ESTree Utility to Visit Nodes

estree-util-visit is a core utility within the unified (syntax-tree) ecosystem designed for traversing ESTree (and esast) abstract syntax trees. It enables developers to visit nodes in a depth-first traversal (preorder and/or postorder) for analysis or transformation. The current stable version is 2.0.0. The package distinguishes itself by duck-typing fields for node identification, eliminating the need for a predefined dictionary of node fields, which can simplify usage compared to other walkers. It provides symbolic controls (CONTINUE, EXIT, SKIP) for fine-grained traversal management. Releases are generally tied to ecosystem-wide updates or targeted feature enhancements. Since v2, it is an ESM-only package and requires Node.js 16 or newer.