我如何决定@types/* 是进入`dependencies` 还是`devDependencies`? [英] How do I decide whether @types/* goes into `dependencies` or `devDependencies`?

问题描述

我在我的项目中使用 TypeScript 2.我想使用一些 js 库，但也想使用该库的类型.我可以使用简单的 npm install @types/some-library 安装类型.我不确定我是否应该 --save 或 --save-dev 它们.在我看来，即使 DefintelyTyped GitHub 自述文件也提到了这两个版本，但从未解释过它们.我认为@types 应该在 devDependencies 中，因为类型是开发所需要的，而不是在运行时使用，但我在 dependencies 中看到很多次 @types.我很困惑.

I use TypeScript 2 in my project. I'd like to use some js library, but also typings for that library. I can install types with simple npm install @types/some-library. I'm not sure if I should --save or --save-dev them. It seems to me that even DefinetelyTyped GitHub readme kind of mentions both versions, but never explains them. I would think that @types should be in devDependencies, as types are needed for development and aren't used in runtime, but I saw many times @types in just dependencies. I'm confused.

我应该如何决定@types/* 是进入dependencies 还是devDependencies?是否有或多或少的官方说明?

How should I decide whether @types/* goes into dependencies or devDependencies? Are there actually some more or less official instructions?

推荐答案

假设您正在开发一个包A"，它在 devDependencies 中有 @types/some-module 包.出于某种原因，您从 @types/some-module

Let's say you're developing a package "A" that have @types/some-module package in devDependencies. For some reason you're exporting the type from @types/some-module

import {SomeType} from 'some-module';
export default class APackageClass {
     constructor(private config: SomeType) {

     }
}

现在包A"的 Typescript 消费者无法猜测 SomeType 是什么，因为包A"的 devDependencies 没有安装.

Right now Typescript consumers of package "A" are unable to guess what SomeType is, since devDependencies of package "A" are NOT installed.

在这种特殊情况下，您需要将@types/* 包与常规依赖项"放置在一起.对于其他情况，devDependencies"就足够了.

In that particular case you NEED to place @types/* package with regular "dependencies". For other cases "devDependencies" are good enough.

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