marcoroth/herb

Health v2 · maintenance only

Adoption not part of the score

1295 stars · 134 forks observed · 2026-09-03

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Herb is an HTML-aware ERB toolchain built around a fast C parser that produces detailed syntax trees for HTML+ERB templates. It ships developer tools (CLI, language server, formatter, linter), language bindings for Ruby, Node.js, Java, Rust, and WebAssembly, and an Erubi-compatible rendering engine.

Use cases

• parse html.erb templates into a syntax tree
• lint and format ERB view files
• add ERB language server support to an editor
• replace Erubi with an HTML-aware ERB rendering engine
• analyze Rails templates for HTML validation and security checks
• highlight or minify HTML+ERB templates

When to choose

• you work with .html.erb files in Rails or other Ruby web frameworks and want modern tooling
• you need accurate, error-tolerant parsing of interleaved HTML and Ruby code
• you want editor integration (LSP), formatting, or linting for ERB templates

When to avoid

• you use templating languages other than ERB (broader support is still planned)
• you need a fully stable formatter, which is still experimental
• your project has no HTML+ERB templates

Facets

library · maturity active

parser linter formatter templating cli editor developer-tools web-development parsers developer-tools frontend ruby rust cli wasm cross-platform erb html language-server syntax-tree rails ruby-tooling lsp nodejs

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