node.js - Node + typescript : Cannot redeclare block-scoped variable 'events'

Question

我正在将 Node + ES6 项目转换为 TypeScript。我的目标是 ES6(因为我运行的是 Node 7.x)并使用 Map。

正在运行tsc -p返回:

• src/actions.ts(3,9): error TS2451: Cannot redeclare block-scoped variable 'events'
• src/calendar.ts(5,10): error TS2300: Duplicate identifier 'fetchEvents'.
• src/index.ts(3,5): error TS2403: Subsequent variable declarations must have the same type. Variable 'actions' must be of type 'Map<any, any>', but here has type 'any'.

尚不清楚为什么这些是重复的标识符或被标记为重新声明，特别是在 Node 的 require/module 导入的上下文中。使用标准const在 require 声明中更严重地破坏了这一点。

日历.ts

const { rp } = require("request-promise")

var events = <any> {}

// both are exported via module.exports = { events, fetchEvents }
function fetchEvents(key: string, url: string, options: object) {
    ...

actions.ts

const moment = require("moment")
var { events, fetchEvents } = require("./calendar")

var actions = new Map()

tsconfig.json

{
  "compilerOptions": {
    "target": "es6",
    "outDir": "./built",
    "declaration": true,
    "rootDir": ".",
    "baseUrl" : "./packages",
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "noImplicitAny": false,
    "strictNullChecks": true,
    "noImplicitReturns": true,
    "noImplicitThis": true
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "dist",
    "node_modules",
    ".vscode"
  ]
}

Answer 1

不确定 var {... 构造是否有效。 var 使变量具有全局作用域。

如果您在 actions.ts 中使用会怎样:

const moment = require("moment")
import calendar = require("./calendar");
// console.log(calendar.events) 

？