chore: add additional eslint rules, exclude non-src from linting

Author: ThatNerdSquared

eslint.config.mjs

@@ -21,17 +21,23 @@ export default defineConfig([
   ...eslintPluginAstro.configs["jsx-a11y-strict"],
   {
     rules: {
+      "@typescript-eslint/explicit-function-return-type": "warn",
+      "consistent-return": "error",
       "default-case-last": "error",
       eqeqeq: "error",
       "no-await-in-loop": "warn",
+      "no-console": "error",
       "no-duplicate-imports": "error",
+      "no-empty-function": "error",
       "no-implicit-coercion": "error",
       "no-label-var": "error",
       "no-self-compare": "error",
       "no-template-curly-in-string": "error",
       "no-unmodified-loop-condition": "error",
       "no-unreachable-loop": "error",
       "no-useless-assignment": "error",
+      "prefer-arrow-callback": "warn",
+      "prefer-const": "warn",
       "prefer-promise-reject-errors": "error",
       yoda: "warn",
     },

package.json

@@ -8,7 +8,7 @@
     "preview": "astro preview",
     "astro": "astro",
     "check": "npx astro check",
-    "lint": "npx eslint; npx stylelint \"src/**/*.{css,html,astro}\"",
+    "lint": "npx eslint \"src/**/*.{css,html,astro}\"; npx stylelint \"src/**/*.{css,html,astro}\"",
     "lint-fix": "npm run lint -- --fix",
     "fmt": "npx prettier --check src",
     "fmt-fix": "npx prettier --write src",