Skip to main content
Version: v4.18

Testing Config

The testing config setting in stencil.config.ts specifies an object that corresponds to the jest configuration that should be used in your tests. Stencil provides a default configuration, which you likely won't need to edit, however it can be extended with the same configuration options as Jest. See the Configuring Jest Guide for configuration details.


Keep in mind that the usual way of configuring Jest (package.json and jest.config.js) is not used with the stencil testing command. Jest can still be used, but configuring the presets, transpilation and setting up the correct commands must be done by the project.

Some additional Stencil specific options may be set here as well for configuring the e2e tests.