Espree is a high-performance, spec-compliant ECMAScript parser used by ESLint. It understands the latest JavaScript syntax, including ES2024 features and experimental proposals. Designed for AST (Abstract Syntax Tree) analysis, Espree is highly customizable, allowing plugins to extend its parsing capabilities and support custom language extensions. It offers detailed error reporting and location information, making debugging easier for developers. Espree is a crucial tool for static analysis, code transformation, and other JavaScript tooling.
Espree's release frequency shows high activity in early years (2014-2016), with multiple releases per month. The pace slowed significantly after 2017, with sporadic releases, often one per month, and many months with no releases. Releases continue through 2025 with version 10.4.0 being the last one in June, indicating ongoing, but infrequent, maintenance.
Espree npm package downloads show growth from March 2024 (150M) to August 2025 (261M), peaking at 308M in July 2025. September 2025 is incomplete yet with 32M downloads. Overall, there's a significant upward trend in espree downloads across the given months.
