打印稿solutioin:

export const toMap = (errors: ResponseError[]) => {
  const errorMap: Record<string, string> = {};
  errors.forEach(({ field, message }) => {
    errorMap[field] = message;
  });
  return errorMap;
};

export type FieldError = {
  field: string;
  message: string;
};

最短的答案:(使用解构)

const obj = { ...input }

例子:

const inputArray = ["a", "b", "c"]
const outputObj = { ...inputArray }

令I = 0; let myArray = ["first"， "second"， "third"， "fourth"]; const arrayToObject = (arr) => 对象。分配(arr{},……。Map (item => ({[i++]: item}))); console.log (arrayToObject (myArray));

或使用

myArray = ["first"， "second"， "third"， "fourth"] console.log (myArray{…})

如果有人在搜索Typescript方法，我这样写:

const arrayToObject = <T extends Record<K, any>, K extends keyof any>(
  array: T[] = [],
  getKey: (item: T) => K,
) =>
  array.reduce((obj, cur) => {
    const key = getKey(cur)
    return ({...obj, [key]: cur})
  }, {} as Record<K, T>)

它将:

强制第一个参数为对象数组 帮助选择键 强制该键为所有数组项的键

例子:

// from:
const array = [
    { sid: 123, name: 'aaa', extra: 1 },
    { sid: 456, name: 'bbb' },
    { sid: 789, name: 'ccc' }
];
// to:
{
  '123': { sid: 123, name: 'aaa' },
  '456': { sid: 456, name: 'bbb' },
  '789': { sid: 789, name: 'ccc' }
}

用法:

const obj = arrayToObject(array, item => item.sid) // ok
const obj = arrayToObject(array, item => item.extra) // error

这是一个演示。

我们可以使用Object。赋值和数组。reduce函数将数组转换为对象。 Var arr = [{a:{b:1}}，{c:{d:2}}] var newObj = arr。reduce((a, b) =>对象。赋值(a, b)， {}) console.log (newObj)

var finalResult = ['a'，'b'，'c']。Map ((item, index) => ({[index]: item})); console.log (finalResult)