setup: add eslint configs, include eslint and prettier in github work…

…flow

.eslintrc.cjs

@@ -0,0 +1,35 @@
+module.exports = {
+    extends: [
+        "plugin:@typescript-eslint/recommended",
+        "plugin:astro/recommended",
+        "plugin:astro/jsx-a11y-recommended"
+    ],
+    overrides: [
+        {
+            files: ["*.astro"],
+            parser: "astro-eslint-parser",
+            parserOptions: {
+                parser: "@typescript-eslint/parser",
+                extraFileExtensions: [".astro"]
+            }
+        },
+        {
+            files: [".jsx", ".tsx"],
+            extends: ["plugin:react/recommended"],
+            plugins: ["react"],
+            rules: {
+                "react/react-in-jsx-scope": "off",
+                "react/jsx-uses-react": "off"
+            }
+        }
+    ],
+    settings: {
+        "import/resolver": {
+            typescript: {}
+        }
+    },
+    rules: {
+        "import/prefer-default-export": ["off"]
+    },
+    plugins: ["@typescript-eslint", "import"]
+};

.github/workflows/compiler.yml

@@ -1,8 +1,8 @@
 ---
-name: Compiler
+name: Lint
 
 #############################
-# Start the job on push #
+# Start the job on push     #
 #############################
 on:
     push:
@@ -16,7 +16,7 @@ on:
 jobs:
     build:
         # Name the Job
-        name: Run TypeScript compiler
+        name: Run ESLint, Prettier, and TypeScript compiler
         # Set the agent to run on
         runs-on: ubuntu-latest
 
@@ -35,12 +35,22 @@ jobs:
                   fetch-depth: 0
 
             ################################
-            # Install packages #
+            # Install packages             #
             ################################
             - name: Install packages
               run: npm ci
             ################################
-            # Check for TypeScript errors #
+            # Lint codebase                #
+            ################################
+            - name: Run ESLint
+              run: npx eslint .
+            ################################
+            # Check Prettier on codebase   #
+            ################################
+            - name: Run Prettier
+              run: npx prettier --check .
+            ################################
+            # Check for TypeScript errors  #
             ################################
             - name: Run TypeScript compiler (tsc)
               run: npx tsc --noEmit