SparkJS

Live JS scratchpad. Free forever.

Fast local JavaScript scratchpad execution through Node, with stop controls and selection execution.

Why This Exists

SparkJS is built as a privacy-first, local-first alternative to Quokka-style scratchpads. The extension keeps core workflow data on the user's machine and focuses on the advanced workflow gaps documented in the NexForge build tracker.

Features

• Scratchpad creation
• Run current file
• Run selection
• Process timeout
• Stop running process

Commands

• sparkjs.run
• sparkjs.runSelection
• sparkjs.newScratchpad
• sparkjs.stop

Privacy

This extension is designed for local-first operation. Core data is stored in VS Code storage or workspace .vscode files where the feature explicitly supports Git sharing. No cloud service is required for the free v1.0 release.

Commercial Roadmap

The free v1.0 product is intended to be useful on its own. Paid features should be added only where they expand team workflows without weakening the local-first promise.