Map Or Similar

Map Or Similar is a JavaScript utility that provides a `Map`-like object, defaulting to the native `Map` if available in the environment, or falling back to a custom polyfill implementation otherwise. Currently at version 1.5.0, it focuses on delivering a high-performance, dependency-free solution for environments where native `Map` support might be lacking or incomplete. The library supports core `Map` methods such as `set`, `get`, `has`, `delete`, `forEach`, and the `size` property, making it suitable for basic key-value storage. It is designed to work seamlessly in both browser and Node.js environments. Its primary differentiator is its lightweight footprint and performance-oriented implementation, achieved by only replicating a subset of the full `Map` API, rather than attempting a complete polyfill.