carlrip · December 17, 2019 18:17
diff --git a/index.ts b/index.ts
 type Person = {
  readonly name: string;
  readonly scores: readonly number[];
 }
 const bob: Person = {
  name: "Bob",
  scores: [50, 45]
 }
 bob.scores.push(60);  // 💥 - Type error - Property 'push' does not exist on type 'readonly number[]'
	type Person = {
	readonly name: string;
	readonly scores: readonly number[];
	}
	const bob: Person = {
	name: "Bob",
	scores: [50, 45]
	}
	bob.scores.push(60); // 💥 - Type error - Property 'push' does not exist on type 'readonly number[]'