如何运行用TypeScript编写的Mocha测试? [英] How to run Mocha tests written in TypeScript?

问题描述

设置:我有一个用TypeScript编写的Node项目(纯Node，没有浏览器位).我可以使用typescript模块中的TypeScript编译器(tsc)来编译代码.到目前为止一切顺利.

Setup: I have a Node project (pure Node, no browser bits) written in TypeScript. I can use the TypeScript compiler (tsc) from the typescript module to compile the code. So far so good.

但是，我想使用Mocha编写测试，这就是我遇到的麻烦.我尝试了--compilers ts:typescript，但我不断收到类似这样的错误:

However, I want to write tests using Mocha, and that's where I'm having trouble. I tried --compilers ts:typescript, but I keep getting errors like:

error TS5023: Unknown compiler option 'compilers'.

mocha的命令行看起来最终被传递给了tsc，这显然不好.

It looks like the command line to mocha ends up being passed to tsc, which is obviously not good.

推荐答案

对于尝试过 typescript-require 并遇到问题的任何人，您可能都想尝试

For anybody who has tried and had problems with typescript-require you may want to try ts-node.

$ npm install -g ts-node
$ mocha test.ts --require ts-node/register src/**/*.spec.ts

似乎也有关于不赞成使用Typescript-的正在进行的讨论需要支持ts-node.

It also appears that there has been some ongoing discussion about deprecating typescript-require in favor of ts-node.

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