🛠️ Dánwò – Open-source E2E testing with emulators and fault injection

Summary
Danwo is an open-source end-to-end testing framework for web and mobile apps written in TypeScript. It uses local service emulators, invariant checks, and automated fault injection to verify backend side effects and failure handling.

Why it’s interesting
It combines UI testing with backend invariant verification and automated fault injection matrix testing, alongside an MCP server for coding agents.

Target user
Developers building web and mobile applications

Business model
Open-source under the Apache-2.0 license

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