如何在带有接口的 Typescript 中声明公共和私有变量？

Posted 2023-02-25

【中文标题】如何在带有接口的 Typescript 中声明公共和私有变量？

【英文标题】：How can I declare public and private variables in Typescript with interfaces?

【发布时间】：2014-09-07 19:48:56

【问题描述】：

我有以下代码：

interface IEnumElement 
    elem: string;
    text: string;
    val: number

interface IIndexable<T> 
    [index: string]: T;


class AdminBase 

    ExamStatusId: IIndexable<IEnumElement> = 
        All: 
            elem: "",
            text: 'Exam Status: All',
            val: 0
        ,
        Current: 
            elem: "asdf",
            text: 'Exam Status: Current',
            val: 1
        
    

这给了我一个错误提示：

Error   5   Public property 'ExamStatusId' of exported class has or is 
using private type 'IEnumElement'.  C:\Protractor\Latest\TypeScript1.ts

【参考方案1】：

我想问题出现了，一旦你开始导出 AdminBase 类。正如这里很好地解释的那样：

Why does Typescript use the keyword "export" to make classes and interfaces public?

我们要做的，就是导出接口

export interface IEnumElement 
    elem: string;
    text: string;
    val: number

export interface IIndexable<T> 
    [index: string]: T;


export class AdminBase 

    ExamStatusId: IIndexable<IEnumElement> = 
        All: 
            elem: "",
            text: 'Exam Status: All',
            val: 0
        ,
        Current: 
            elem: "asdf",
            text: 'Exam Status: Current',
            val: 1