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    6.0.0-alpha-3 • Public • Published


    Siesta is a stress-free, ubiquitous, open-source JavaScript/TypeScript testing tool, developed at Bryntum starting from the 2009.

    Version 6 is a complete rewrite, using a modern technology stack and the decade of test driven development experience.

    Main features:

    • One test tool to run them all. Siesta can run tests in browsers, Node.js and Deno environments.
    • Supports parallel execution
    • Provides accurate and well-formatted deep diff for equality assertion

    Siesta powers the test suites of all Bryntum products and thousands of our clients.

    Supported target environments

    Siesta can run the test in browsers, Node.js and Deno.

    Siesta supports modern, ever-green browsers only - Chrome, Firefox, Safari and Edge Chromium. IE and legacy Edge are not supported.

    Siesta supports all maintained LTS releases of Node.js.

    Siesta supports the latest release of Deno.


    Node.js environment:

    npm install @bryntum/siesta --save-dev

    Deno environment:

    deno install -n siesta -A -q --unstable --no-check https://cdn.jsdelivr.net/npm/@bryntum/siesta@latest/bin/siesta-deno.js

    Build statuses

    Build Node.js Deno Chrome Firefox Safari
    Siesta isomorphic Node.js build status Deno build status Chrome build status Firefox build status Safari build status
    Siesta Node.js 12 Node.js 12 build status
    Siesta Node.js 14 Node.js 14 build status
    Siesta Node.js 16 Node.js 16 build status
    Siesta Deno Deno build status


    Please start reading from one the following guides, corresponding to the environment, in which you'd like to run the tests:

    Getting started with Siesta in Node.js environment

    Getting started with Siesta in Deno environment

    Getting started with Siesta in browser environment

    Github repo



    We welcome all feedback - please tell us what works well in Siesta, what causes trouble and what any other features you would like to see implemented.

    Please report any found bugs in the issues tracker

    Ask questions in the forum

    Chat live at Discord

    Follow the development blog


    MIT License

    Copyright (c) 2009-2021 Bryntum, Nickolay Platonov


    npm i @bryntum/siesta

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