Deprecation notice

[mrazauskas]

tsd-lite is deprecated.

Support for TypeScript 6 or any new features will not be added.

Meet TSTyche

I recommend migrating to TSTyche – The Essential Type Testing Tool.

It is a freshly published type testing tool. I developed it recently. A simple idea (jest-community/jest-runner-tsd#32) turned into two years of researching and tinkering. TSTyche has a lot to offer, here are just few highlights:

• testing on specific versions of Typescript: tstyche --target 5.0,latest;
• helpers like test() and describe() with .only, .skip run mode flags;
• expect style assertions to compare two types, or two expressions, or a type with an expression, or an expression with a type;
• .toRaiseError() matcher to capture exact error message.

Visit https://tstyche.org to view the full documentation.

Migration

As a reference, here are the few migration / usage PRs:

Jest

• chore: migrate the Config type test to TSTyche jestjs/jest#14687
• chore: migrate few more type tests to TSTyche jestjs/jest#14786

RedwoodJS

• chore: migrate type tests to TSTyche redwoodjs/redwood#9394

Typegoose

• chore: migrate type tests to TSTyche typegoose/typegoose#894

better-enums

• chore: migrate type tests to TSTyche matejchalk/better-enums#1

.d.ts declaration testing in a JavaScript package:

docusaurus-remark-plugin-tab-blocks

• feat: add type definitions file docusaurus-remark-plugin-tab-blocks#212