我有一个函数，它接受一个字符串数组，并返回一个以数组中的每个元素为键的Map。我希望返回的类型能反映这一点。
这就是我现在的状态（Playground）：

function register<T extends string>(name: string, events: readonly T[]): { [S in T]: string } {
  const r = events.reduce((p, el) => {
    p[el] = `${name}:${el}`;
    return p;
  }, {} as { [S in T]: string });
  return r;
}

const colors = ["blue", "green", "red", "yellow"] as const;
const x = register<typeof colors[number]>('foo', colors)
console.log(x.blue, x)

有没有办法一步到位呢？

const x = register<...?...>('foo', ["blue", "green", "red", "yellow"])