无法在 Nodejs Typescript 应用程序中导入 URL 类
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Unable to import URL class in Nodejs Typescript app
提问by BossmanT
I am trying to import the URL class from the nodejs api so I can parse urls and retrieve their origin, hostname, and paths.
我正在尝试从 nodejs api 导入 URL 类，以便我可以解析 url 并检索它们的来源、主机名和路径。
I am trying to do it by typing
import * as URL from "url";
我正在尝试通过键入来做到这一点
import * as URL from "url";
and I have also tried
import { URL } from "url";
我也试过
import { URL } from "url";
and I cannot seem to get this to work for me. Any help would be greatly appreciated.
我似乎无法让它对我来说有效。任何帮助将不胜感激。
The way I am trying to use this is as such
我试图使用它的方式是这样的
var site = new URL("http://www.website.com");
var site = new URL("http://www.website.com");
And it is throwing an error because it states that URL is not a constructor
它抛出一个错误，因为它指出 URL 不是构造函数
回答by Saravana
The URL constructorwas introduced as part of node v7.0. import { URL } from "url";is the proper way to import it if you are using node >= v7.0. Make sure you are using the latest version of node typings as updated as well:
该URL构造被引入作为节点V7.0的一部分。import { URL } from "url";如果您使用 node >= v7.0，这是导入它的正确方法。确保您使用的是最新版本的节点类型以及更新：
npm install --save-dev @types/node
If your node version is < 7.0 then you can use the parsemethod:
如果您的节点版本 < 7.0，则可以使用以下parse方法：
import * as url from "url";
var site = url.parse("http://www.website.com");
回答by Zbigniew Zagórski
If someone is wondering how to use URLso code is portable between Node.js and browser environment, then i've came to this solution:
如果有人想知道如何使用URL这样的代码在 Node.js 和浏览器环境之间是可移植的，那么我来到了这个解决方案：
import * as nodeUrl from "url";
const URL = typeof window !== "undefined" ? window.URL : nodeUrl.URL;
回答by Phix
import * as url from 'Url';
{ parse: [Function: urlParse],
resolve: [Function: urlResolve],
resolveObject: [Function: urlResolveObject],
format: [Function: urlFormat],
Url: [Function: Url]
}
It's not a constructor. You'll need to do use one of the exposed methods:
它不是构造函数。您需要使用公开的方法之一：
import * as url from 'url';
console.log(url.parse('https://www.google.com'))
// Output:
Url {
protocol: 'https:',
slashes: true,
auth: null,
host: 'www.google.com',
port: null,
hostname: 'www.google.com',
hash: null,
search: null,
query: null,
pathname: '/',
path: '/',
href: 'https://www.google.com/' }
undefined
>
