linting and eslint setup

Author: whatsaaaa

.eslintrc

@@ -0,0 +1,21 @@
+{
+  "env": {
+    "es2021": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:@typescript-eslint/recommended-requiring-type-checking"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 12
+  },
+  "plugins": ["@typescript-eslint"],
+  "rules": {
+    "prefer-const": "error",
+    "@typescript-eslint/no-unsafe-member-access": "off",
+    "@typescript-eslint/no-unsafe-call": "off",
+    "@typescript-eslint/no-unsafe-assignment": "off"
+  }
+}

package.json

@@ -14,6 +14,9 @@
     "yarn": "1.22.10"
   },
   "devDependencies": {
+    "@typescript-eslint/eslint-plugin": "^4.14.0",
+    "@typescript-eslint/parser": "^4.14.0",
+    "eslint": "^7.18.0",
     "rimraf": "^3.0.2"
   }
 }

packages/types/.eslintrc

@@ -0,0 +1,6 @@
+{
+  "extends": "../../.eslintrc",
+  "parserOptions": {
+    "project": "tsconfig.json"
+  }
+}

packages/types/package.json

@@ -10,6 +10,7 @@
   "scripts": {
     "clean": "rimraf dist *.tsbuildinfo",
     "test": "jest",
+    "lint": "eslint src --ext js,ts",
     "build": "tsc -b ."
   },
   "devDependencies": {

packages/utils/.eslintrc

@@ -0,0 +1,6 @@
+{
+  "extends": "../../.eslintrc",
+  "parserOptions": {
+    "project": "tsconfig.json"
+  }
+}

packages/utils/package.json

@@ -9,6 +9,7 @@
   "scripts": {
     "clean": "rimraf dist *.tsbuildinfo",
     "test": "jest",
+    "lint": "eslint src --ext js,ts",
     "build": "tsc -b ."
   },
   "dependencies": {