HAST to NLCST Transformer

hast-util-to-nlcst is a utility package within the unified/syntax-tree ecosystem designed to transform a HAST (HTML Abstract Syntax Tree) into an NLCST (Natural Language Concrete Syntax Tree). This transformation extracts the natural language content from an HTML structure, making it suitable for natural language processing tasks such as linting, sentiment analysis, or spell checking with tools like retext. The package is currently stable at version 4.0.0 and follows a semver release cadence, with major versions often introducing breaking changes related to environment support (e.g., Node.js versions, ESM-only) or parser API updates. A key differentiator is its focused role in bridging HTML content to natural language processing within the unist AST family, though it currently lacks a mechanism to apply changes back from NLCST to HAST. It is often used in conjunction with parsers like `parse-english` and wrappers like `rehype-retext`.