Undeclared Identifiers Finder

This package, `undeclared-identifiers`, provides a utility to identify undeclared identifiers and property accesses within JavaScript source code or an existing Abstract Syntax Tree (AST). It primarily targets older JavaScript environments, as indicated by its last significant update (v1.1.3 in 2018) and its internal reliance on `acorn-node` for parsing. It returns an object containing arrays of identified undeclared variable names and their associated property accesses. It does not perform full scope resolution, but rather flags any identifier not explicitly declared within its immediate context, making it suitable for basic linting, dependency analysis, or static code checks in environments where modern tooling might be overkill or incompatible. The package has seen infrequent updates since its initial releases, suggesting it is in a maintenance mode, with no new feature development expected.