javascript - TypeScript 经常出现问题并且更喜欢 import 而不是 require

Question

只要有可能，我都会尝试使用 import 而不是 require 但在某些情况下，这会破坏类型检查。处理这个问题的正确方法是什么？是否可以导入？不是所有的 require 都可以用 import 替换吗？

左:属性“get”不存在...

正确:import * as convict from "convict"; 而不是 require("convict");

左:

"use strict";

import * as Busboy from "busboy";
import * as convcit from "convict";
import * as config from "./config";
import * as express from "express";
import * as helmet from "helmet";
import * as logger from "morgan";
import * as path from "path";

import * as requestDebug from "request-debug";
import * as requestJs from "request";

// [ts] Property 'get' does not exist on type 'typeof "PrizmDoc-Node.js-Sample/config"'.
if (config.get("env") !== "production") {
    requestDebug(requestJs);
}

...

右:

//let convict = require("convict");

import * as convict from "convict";

const config = convict({
    "env": {
        "doc": "The application environment.",
        "format": ["production", "development", "test"],
        "default": "development",
        "env": "NODE_ENV"
    },

...

module.exports = config;

Answer 1

不幸的是，这是您的一个依赖项 convict 的类型问题。查看 @types/convict 来源:

https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/convict/index.d.ts#L122

他们使用 export = ... 导出定义，根据 Typescript 手册:

https://www.typescriptlang.org/docs/handbook/modules.html (请参阅“export = 和 import = require()”标题)

中断 import * from ... 导入。所以，你有点卡在这个上面了。