Espree

Espree: Open-Source JavaScript Parser & Interpreter Library

A Node.js and browser-based library parsing JavaScript code into an abstract syntax tree (AST) for analysis and manipulation, supporting ECMAScript 2022+

What is Espree?

Espree is an open-source JavaScript parser and interpreter library that can be used in Node.js and browser environments. It takes JavaScript code as input and produces an abstract syntax tree (AST) as output, which represents the structure and content of the code.

Some key features of Espree include:

• Supports the latest ECMAScript standards including ES2022 and beyond
• Full support for JSX syntax for React development
• Options for strict mode, global return, and more
• Built on top of Acorn parser for speed and robustness
• Small size with no dependencies, easy to integrate
• Used by popular tools like ESLint for linting and analysis

Espree enables building tools that process, analyze, transform, compile, or otherwise operate on JavaScript code. For example, it can be used to build linters, optimizers, syntax highlighters, auto-formatters, obfuscators, transpilers to convert between JavaScript versions, and more. Overall, Espree provides a reliable foundation for any kind of JavaScript tooling based on the AST representation.

Espree Features

Official Links