High-performance JavaScript micro framework.

Warning: This is alpha software. Test thoroughly before using in production. Please report any bugs you find!

Originally a fork of the excellent https://github.com/Freak613/stage0 project.

• Add documentation about:
  • Internal use of innerHTML — potencial risk of XSS etc.; never use h and html functions with untrusted input
    • In future we may have Sanitizer.sanitizeFor(...) which could be used to sanitize untrusted input
      • It's unlikely we'll use it internally due to performance overhead but developers should definately sanitize input when untrusted before passing it in... although we could create light wrapper functions
      • https://developer.mozilla.org/en-US/docs/Web/API/Sanitizer/sanitizeFor
      • https://developer.mozilla.org/en-US/docs/Web/API/HTML_Sanitizer_API
  • New DOM utility functions
    • createFragment
    • create
    • append
    • prepend
    • onNodeRemove
  • New reactive store feature
  • Differences from the original stage0 project:
    • h is now function h(template: string): S1Node e.g., h('<p>#text<p>')
    • html is available to use as a string template literal tag function e.g., html`<p>#text<p>`
    • Import paths
      • Other than reconcilers, everything is a named export from stage1
      • Reconcilers all export a reconcile function
      • /keyed --> /reconcile/keyed
      • /reconcile --> /reconcile/non-keyed
      • /reuse-nodes --> /reconcile/reuse-nodes
    • Extra DOM utils
    • New reactive store factory can be imported from stage1/store
    • Improved TypeScript support
    • Reduced size and improved load and runtime performance
  • process.env.NODE_ENV must be defined
  • If process.env.NODE_ENV === 'production you must minify h/html strings with a compatible minifier
    • Add full example with esbuild + esbuild-minify-templates
  • Ref names must be lowercase because some browsers normalise element attribute names when rendering HTML
• Add API and usage documentation
• Add more tests
• Add examples
• Set up benchmarking + compare to stage0 and other JS frameworks
• Submit to https://github.com/krausest/js-framework-benchmark

Note: Internet Explorer is not supported.

Minimum browser version required:

• Chrome 26
• Edge 13
• Firefox 22
• Safari 8
• Opera 15

Some optional features require a higher browser version:

• Compiler html tagged template literal function uses String.raw; requirements
• createFragment utility function uses DocumentFragment; requirements
• onNodeRemove utility function uses for...of; requirements
• store uses Proxy; requirements
  • Also uses logical nullish assignment and optional chaining operator, however, build tools can transform these for old browser targets

SSR via Node.js or Deno is not supported and is not the intended use of this library.

Please report any bugs you encounter on the GitHub issue tracker.

See releases on GitHub.

MIT license. See LICENSE.

© 2023 Max Milton