如何将编译器选项传递给mocha [英] how to pass compiler options to mocha

问题描述

我运行mocha命令运行测试

I run a mocha command to run my tests

$ ./node_modules/.bin/mocha --compilers coffee:coffee-script -R spec

我希望传递额外的选项到咖啡脚本编译器只是为了避免在编译.coffee到.js时引入的外部闭包）。有办法做到这一点吗？我尝试了

I wish to pass additional options to the coffee-script compiler (--bare to avoid the outer closure that is introduced when compiling .coffee to .js). Is there a way to do this? I tried

$ ./node_modules/.bin/mocha --compilers coffee:coffee-script --bare -R spec

但看起来不正确。它也失败说--bare不是摩卡的有效选项。

but that doesn't look right. It also failed saying that --bare is not a valid option for mocha.

  error: unknown option `--bare'

推荐答案

--compiler选项不支持这个，但是你可以编写一个脚本，激活编译器的选项，然后使用mocha --require选项激活注册脚本。例如，在名为babelhook.js的项目根目录下创建一个文件：

The --compiler option doesn't support this, but you can write a script which activates the compiler with your options, then use mocha's --require option to activate your registration script. For example, create a file at the root of the project called babelhook.js:

// This file is required in mocha.opts
// The only purpose of this file is to ensure
// the babel transpiler is activated prior to any
// test code, and using the same babel options

require("babel/register")({
  experimental: true
});

然后将其添加到mocha.opts：

Then add this to mocha.opts:

--require babelhook

Mocha在任何测试之前都需要babelhook.js。

And that's it. Mocha will require babelhook.js before any tests.

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