tree_haver v5.0.1 released!

🏷️ release

tree_haver 🏷️ v5.0.1

5.0.1 - 2026-01-11

TreeHaver::RSpec::TestableNode - A testable node class for creating mock TreeHaver::Node instances in tests without requiring an actual parser backend. Available via require "tree_haver/rspec/testable_node" or automatically when using require "tree_haver/rspec".
- TestableNode.create(type:, text:, ...) - Create a single test node
- TestableNode.create_list(...) - Create multiple test nodes
- MockInnerNode - The underlying mock that simulates backend-specific nodes
- Top-level TestableNode constant for convenience in specs
Fully Dynamic Tag Registration in TreeHaver::BackendRegistry:
- register_tag(tag_name, category:, backend_name:, require_path:) - Register a complete dependency tag with lazy loading support. External gems can now get full RSpec tag support without any hardcoded knowledge in tree_haver.
- tag_available?(tag_name) - Check if a tag’s dependency is available, with automatic lazy loading via the registered require_path
- registered_tags - Get all registered tag names
- tags_by_category(category) - Get tags filtered by category (:backend, :gem, :parsing, :grammar, :engine, :other)
- tag_metadata(tag_name) - Get full metadata for a registered tag
- tag_summary - Get availability status of all registered tags

Fully Dynamic Backend Availability in BackendRegistry and DependencyTags:
- register_tag now dynamically defines *_available? methods on DependencyTags at registration time
- External gems automatically get availability methods when they call register_tag
- No changes to tree_haver are needed for new external backend gems
- Built-in backends (prism, psych, citrus, parslet) retain explicit methods
- summary method dynamically includes registered backends from BackendRegistry
- backend_availability_methods and backend_tags hashes are built dynamically
RSpec exclusion filters for backend tags are configured dynamically from BackendRegistry

TreeHaver::Parser#unwrap_language bug fix for MRI and Rust backends
- :mri and :rust cases were not returning the unwrapped language value
- The code called lang.to_language / lang.inner_language / lang.name but didn’t return the result
- Now properly returns the unwrapped language for all backend types
any_markdown_backend_available? now uses BackendRegistry.tag_available? instead of calling markly_available? and commonmarker_available? directly. This fixes NoMethodError when the external markdown backend gems haven’t registered their tags yet.

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