Add eslint

.eslintrc

@@ -0,0 +1,100 @@
+{
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint"],
+  "parserOptions": {
+    "ecmaVersion": 9,
+    "ecmaFeatures": {
+      "jsx": false
+    }
+  },
+  "env": {
+    "node": true,
+    "es6": true,
+    "jasmine": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended"
+  ],
+  "rules": {
+    "camelcase": 0, // Rule is bugged atm
+    "consistent-return": 2,
+    "curly": 1,
+    "default-case": 2,
+    "guard-for-in": 2,
+    "no-alert": 2,
+    "no-caller": 2,
+    "no-cond-assign": 2,
+    "no-constant-condition": 0,
+    "no-debugger": 2,
+    "no-dupe-args": 2,
+    "no-dupe-keys": 2,
+    "no-duplicate-case": 2,
+    "no-else-return": 2,
+    "no-empty": 2,
+    "no-empty-character-class": 2,
+    "no-eq-null": 2,
+    "no-ex-assign": 2,
+    "no-extend-native": 2,
+    "no-extra-boolean-cast": 2,
+    "no-extra-semi": 1,
+    "no-fallthrough": 2,
+    "no-func-assign": 2,
+    "no-invalid-regexp": 2,
+    "no-invalid-this": 2,
+    "no-irregular-whitespace": 1,
+    "no-lone-blocks": 2,
+    "no-loop-func": 2,
+    "no-multi-spaces": 1,
+    "no-new-wrappers": 2,
+    "no-new": 2,
+    "no-octal": 2,
+    "no-negated-in-lhs": 2,
+    "no-obj-calls": 2,
+    "no-redeclare": 2,
+    "no-regex-spaces": 2,
+    "no-return-assign": 2,
+    "no-self-compare": 2,
+    "no-shadow": "off",
+    "no-unreachable": 2,
+    "no-unexpected-multiline": 2,
+    "no-unused-expressions": 2,
+    "no-use-before-define": [1, "nofunc"],
+    "no-useless-escape": 0,
+    "no-var": 2,
+    "use-isnan": 2,
+    "valid-typeof": 2,
+    "array-bracket-spacing": [1, "never"],
+    "max-len": [1, 120],
+    "brace-style": [1, "stroustrup", { "allowSingleLine": true }],
+    "comma-spacing": [1, {"before": false, "after": true}],
+    "comma-style": [1, "last"],
+    "computed-property-spacing": [1, "never"],
+    "consistent-this": [1, "self"],
+    "eol-last": 1,
+    "new-cap": 0,
+    "new-parens": 1,
+    "no-mixed-spaces-and-tabs": 1,
+    "no-nested-ternary": 1,
+    "no-spaced-func": 1,
+    "no-trailing-spaces": 1,
+    "keyword-spacing": [1, {"before": true, "after": true}],
+    "space-before-blocks": [1, "always"],
+    "@typescript-eslint/ban-ts-ignore": 0,
+    "@typescript-eslint/explicit-function-return-type": 0,
+    "@typescript-eslint/explicit-module-boundary-types": 0,
+    "@typescript-eslint/no-shadow": ["error"],
+    "@typescript-eslint/no-unused-vars": ["warn", {"args": "none" }],
+    "no-unused-vars": 0, // covered by @typescript-eslint/no-unused-vars
+    "strict": ["error", "never" ],
+    "eqeqeq": 2,
+    "prefer-const": 2,
+    "indent": ["error", 2, {
+      "FunctionDeclaration": {"parameters": "first"},
+      "FunctionExpression": {"parameters": "first"},
+      "SwitchCase": 1}
+    ]
+  },
+  "overrides": [
+  ]
+}

package.json

@@ -7,6 +7,7 @@
   "scripts": {
     "start": "node dist/index.js",
     "build": "npx tsc",
+    "lint": "eslint -c .eslintrc --max-warnings 0 'src/**/*.ts'",
     "watch": "npx tsc --watch",
     "test": "npx mocha -r ts-node/register test/**/*.test.ts",
     "dev:tsc": "tsc --watch -p .",
@@ -21,6 +22,9 @@
     "@types/hapi__vision": "^5.5.3",
     "@types/node": "^16.10.3",
     "@types/pug": "^2.0.5",
+    "@typescript-eslint/eslint-plugin": "^4.33.0",
+    "@typescript-eslint/parser": "^4.33.0",
+    "eslint": "^7.32.0",
     "nodemon": "^2.0.13",
     "npm-run-all": "^4.1.5",
     "typescript": "^4.4.3"