Pretty TypeScript Errors

Make TypeScript errors prettier and human-readable in VSCode.

  

TypeScript errors become messier as the complexity of types increases. At some point, TypeScript will throw on you a shitty heap of parentheses and "...".
This extension will help you understand what's going on. For example, in this relatively simple error:

   

Watch this

Features

• Syntax highlighting with your theme colors for types in error messages, supporting both light and dark themes
• A button that leads you to the relevant type declaration next to the type in the error message
• A button that navigates you to the error at typescript.tv, where you can find a detailed explanation, sometimes with a video
• A button that navigates you to ts-error-translator, where you can read the error in plain English

Supports

• Node and Deno TypeScript error reporters (in .ts files)
• JSDoc type errors (in .js and .jsx files)
• React, Solid and Qwik errors (in .tsx and .mdx files)
• Astro, Svelte and Vue files when TypeScript is enabled (in .astro, .svelte and .vue files)

Installation

code --install-extension yoavbls.pretty-ts-errors

Or simply by searching for pretty-ts-errors in the VSCode marketplace

Why isn't it trivial

1. TypeScript errors contain types that are not valid in TypeScript.
   Yes, these types include things like ... more ..., { ... }, etc in an inconsistent manner. Some are also cutting in the middle because they're too long.
2. Types can't be syntax highlighted in code blocks because the part of type X = ... is missing, so I needed to create a new TextMate grammar, a superset of TypeScript grammar called type.
3. VSCode markdown blocks all styling options, so I had to find hacks to style the error messages. e.g., there isn't an inlined code block on VSCode markdown, so I used a code block inside a codicon icon, which is the only thing that can be inlined. That's why it can't be copied. but it isn't a problem because you can still hover on the error and copy things from the original error pane.

Hype section

Stars from stars

Kent C. Dodds

Matt Pocock

Alex / KATT

Tanner Linsley

Theo Browne

Sponsorship

Every penny will be invested in other contributors to the project, especially ones that work
on things that I can't be doing myself like adding support to the extension for other IDEs 🫂

Contribution

Help by upvoting or commenting on issues we need to be resolved here
Any other contribution is welcome. Feel free to open any issue / PR you think.