v1.8.1

[1.8.1] - 2026-05-13

Added

• E2E fixture coverage for: language alias resolution (shell→bash) via has_language / get_language / get_parser (3 fixtures); download edge cases — empty list, multiple-language, and unknown-language error path (3 fixtures); error-handling for 120KB sources and get_language("") (2 fixtures); and TypeScript function parsing (1 fixture). Brings fixture count from 403 to 412, covering 100% of the public download, get_*, and has_language surface across all 10 language bindings.

Fixed

• Node: getLanguage(name) now returns a real tree-sitter Language that new Parser().setLanguage(lang) accepts at runtime. The previous capsule shim used napi::bindgen_prelude::External::new (rejected by node-tree-sitter's UnwrapLanguage), wrote the External to __parser, and did not type-tag the value. Adopts alef v0.15.49 where the napi capsule codegen emits raw napi_create_external + napi_type_tag_object and reads property_name/type_tag from [crates.node.capsule_types].

• Python: PackConfig and ProcessConfig type hints now resolve to the .options dataclasses, fixing mypy --strict errors at every init(...) / process(...) call site (adopts alef #72).

• Python: restore SupportedLanguage as Literal[...] of all 306 grammars at tree_sitter_language_pack.SupportedLanguage. The symbol was dropped during the alef 0.15.x codegen migration and re-importing it raised ImportError in 1.8.0 (#121).

• Python: get_parser("python").parse(b"...") returns a real tree_sitter.Tree again instead of raising AttributeError. get_parser / get_language now return native tree_sitter.Parser / tree_sitter.Language instances via PyO3 capsule pass-through (alef v0.15.39 wires capsule_types through gen_bindings) (#121).

Changed

• CI pinned to Node 22 LTS across all workflows. tree-sitter@0.25.0 (the tree-sitter npm package) ships a binding.cc written against pre-C++20 stdlib (no std::ranges, concept, requires) and fails to compile against Node 24/26's V8 headers. Node 22 is the latest supported runtime until upstream node-tree-sitter updates its cflags_cc or ships prebuilds.
• CPD pre-commit hook and packages/java/pom.xml maven-pmd-plugin minimum-tokens bumped from 100 → 250: alef's java codegen emits ~200-token try/catch cleanup blocks on DownloadManager / LanguageRegistry. Refactoring the codegen to share a helper is tracked separately.