ts-jest
tsc-esm-fix
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ts-jest | tsc-esm-fix | |
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18 | 2 | |
6,847 | 67 | |
- | - | |
8.0 | 7.8 | |
17 days ago | 18 days ago | |
TypeScript | TypeScript | |
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 ‘tsc’ 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 haven’t 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.
tsc-esm-fix
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TypeScript is now officially 10 years old
Probably because it compiles them to a pre-standard ES5-compatible implementation based on good ol' `Foo.prototype`. And since they've already handled them one way, they can't become spec-compliant without breaking backwards compatibility.
The other place where this shines through particularly egregiously is the support of ESM static import/export. Everybody's build tools been compiling that back down to CJS so hard that Node.js 16+ introduced intentional incompatibilities between CJS and ESM modes just to get people to finally switch to the standards-compliant module system. So you end up in a situation where the library is written in TypeScript with ESM syntax but the only available browser build is a CJS blob which completely defeats the main touted benefit of static imports/exports, namely dead code elimination...
So you decide what the hell, let's switch TSC to ESM and moduleResolution node16, and end up having to use something like https://github.com/antongolub/tsc-esm-fix because the only allowed fix for TSC doing the wrong thing is at the completely wrong level - https://www.typescriptlang.org/docs/handbook/esm-node.html - if you don't see what's wrong with that, you're one of today's lucky 10000...
- TS and ts-jest meet “type”: “module”
What are some alternatives?
jest - Super-fast alternative for babel-jest or ts-jest without type checking. Please use main repository for issues
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
esbuild - An extremely fast bundler for the web
react-pair - 🖇️ Util to help with the paired hook pattern
tsup - The simplest and fastest way to bundle your TypeScript libraries.
aleph.js - The Full-stack Framework in Deno.
bob-esbuild - Building and Running TypeScript projects efficiently with rollup + esbuild
tsx - ⚡️ TypeScript Execute: Node.js enhanced to run TypeScript & ESM
svgr - Transform SVGs into React components 🦁 [Moved to: https://github.com/gregberge/svgr]
node-win32-api - win32 api
SvelteKit - web development, streamlined
proposal-type-annotations - ECMAScript proposal for type syntax that is erased - Stage 1