The **eslint-plugin-no-use-extend-native** is an ESLint plugin that flags any code that accesses properties or methods added to built‑in native prototypes (e.g., `String.prototype.xxx` or `Array.prototype.xxx`) by third‑party libraries. It’s meant for developers who want to avoid relying on patched native objects—ensuring their code stays safe even when those prototypes are later overridden or removed. By adding the rule to an ESLint config, teams can enforce a “no‑use‑extended‑native” coding style across their JavaScript/TypeScript projects.