如何在Typescript中使用接口声明公共和私有变量？

Question

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
        }
    }
}

它给我一个错误说：

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

Answer 1

我猜一旦你开始导出AdminBase类，就会出现问题。正如在这里很好地解释：

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

我们要做的是导出接口

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
        }
    }
}