如何从typescript中的对象键字符串中提取精确的并集类型?

要获取一个类型,该类型是您需要使用的变量的联合键 keyof typeof variableName .

const MY_OBJECT = {
    'key': 'key val',
    'anotherKey': 'anotherKey val',
};
type MY_OBJECT_KEYS = keyof typeof MY_OBJECT // "key" | "anotherKey"

const MY_OBJECT = {
  key: 'key val',
  anotherKey: 'anotherKey val',
};
console.log(keyof MY_OBJECT); // "key" | "anotherKey"