feat: Install/setup TypeScript and @typescript-eslint

Author: Danktuary

.eslintrc.js

@@ -3,8 +3,17 @@ module.exports = {
 	env: {
 		node: true,
 	},
-	'extends': ['sora'],
+	'extends': [
+		'plugin:@typescript-eslint/recommended',
+		'sora',
+	],
+	parser: '@typescript-eslint/parser',
 	parserOptions: {
-		ecmaVersion: 2017,
+		sourceType: 'module',
+		ecmaVersion: 2020,
+	},
+	rules: {
+		'no-use-before-define': 'off',
+		'@typescript-eslint/no-use-before-define': ['error'],
 	},
 }

package.json

@@ -10,9 +10,12 @@
   "devDependencies": {
     "@commitlint/cli": "^11.0.0",
     "@commitlint/config-conventional": "^11.0.0",
+    "@typescript-eslint/eslint-plugin": "^4.15.2",
+    "@typescript-eslint/parser": "^4.15.2",
     "eslint": "^7.20.0",
     "eslint-config-sora": "^3.1.0",
     "husky": "^5.0.9",
-    "lerna": "^4.0.0"
+    "lerna": "^4.0.0",
+    "typescript": "^4.1.5"
   }
 }

tsconfig.json

@@ -0,0 +1,21 @@
+{
+	"compilerOptions": {
+		"esModuleInterop": true,
+		"importHelpers": true,
+		"jsx": "preserve",
+		"lib": ["esnext", "dom"],
+		"module": "esnext",
+		"moduleResolution": "node",
+		"skipLibCheck": true,
+		"sourceMap": true,
+		"strict": true,
+		"target": "esnext",
+	},
+	"include": [
+		"src/**/*.ts",
+		"src/**/*.tsx",
+	],
+	"exclude": [
+		"node_modules"
+	]
+}