Eu faria algo assim:
```ts
const list = [0, 1, 2, 3];

const sum = (list) => list.reduce((a, b) => a + b, 0);

const average = (list) => (sum(list) / list.length) || 0;

console.log(average(list)); // 1.5
```

Eu faria algo assim: const list = [0, 1, 2, 3]; const sum = (list) => list.reduce((a, b) => a + b, 0); const average = (list) => (sum(list) / list.length) || 0; console.log(average(list))...

Eu faria algo assim: const list = [0, 1, 2, 3]; const sum = (list) => list.reduc · kevynrocha

E funções simples assim, o que acham? To começa...