hardhat/src/internal/builtin-plugins/artifacts/type-extensions.ts

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

import type { ArtifactManager } from "../../../types/artifacts.js";

declare module "../../../types/hre.js" {
  interface HardhatRuntimeEnvironment {
    artifacts: ArtifactManager;
  }
}