@tapjs/typescript

@tapjs/typescript

A default tap plugin providing typescript support.

USAGE

This plugin is installed with tap by default. If you had previously removed it, you can tap plugin add @tapjs/typescript to bring it back.

When enabled, this plugin does the following things:

• adds ts, tsx, cts, mts, and jsx to the file extensions that tap will load.
• adds ts-node/esm to the loader set.
• adds the typecheck config flag, which is true by default

The typecheck config defaults to being set, and type checking your tests is generally a good idea. However, it is also often considerably slower, adding as much as half a second to each test suite file, which can be painful if you have a lot of test files.

You can disable type checking with --no-typecheck on the command line, or by putting typecheck: false in .taprc, or { "tap": { "typecheck": false }} in package.json, or TAP_TYPECHECK=0 in the environment.

If you find that your typescript tests are taking too long to run, and decide to disable type checking, it is best to enable it in CI, for example by setting TAP_TYPECHECK=1 in the environment.

The "skipLibCheck": true option in tsconfig will also speed things up a bit, at the expense of some type safety.