使用 TypeScript 中的类型导入节点和表达 [英] Importing node and express with typings in TypeScript

问题描述

我正在尝试按照 Microsoft 指南 但是将其更改为使用 TypeScript 但是在使用 typings 安装类型定义时，我似乎必须安装比指南更多的包.

I am trying to set up a TypeScript express/node application in Visual Studio Code following the Microsoft guide but changing it to use TypeScript however when it comes to installing the type definitions using typings I seem to have to install more packages than the guide.

我正在运行以下命令对:

I'm running the following pair of commands:

typings install node --ambient --save
typings install express --ambient --save

但是，尝试仅使用这些包进行构建会出现以下类型的错误:

However attempting to build with just those packages gives the following type of error:

error TS2307: Cannot find module 'serve-static'.

对于以下类型:

• 哑剧
• express-serve-static-core
• 静态服务

我可以通过安装所需的类型来解决这个问题，但似乎类型本身应该做一些事情.

I can resolve this by installing the required typings but it seems like something typings should do by itself.

我想检查我是否遗漏了自动引入依赖项的基本步骤，或者指南是否已过时?

I wanted to check if I was missing a fundamental step to automatically pull in dependencies or whether the guide was outdated?

如果相关，我的 tsconfig.json:

In case it's relevant, my tsconfig.json:

{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "sourceMap": true,
        "outDir": "bin",
        "sourceRoot": "src"
    },
    "exclude": [
        "node_modules",
        "typings/browser.d.ts",
        "typings/browser"
    ]
}

我的 tsc 是 1.8.7 版，并且我在全局安装了 typescript.

My tsc is version 1.8.7 and I have typescript installed globally.

推荐答案

从上个月发布的 TypeScript 2.0 开始，推荐的安装 Typings 的工具是我们可信赖的老朋友 npm 而不是 typings 或 tsd.

As of the release of TypeScript 2.0 last month, the recommended tool for installing typings is our trusty old friend npm instead of typings or tsd.

npm install @types/node --save

使用 npm，您无需再担心全局"或环境"安装.

With npm, there's no need to worry about "global" or "ambient" installations anymore.

您也不必再担心将 标签添加到源文件的顶部；只需将以下属性放入 tsconfig.json 中的 compilerOptions 中，TypeScript 编译器将自动找到您安装的 npm 类型:

You also don't need to worry about adding <reference> tags to the top of your source files anymore; just drop the following property into your compilerOptions in tsconfig.json, and the TypeScript compiler will automatically find the npm typings you've installed:

"typeRoots": [ "node_modules/@types" ]

这里有一篇博文更详细地解释了这一变化:https://blogs.msdn.microsoft.com/typescript/2016/06/15/the-future-of-declaration-files/

Here's a blog post that explains the change in some more detail: https://blogs.msdn.microsoft.com/typescript/2016/06/15/the-future-of-declaration-files/

这篇关于使用 TypeScript 中的类型导入节点和表达的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！