Add linter

.eslintrc.json

@@ -0,0 +1,20 @@
+{
+  "env": {
+    "browser": true,
+    "es2022": true,
+    "node": true,
+    "mocha": true
+  },
+  "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended", "prettier"],
+  "overrides": [],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module"
+  },
+  "plugins": ["@typescript-eslint"],
+  "rules": {
+    "comma-dangle": [2, "always-multiline"],
+    "quotes": [2, "single", { "avoidEscape": true }]
+  }
+}

.prettierrc

@@ -0,0 +1,14 @@
+{
+  "printWidth": 120,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "arrowParens": "avoid",
+  "overrides": [
+    {
+      "files": "*.sol",
+      "options": {
+        "singleQuote": false
+      }
+    }
+  ]
+}

contracts/USDM.sol

@@ -26,7 +26,7 @@ contract USDM is
     uint256 private constant BASE = 1e18;
     uint256 public rewardMultiplier;
 
-    mapping (address => uint256) private _shares;
+    mapping(address => uint256) private _shares;
     mapping(address => bool) private _blocklist;
     mapping(address => mapping(address => uint256)) private _allowances;
     mapping(address => CountersUpgradeable.Counter) private _nonces;
@@ -260,7 +260,6 @@ contract USDM is
         require(!paused(), "Transfers not allowed while paused");
     }
 
-
     /**
      * @dev Hook that is called after any transfer of tokens. This includes
      * minting and burning.
@@ -435,11 +434,7 @@ contract USDM is
      * - `owner` cannot be the zero address.
      * - `spender` cannot be the zero address.
      */
-    function _approve(
-        address owner,
-        address spender,
-        uint256 amount
-    ) private {
+    function _approve(address owner, address spender, uint256 amount) private {
         require(owner != address(0), "ERC20: approve from the zero address");
         require(spender != address(0), "ERC20: approve to the zero address");
 

hardhat.config.ts

@@ -1,9 +1,8 @@
-import { HardhatUserConfig } from "hardhat/config";
-import "@nomicfoundation/hardhat-toolbox";
-import "@nomiclabs/hardhat-solhint";
-import "@nomicfoundation/hardhat-chai-matchers";
-import "@openzeppelin/hardhat-upgrades";
-import dotenv from "dotenv";
+import { HardhatUserConfig } from 'hardhat/config';
+import '@nomicfoundation/hardhat-toolbox';
+import '@nomicfoundation/hardhat-chai-matchers';
+import '@openzeppelin/hardhat-upgrades';
+import dotenv from 'dotenv';
 
 dotenv.config();
 
@@ -40,11 +39,11 @@ const etherscanConfig = {
 
 const config: HardhatUserConfig = {
   solidity: {
-    version: "0.8.18",
+    version: '0.8.18',
     settings: {
       optimizer: {
         enabled: true,
-        runs: 200
+        runs: 200,
       },
     },
   },
@@ -62,13 +61,18 @@ const config: HardhatUserConfig = {
     // ...(MAINNET_PRIVATE_KEY ? { accounts: [MAINNET_PRIVATE_KEY] } : {}),
     // },
     hardhat: {
-      chainId: 1337 // We set 1337 to make interacting with MetaMask simpler
-    }
+      chainId: 1337, // We set 1337 to make interacting with MetaMask simpler
+    },
   },
   gasReporter: gasReport ? gasReporterConfig : {},
+  mocha: {
+    timeout: 120000,
+  },
 };
 
-export default isTestEnv ? {
-  ...config,
-  ...testConfig
-} : config;
+export default isTestEnv
+  ? {
+      ...config,
+      ...testConfig,
+    }
+  : config;