OpenAPI Path Templating Utilities

openapi-path-templating is a JavaScript/TypeScript library providing comprehensive tools for working with OpenAPI Path Templating expressions. It acts as a parser, validator, resolver, matcher, and normalizer for URL paths defined using OpenAPI's curly brace `{}` syntax for path parameters. The current stable version is 2.2.1, with a relatively active release cadence addressing bug fixes and feature enhancements, as seen in recent updates in late 2024 and early 2025. A key differentiator is its foundational role in defining the official ABNF grammar for OpenAPI Path Templating, ensuring high fidelity with the specification across OpenAPI versions 2.0, 3.0.x, and 3.1.x. It leverages ABNF (Augmented Backus–Naur Form) based parsers for robust and specification-compliant operations.