hermes-estree

hermes-estree provides Flow type definitions for the ESTree-compatible Abstract Syntax Tree (AST) generated by the `hermes-parser` package. The `hermes-parser` itself is a JavaScript parser derived from the Hermes engine, which is primarily optimized for React Native applications. This package is essential for developers building robust tooling, such as linters, code formatters, or advanced code transformers, on top of the Hermes parser's output. It enables type safety when working with the AST within TypeScript or Flow codebases. Currently at version 0.35.0, the package generally maintains a regular release cadence, often aligning with updates to the Hermes engine and its parser components. Its key differentiator is its direct integration with the Hermes ecosystem, ensuring accurate type representations for ASTs produced specifically by the Hermes parser, making it a foundational component for projects leveraging Hermes for source code analysis and manipulation.