Add boilerplate of hardhat-exposed

.changeset/brown-glasses-walk.md

@@ -0,0 +1,5 @@
+---
+"hardhat": patch
+---
+
+Add ArtifactManager#getAllArtifactPaths

.changeset/eight-corners-roll.md

@@ -0,0 +1,6 @@
+---
+"@nomicfoundation/hardhat-typechain": patch
+"hardhat": patch
+---
+
+Make typechain work when compiling a subset of the Solidity files

v-next/hardhat-ethers/test/helpers/artifact-manager-mock.ts

@@ -80,6 +80,15 @@ export class MockArtifactManager implements ArtifactManager {
     );
   }
 
+  public async getAllArtifactPaths(): Promise<ReadonlySet<string>> {
+    throw new HardhatError(
+      HardhatError.ERRORS.CORE.INTERNAL.NOT_IMPLEMENTED_ERROR,
+      {
+        message: "Not implemented in MockArtifactManager",
+      },
+    );
+  }
+
   public async getBuildInfoId(
     _contractNameOrFullyQualifiedName: string,
   ): Promise<string | undefined> {

v-next/hardhat-exposed-example/.gitignore

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+# Node modules
+/node_modules
+
+# Compilation output
+/dist
+
+# pnpm deploy output
+/bundle
+
+# test coverage output
+coverage
+
+# all the tmp folders in the fixture projects
+/test/fixture-projects/tmp/

v-next/hardhat-exposed-example/.prettierignore

@@ -0,0 +1,6 @@
+/node_modules
+/dist
+/coverage
+CHANGELOG.md
+/test/fixture-projects/**/artifacts
+/test/fixture-projects/**/cache

v-next/hardhat-exposed-example/LICENSE

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) 2024 Nomic Foundation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

v-next/hardhat-exposed-example/README.md

@@ -0,0 +1,84 @@
+# hardhat-exposed-example
+
+A Hardhat plugin that generates exposed contract wrappers, allowing you to test internal functions in your Solidity contracts.
+
+## What it does
+
+When testing Solidity contracts, internal functions are not directly accessible from test code. This plugin automatically generates wrapper contracts that inherit from your original contracts, exposing internal functions so they can be called in tests.
+
+For a contract like:
+
+```solidity
+contract MyContract {
+    function _internalHelper(uint256 x) internal pure returns (uint256) {
+        return x * 2;
+    }
+}
+```
+
+The plugin generates:
+
+```solidity
+import "../contracts/MyContract.sol";
+
+contract MyContractExposed is MyContract {
+  function internalHelper(uint256 x) internal pure returns (uint256) {
+      return _internalHelper(x);
+  }
+}
+```
+
+You can then deploy `MyContractExposed` in your tests and call the internal function through inheritance.
+
+## Installation
+
+```bash
+npm install hardhat-exposed-example
+```
+
+## Usage
+
+Import the plugin in your Hardhat config and add it to the `plugins` array:
+
+```typescript
+import HardhatExposedExample from "hardhat-exposed-example";
+
+export default {
+  plugins: [
+    // ... other plugins ...,
+    HardhatExposedExample,
+  ],
+};
+```
+
+The plugin hooks into the Solidity build process and automatically generates exposed contracts for all your Solidity files.
+
+## Configuration
+
+You can configure the output directory for generated contracts:
+
+```typescript
+// hardhat.config.ts
+export default {
+  paths: {
+    exposedContracts: "exposed-contracts", // default
+  },
+};
+```
+
+The path can be relative (resolved from project root) or absolute.
+
+## Clean Behavior
+
+When running `npx hardhat clean`, this plugin automatically deletes the `exposedContracts` directory along with all generated wrapper contracts.
+
+This ensures that stale exposed contracts are removed when you clean your project. The directory will be regenerated on the next build.
+
+## How it works
+
+1. During the Solidity build, the plugin detects all contract definitions
+2. For each contract (excluding npm libraries), it generates a wrapper contract
+3. The wrapper inherits from the original contract, making internal functions accessible (TODO: the current generation is super basic)
+4. Generated files are placed in the configured `exposedContracts` directory
+5. The exposed contracts are compiled separately from your main contracts, but during the same build process
+6. All the cache system and ts bindings generations still works for the exposed contracts.

v-next/hardhat-exposed-example/eslint.config.js

@@ -0,0 +1,3 @@
+import { createConfig } from "../config/eslint.config.js";
+
+export default createConfig(import.meta.filename);

v-next/hardhat-exposed-example/package.json

@@ -0,0 +1,60 @@
+{
+  "name": "hardhat-exposed-example",
+  "private": true,
+  "version": "3.0.0",
+  "description": "hardhat-exposed-example",
+  "homepage": "https://github.com/nomicfoundation/hardhat/tree/v-next/v-next/hardhat-exposed-example",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/NomicFoundation/hardhat",
+    "directory": "v-next/hardhat-exposed-example"
+  },
+  "author": "Nomic Foundation",
+  "license": "MIT",
+  "type": "module",
+  "types": "dist/src/index.d.ts",
+  "exports": {
+    ".": "./dist/src/index.js"
+  },
+  "keywords": [
+    "ethereum",
+    "smart-contracts",
+    "hardhat"
+  ],
+  "scripts": {
+    "lint": "pnpm prettier --check && pnpm eslint",
+    "lint:fix": "pnpm prettier --write && pnpm eslint --fix",
+    "eslint": "eslint \"src/**/*.ts\" \"test/**/*.ts\"",
+    "prettier": "prettier \"**/*.{ts,js,md,json}\"",
+    "test": "node --import tsx/esm --test --test-reporter=@nomicfoundation/hardhat-node-test-reporter \"test/*.ts\" \"test/!(fixture-projects|helpers)/**/*.ts\"",
+    "test:only": "node --import tsx/esm --test --test-only --test-reporter=@nomicfoundation/hardhat-node-test-reporter \"test/*.ts\" \"test/!(fixture-projects|helpers)/**/*.ts\"",
+    "test:coverage": "c8 --reporter html --reporter text --all --exclude test --exclude \"src/**/{types,type-extensions}.ts\" --src src node --import tsx/esm --test --test-reporter=@nomicfoundation/hardhat-node-test-reporter \"test/*.ts\" \"test/!(fixture-projects|helpers)/**/*.ts\"",
+    "pretest": "pnpm build",
+    "pretest:only": "pnpm build",
+    "build": "tsc --build .",
+    "prepublishOnly": "pnpm build",
+    "clean": "rimraf dist"
+  },
+  "files": [
+    "dist/src/",
+    "src/",
+    "CHANGELOG.md",
+    "LICENSE",
+    "README.md"
+  ],
+  "devDependencies": {
+    "@nomicfoundation/hardhat-node-test-reporter": "workspace:^3.0.2",
+    "@types/node": "^22.0.0",
+    "c8": "^9.1.0",
+    "eslint": "9.25.1",
+    "expect-type": "^1.2.1",
+    "hardhat": "workspace:^3.1.5",
+    "prettier": "3.2.5",
+    "rimraf": "^5.0.5",
+    "tsx": "^4.19.3",
+    "typescript": "~5.8.0"
+  },
+  "peerDependencies": {
+    "hardhat": "workspace:^3.1.5"
+  }
+}