const.ts:

export enum ApplicationTpe {
    SelfApplication,
    Accounts,
    ThirdApplication
}

在使用时：ApplicationTpe里面定义的变量的值默认是从0开始，依次累加

import {ApplicationTpe} from '@utils/consts';
const {SelfApplication, Accounts, ThirdApplication} = ApplicationTpe;
console.log(SelfApplication, Accounts, ThirdApplication)  // 0 1 2

如果给初始值定义一个值，则其后的值是定义的值依次累加
const.ts:

export enum ApplicationTpe {
    SelfApplication = 2,
    Accounts,
    ThirdApplication
}

import {ApplicationTpe} from '@utils/consts';
const {SelfApplication, Accounts, ThirdApplication} = ApplicationTpe;
console.log(SelfApplication, Accounts, ThirdApplication)  // 2 3 4

当然也可以给各个值手动赋值
const.ts:

export enum ApplicationTpe {
    SelfApplication = 6,
    Accounts = 3,
    ThirdApplication = 2
}

import {ApplicationTpe} from '@utils/consts';
const {SelfApplication, Accounts, ThirdApplication} = ApplicationTpe;
console.log(SelfApplication, Accounts, ThirdApplication)  // 6 3 2