Add eslint

- Copy eslint configs from TransPlace's moderation bot
- Modify some settings to better fit this project

.eslintrc.json

@@ -0,0 +1,48 @@
+{
+    "env": {
+        "browser": false,
+        "es2021": true
+    },
+    "ignorePatterns": ["dist/"],
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+        "indent": [
+            "error",
+            4
+        ],
+        "linebreak-style": [
+            "error",
+            "unix"
+        ],
+        "quotes": [
+            "error",
+            "double"
+        ],
+        "semi": [
+            "error",
+            "always"
+        ],
+        "no-unused-vars": "off",
+        "@typescript-eslint/no-unused-vars": [
+            "warn",
+            {
+                "argsIgnorePattern": "^_",
+                "varsIgnorePattern": "^_",
+                "caughtErrorsIgnorePattern": "^_"
+            }
+        ],
+        "no-trailing-spaces": "error",
+        "@typescript-eslint/no-explicit-any": "error"
+    }
+}

package.json

@@ -5,6 +5,7 @@
     "agenda": "^4.3.0",
     "body-parser": "^1.20.0",
     "discord.js": "13.8.1",
+    "eslint": "^8.21.0",
     "express": "^4.18.1",
     "fuse.js": "^6.6.2",
     "humanize-duration": "^3.27.1",
@@ -24,7 +25,8 @@
   "scripts": {
     "build": "tsc",
     "start": "node --experimental-json-modules dist/index.js",
-    "dev": "rm -rf dist && tsc && node --experimental-json-modules dist/index.js"
+    "dev": "rm -rf dist && tsc && node --experimental-json-modules dist/index.js",
+    "lint": "eslint ."
   },
   "repository": {
     "type": "git",
@@ -41,5 +43,10 @@
   },
   "homepage": "https://github.com/ClicksMinutePer/Nucleus#readme",
   "private": false,
-  "type": "module"
+  "type": "module",
+  "devDependencies": {
+    "@tsconfig/node16-strictest-esm": "^1.0.3",
+    "@typescript-eslint/eslint-plugin": "^5.32.0",
+    "@typescript-eslint/parser": "^5.32.0"
+  }
 }

tsconfig.json

@@ -1,4 +1,5 @@
 {
+    "extends": "@tsconfig/node16-strictest-esm/tsconfig.json",
     "compilerOptions": {
         "module": "esnext",
         "target": "es2020",
@@ -13,4 +14,4 @@
     },
     "include": ["src/**/*", "installer.js"],
     "exclude": []
-}
+}