hardhat/src/internal/util/platform.ts

Hardhat is an extensible developer tool that helps smart contract developers increase productivity by reliably bringing together the tools they want.

export function getRequireCachedFiles(): string[] {
  return Object.keys(require.cache).filter(
    (p) => !p.startsWith("internal") && (p.endsWith(".js") || p.endsWith(".ts"))
  );
}