: 'myapp', } } export default config
  • Always an error on build with ?. Operations
    1 project | reddit.com/r/sveltejs | 15 Jan 2022
    Do you use and svelte-preprocess?
  • SvelteKit error: "[vite] Error when evaluating SSR module" when using ssh2-promise
    2 projects | reddit.com/r/sveltejs | 5 Jan 2022
    /** @type {import('@sveltejs/kit').Config} */ const config = { // Consult https://github.com/sveltejs/svelte-preprocess // for more information about preprocessors preprocess: preprocess(),
  • Comment créer une application Electron avec vite
    1 project | dev.to | 9 Dec 2021
    // svelte.config.js const sveltePreprocess = require('svelte-preprocess'); module.exports = { // Consult https://github.com/sveltejs/svelte-preprocess // for more information about preprocessors preprocess: sveltePreprocess(), };
  • Testing Svelte components with Jest and Vite
    8 projects | dev.to | 18 Nov 2021
    We need to configure Jest to transform our files. We must explicitly set our test environment to jsdom, which we are using through Jest. Since v27 Jest's default test environment is node. I will put the configuration in a specific Jest configuration file called jest.config.json in the project root folder. If you create a configuration file called jest.config.js, Vite will complain as it expects only ESM JavaScript by default. Vite will recommend that you rename it to a ".cjs" file if you want to do it that way. You can look at the different ways to configure Jest if you are unsure about the file conventions. If you're using TypeScript, you need to configure svelte-preprocess and ts-jest also, see the svelte-jester docs for how to do that.
  • What if someone made a better svelte? Would people be interested?
    3 projects | reddit.com/r/sveltejs | 20 Oct 2021
    If you want to write pug, there are tools that allow you to do that: https://github.com/sveltejs/svelte-preprocess
  • Getting started with Svelte, Tailwind, and Nrwl NX
    7 projects | dev.to | 17 Oct 2021
    All this file does is export a configuration object for the build of our Svelte application. By default, it uses the svelte-preprocess package, which is a preprocessor for Svelte providing support for PostCSS, SCSS, TypeScript, and much more.

ts-jest

Posts with mentions or reviews of ts-jest. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-05-18.
  • Improve your Testing with Custom Matchers in Jest
    2 projects | dev.to | 18 May 2022
    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
    3 projects | dev.to | 20 Apr 2022
  • A complete guide to full-stack live reload
    9 projects | dev.to | 16 Mar 2022
    See the Jest configuration docs to learn more about Jest configuration. ts-jest also has good documentation.
  • Setup Jest to React Typescript Vite project, also SWC (part 1)
    13 projects | dev.to | 14 Mar 2022
    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.
  • Component Testing in Svelte
    6 projects | dev.to | 19 Feb 2022
    ts-jest: A transformer for handling TypeScript files.
  • Running Jest for Typescript CLI - unexpected token at import
    1 project | reddit.com/r/typescript | 22 Jan 2022
    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.
  • The Ultimate Guide to TypeScript Monorepos
    17 projects | dev.to | 26 Nov 2021
    Thankfully using TypeScript and TypeScript project references makes the intricate problem of using Jest easier since we can make use of the excellent ts-jest Jest transformer. All we need to do it point ts-jest to the respective tsconfig.json file for each package (see example jest.config.js). Since we have configured TypeScript to be composite and incremental, we do not need to recompile TypeScript for dependencies of a package we want to test, which significantly reduces the runtime for unit tests. ts-jest will also ensure that any error message will reference the line numbers in the source TypeScript files.
  • Testing Svelte components with Jest and Vite
    8 projects | dev.to | 18 Nov 2021
    We need to configure Jest to transform our files. We must explicitly set our test environment to jsdom, which we are using through Jest. Since v27 Jest's default test environment is node. I will put the configuration in a specific Jest configuration file called jest.config.json in the project root folder. If you create a configuration file called jest.config.js, Vite will complain as it expects only ESM JavaScript by default. Vite will recommend that you rename it to a ".cjs" file if you want to do it that way. You can look at the different ways to configure Jest if you are unsure about the file conventions. If you're using TypeScript, you need to configure svelte-preprocess and ts-jest also, see the svelte-jester docs for how to do that.
  • Lab 8: TESTING !!!!
    1 project | dev.to | 17 Nov 2021
    To be able to use Jest proficiently with Typescript, we will need help from ts-jest so as to use the advantage of a type-safe language
  • What does it take to support Node.js ESM?
    9 projects | dev.to | 12 Aug 2021
    There are workarounds, but nothing actually works in 100% of the possible use-cases (see for example, ts-jest issue), and for that reason, we recommend tooling that enables this type of building without needing any workaround, usually using Rollup and/or esbuild.

What are some alternatives?

When comparing svelte-preprocess and ts-jest you can also consider the following projects:

bob-esbuild - Building and Running TypeScript projects efficiently with rollup + esbuild

jest - Super-fast alternative for babel-jest or ts-jest without type checking

esbuild - An extremely fast JavaScript and CSS bundler and minifier

tsc-esm-fix - Make TS projects compatible with esm/mjs requirements

postcss-preset-env - Convert modern CSS into something browsers understand

vite - Next generation frontend tooling. It's fast!

SvelteKit - The fastest way to build Svelte apps

svelte-vite-jest-template - Svelte template based on Vite's Svelte template, but includes unit testing setup (Jest and Svelte Testing Library).

svelte-i18n - Internationalization library for Svelte

sveltekit-blog-template - A SvelteKit blog template