Test JavaScript/TypeScript code everywhere -

in browsers, Node.js or Deno

All frameworks supported

Maximize performance

Launch the tests in parallel. Choose the isolation level - from same context (fastest, no isolation) to separate process (slower, clean context for every test)

Enjoy the first-class ergonomics

Siesta provides the accurate and very readable JSON diff for the deep equality assertion. Differences in the data are highlighted to be easily noticeable.

Get started in your environment: