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| :warning: This project is currently under construction and missing crucial functionality | | - |

A minimalistic reactive web frontend framework written in TypeScript.

Features

• Fine-grained reactive DOM updates via promises, observables and signals using a framework-independent signal implementation.
• Based on standard JSX using the automatic runtime (aka react-jsx mode), so no special transpiler plugin needed.
• Supports dependency injection via a framework-independent cdi implementation.
• Provides built-in components for flow control, like If, Choose and Route.
• It's just a library without any build system requirements. Use whatever you like.
• Easily testable with any JSX-capable testing framework (like Vitest).

Some features are intentionally missing to keep Harmless small and focused:

• No server rendering. Harmless is a client-only library.
• No web component support. Should be easy enough to use Harmless inside a web component, though.
• No CLI tools. Harmless is just a library and doesn't dictate how to structure your project or how to work with it.
• No CommonJS support. It's time to leave the stone age behind and use ESM everywhere.

TODO

• Write built-in components like For to iterate over collections of data.
• Write documentation

More

Check out the documentation.