feat: example ISM

.github/workflows/test.yml

@@ -26,27 +26,16 @@ jobs:
         with:
           version: nightly
 
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v3.0.0
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
         with:
-          version: 9
-          run_install: false
+          node-version: 18
 
-      - name: Get pnpm store directory
-        shell: bash
-        run: |
-          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
-
-      - name: Setup pnpm cache
-        uses: actions/cache@v3
-        with:
-          path: ${{ env.STORE_PATH }}
-          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
-          restore-keys: |
-            ${{ runner.os }}-pnpm-store-
+      - name: Install Yarn
+        run: npm install -g yarn
 
       - name: Install dependencies
-        run: pnpm i --frozen-lockfile
+        run: yarn install
 
       - name: Run Forge build
         run: |

.gitignore

@@ -5,7 +5,6 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
-.pnpm-debug.log*
 
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

.prettierignore

@@ -14,5 +14,4 @@ cache_forge
 *.log
 .DS_Store
 .pnp.*
-lcov.info
-pnpm-lock.yaml
+lcov.info

package.json

@@ -1,11 +1,13 @@
 {
-  "name": "@ethsign/",
+  "name": "@hyperlane-xyz/community",
   "version": "1.0.0",
-  "description": "",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/EthSign"
-  },
+  "description": "A repository for community-contributions to Hyperlane protocol.",
+  "repository": "https://github.com/hyperlane-xyz/community-isms",
+  "license": "Apache-2.0",
+  "keywords": [
+    "Hyperlane",
+    "Solidity"
+  ],
   "scripts": {
     "prepare": "husky",
     "clean": "forge clean && hardhat clean && rm -rf cache_hardhat",
@@ -18,9 +20,8 @@
     "test:coverage": "forge coverage",
     "test:gas": "forge test --gas-report"
   },
-  "author": "",
-  "license": "ISC",
   "dependencies": {
+    "@hyperlane-xyz/core": "^5.8.0",
     "@openzeppelin/contracts": "5.0.2",
     "@openzeppelin/contracts-upgradeable": "5.0.2"
   },

remappings.txt

@@ -1,4 +1,5 @@
 @openzeppelin/contracts/=node_modules/@openzeppelin/contracts/
 @openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/
+@hyperlane-xyz/=node_modules/@hyperlane-xyz/core/
 ds-test/=node_modules/ds-test/src
 forge-std/=node_modules/forge-std/src

src/ExampleIsm.sol

@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+pragma solidity >=0.8.0;
+
+import { IInterchainSecurityModule } from "@hyperlane-xyz/contracts/interfaces/IInterchainSecurityModule.sol";
+
+contract ExampleIsm is IInterchainSecurityModule {
+    // @dev The first 128 enum values are reserved for core Hyperlane types
+    uint8 public constant COMMUNITY_MASK = 0x80;
+
+    // TODO: Replace with actual community types you want to use
+    enum CommunityTypes {
+        EXAMPLE_ISM
+    }
+
+    // @inheritdoc IInterchainSecurityModule
+    uint8 public moduleType = uint8(CommunityTypes.EXAMPLE_ISM) | COMMUNITY_MASK;
+
+    // @inheritdoc IInterchainSecurityModule
+    function verify(bytes calldata, bytes calldata) public view returns (bool) {
+        // TODO: Implement the verification logic for incoming messages and return true if the message is valid
+        // check AbstractMultisigIsm.sol for a reference implementation
+        return true;
+    }
+}

test/ExampleIsm.t.sol

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: MIT or Apache-2.0
+pragma solidity ^0.8.13;
+
+import { Test } from "forge-std/Test.sol";
+import { ExampleIsm } from "../src/ExampleIsm.sol";
+
+contract ExampleIsmTest is Test {
+    ExampleIsm public exampleIsm;
+    uint8 public constant EXAMPLE_ISM_TYPE = 128;
+
+    function setUp() public {
+        exampleIsm = new ExampleIsm();
+    }
+
+    function test_moduleType() public view {
+        assertEq(exampleIsm.moduleType(), EXAMPLE_ISM_TYPE);
+    }
+
+    // TODO: Implement the test for the verify function
+    function test_verify() public view {
+        assertTrue(exampleIsm.verify(abi.encode(""), abi.encode("")));
+    }
+}