typescript 错误 : A private property is missing?

Question

我有一个带有私有(private)属性的类，但是当我尝试用这些元素创建一个数组时，出现以下错误:

error TS2322: Type '{ "id": number; "totalTime": number; "team": { "id": number; "name": string; }; }[]' is not assignable to type 'Training[]'.
[0]   Type '{ "id": number; "totalTime": number; "team": { "id": number; "name": string; }; }' is not assignable to type 'Training'.
[0]     Property 'remainingTime' is missing in type '{ "id": number; "totalTime": number; "team": { "id": number; "name": string; }; }'

数组类:

import { TEAMS } from './mock-teams';
import { Training } from './training';

export var TRAININGS: Training[] = [ 
    {"id": 0, "totalTime": 60, "team": {"id": TEAMS[0]['id'], "name": TEAMS[0]['name'] } },
    {"id": 1, "totalTime": 60, "team": {"id": TEAMS[0]['id'], "name": TEAMS[0]['name'] } }
];

培训类:

export class Training {
    private remainingTime: number = 0;

    constructor(
        public id: number,
        public totalTime: number,
        public team?: Team) {
    }   
}

我不明白为什么 typescript 会提示一个甚至不在构造函数中的私有(private)属性。

Answer 1

按照您的方式，您正在创建类型为 Object[] 的数组。您需要做的是像下面这样调用构造函数来告诉编译器您正在创建一个Training对象:

import { TEAMS } from './mock-teams';
import { Training } from './training';

export var TRAININGS: Training[] = [ 
    new Training(0,60, {"id": TEAMS[0]['id'], "name": TEAMS[0]['name'] }),
    new Training(1,60, {"id": TEAMS[0]['id'], "name": TEAMS[0]['name'] })
];