Quokka.js
UnclaimedRun JavaScript and TypeScript with instant feedback directly in your code editor.
Visit WebsiteFreemiumVisit Website
Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Instant feedback and real-time execution in the editor.
Biggest con
Advanced features are locked behind the Pro (commercial) edition.
TL;DR - Quokka.js
- Provides instant JavaScript/TypeScript feedback directly in your editor.
- Displays runtime values, errors, and code coverage inline as you type.
- Offers advanced debugging features like Time Machine, Value Graphs, and Logpoints.
Pricing: Free plan available
Best for: Growing teams
What is Quokka.js?
Quokka.js is an in-editor playground for JavaScript and TypeScript that provides instant feedback on your code as you type. It eliminates the need for context switching by running directly within popular IDEs like VS Code, WebStorm, and Sublime, allowing developers to experiment, learn, and test code without leaving their familiar environment. It's designed for developers who want to quickly try out ideas, debug, or understand code execution without the overhead of setting up bespoke configuration files or using external online REPLs.
The tool offers real-time execution, displaying runtime values, errors, and code coverage inline. It leverages the same advanced technology as Wallaby.js, making years of research in JavaScript code instrumentation and execution available to users. Quokka.js is ideal for rapid prototyping, learning new language features, and debugging complex logic by visualizing data structures, tracking code execution over time, and exploring values interactively.
Available on: Web, Windows, macOS, Linux
Pros & Cons
Pros
- Instant feedback and real-time execution in the editor.
- Reduces context switching by integrating with popular IDEs.
- Powerful debugging and exploration features (Time Machine, Value Graphs).
- Free Community edition available.
- No configuration required for basic use.
Cons
- Advanced features are locked behind the Pro (commercial) edition.
- May have a learning curve for some advanced features.
Key Features
Live Execution and ResultsLive Coverage IndicatorsSnaps (context-aware code snippets)Interactive Runtime Value GraphsLogpointsTime MachineInteractive TimelineCodeclip Share feature
Pricing Plans
Community Free Edition
Free
Everything in all plans.
Personal Pro
Contact us
Everything in all plans, plus:
- Project Files Import
- Snaps (in JS, TS, Vue, and Svelte files)
- Logpoints and Live Value Display
- Value Peek
- Live Comments
- Value Explorer Pro
- Interactive Value Graphs Pro
- Interactive Timeline
Company Pro
Contact us
Everything in all plans, plus:
- Project Files Import
- Snaps (in JS, TS, Vue, and Svelte files)
- Logpoints and Live Value Display
- Value Peek
- Live Comments
- Value Explorer Pro
- Interactive Value Graphs Pro
- Interactive Timeline
Enterprise Pro
Contact us
Everything in all plans, plus:
- Project Files Import
- Snaps (in JS, TS, Vue, and Svelte files)
- Logpoints and Live Value Display
- Value Peek
- Live Comments
- Value Explorer Pro
- Interactive Value Graphs Pro
- Interactive Timeline
Included in all plans
- Live Code Execution and Results
- Time Machine
- Live Code Coverage
- Basic Value Explorer
- Basic Interactive Value Graphs
- Bun
- Recent Files
- Codeclip
Reviews
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Quokka.js FAQ
How does Quokka.js assist with rapid prototyping?
Quokka.js provides an in-editor playground for JavaScript and TypeScript, offering instant feedback as you type. This allows developers to quickly try out ideas and experiment with code without needing to set up extensive configurations or use external tools.
How does Quokka.js compare to CodeSandbox for JavaScript development?
Quokka.js integrates directly into popular IDEs like VS Code, providing instant feedback and execution within your existing development environment. CodeSandbox, conversely, is an online IDE and prototyping platform that operates in a browser.
What kind of user benefits most from Quokka.js?
Developers who want to quickly try out ideas, debug, or understand code execution without the overhead of setting up bespoke configuration files will find Quokka.js most beneficial. It is ideal for rapid prototyping and learning new language features.
Which teams would find Quokka.js most useful?
Teams focused on JavaScript and TypeScript development, particularly those involved in rapid prototyping, debugging complex logic, or exploring new language features, would find Quokka.js highly valuable. Its in-editor feedback loop streamlines development workflows.
Does Quokka.js include a free tier?
Yes, Quokka.js offers a free Community edition that provides core functionalities for instant feedback and code execution. Paid plans are available for users who require more advanced features and usage.
Can Quokka.js help with debugging complex logic?
Yes, Quokka.js is designed to assist with debugging complex logic by visualizing data structures, tracking code execution over time, and exploring values interactively. It displays runtime values, errors, and code coverage inline within the editor.
What are the trade-offs when using Quokka.js?
While Quokka.js offers a robust free Community edition, its more advanced features are exclusively available in the commercial Pro edition. Users may also experience a learning curve when utilizing some of these advanced functionalities.
Source: quokkajs.com