Migrate to typescript

.eslintrc.cjs

@@ -1,7 +1,14 @@
 /** @type { import("eslint").Linter.FlatConfig } */
 module.exports = {
 	root: true,
-	extends: ['eslint:recommended', 'plugin:svelte/recommended', 'prettier'],
+	extends: [
+		'eslint:recommended',
+		'plugin:svelte/recommended',
+		'prettier',
+		'plugin:@typescript-eslint/recommended'
+	],
+	parser: '@typescript-eslint/parser',
+	plugins: ['@typescript-eslint', 'prettier'],
 	parserOptions: {
 		sourceType: 'module',
 		ecmaVersion: 2020,
@@ -11,5 +18,20 @@ module.exports = {
 		browser: true,
 		es2017: true,
 		node: true
+	},
+	globals: {
+		NodeJS: true
+	},
+	overrides: [
+		{
+			files: ['*.svelte'],
+			parser: 'svelte-eslint-parser',
+			parserOptions: {
+				parser: '@typescript-eslint/parser'
+			}
+		}
+	],
+	rules: {
+		'@typescript-eslint/no-explicit-any': 'off'
 	}
 };