我什么时候需要三斜杠参考? [英] When do I need a triple slash reference?

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问题描述

当 Anders Hejlsberg 在以下视频中 35:00 左右谈论外部模块时......

When Anders Hejlsberg is talking about external modules around 35:00 in the following video...

Anders Hejlsberg:TypeScript 简介

...为什么文件 server.ts 需要对 node.d.ts 的三斜杠引用,而 hello.ts 不需要类似的引用server.ts?

... why does the file server.ts require a triple slash reference to node.d.ts where as hello.ts doesn't require a similar reference to server.ts?

特别是在 hello.ts 中,他提到存在智能感知,并且他可以使用从 server.ts 导出的项目.那么三重斜线引用还能添加什么?

In particular in hello.ts he mentions that intellisense is present plus he gets to use the exported item from server.ts. So what more could the triple slash reference add?

推荐答案

在两种情况下需要三斜线引用:

You need a triple slash reference in two scenarios:

  • When you are referencing JavaScript type definitions e.g. definitions for node, jQuery, etc. for a great collection see : https://github.com/DefinitelyTyped/DefinitelyTyped
  • When we want to compile using --out you can reference your files using /// <reference.

使用外部模块时需要import/require组合,即amd/commonjs.如果您不知道这些是什么意思(amd/commonjs 是 javascript 术语,并非特定于打字稿),您不必关心.只需使用 /// 并使用 --out 进行编译.

You need a import/require combo when using external modules i.e. amd/commonjs. If you don't know what these mean (amd/commonjs are javascript terms, not specific to typescript) you don't have to care. Just use /// <reference and compile with --out.

PS:我有一个关于内部模块与外部模块的视频教程:TypeScript Modules揭秘:内部,AMD 带 RequireJS,CommonJS 带 NodeJS

PS: I have a video tutorial on internal vs. external modules: TypeScript Modules Demystified : Internal, AMD with RequireJS, CommonJS with NodeJS

新项目请使用 tsconfig.json 而不是参考注释:https://basarat.gitbook.io/typescript/project/compilation-context

Please use tsconfig.json for new projects instead of reference comments : https://basarat.gitbook.io/typescript/project/compilation-context

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