Added mixin

tsconfig.json

@@ -1,19 +1,20 @@
-{
-	"include": [
-		"src/**/*"
-	],
-	"compilerOptions": {
-		"composite": true,
-		"declaration": true,
-		"declarationMap": true,
-		"experimentalDecorators": true,
-		"esModuleInterop": true,
-		"inlineSourceMap": true,
-		"lib": ["ESNext", "DOM"],
-		"module": "ES6",
-		"moduleResolution": "Node",
-		"outDir": "./dist",
-		"strict": true,
-		"target": "ESNext"
-	}
-}
+{
+	"include": ["src"],
+	"compilerOptions": {
+		"target": "ES2020",
+		"useDefineForClassFields": true,
+		"module": "ESNext",
+		"lib": ["ESNext", "DOM", "DOM.Iterable"],
+		"skipLibCheck": true,
+
+		/* Bundler mode */
+		"moduleResolution": "bundler",
+		"allowImportingTsExtensions": true,
+		"resolveJsonModule": true,
+		"isolatedModules": true,
+		"noEmit": true,
+
+		/* Linting */
+		"strict": true
+	}
+}