在 package.json 脚本中，我如何将参数传递给 node，而不是脚本？

Question

I've got a script in my package.json that looks like this:

  "scripts": {
    "test": "... && mocha --full-trace test/db test/http test/storage test/utils",

I want to pass --async-stack-traces into mocha, but --async-stack-traces is a node command line argument, not a mocha command line argument.

I think I could achieve this by running node --async-stack-traces node_modules/mocha/bin/mocha --full-trace test/db test/http test/storage test/utils , but something about that feels inelegant or non-idiomatic. Is there another way to achieve this?

Answer 1

The way you wrote it is basically the way to do it:

node --async-stack-traces node_modules/mocha/bin/mocha --full-trace test/db test/http test/storage test/utils

You can tidy it up a little bit by using node_modules/.bin like this:

node --async-stack-traces node_modules/.bin/mocha --full-trace test/db test/http test/storage test/utils

This next one probably isn't Windows compatibile and is not as easily understandable, but if you only support UNIX-like operating systems, you can rely on the $PATH injection of npm scripts to tidy it a bit more:

node --async-stack-traces `which mocha` --full-trace test/db test/http test/storage test/utils

If you don't want to rely on whereis , you can use npm bin :

node --async-stack-traces `npm bin`/mocha --full-trace test/db test/http test/storage test/utils

Hopefully at this point, you're throwing up your hands and going back to the first or second option above. (I recommend the second option, so you're not dependent on the mocha package layout, which conceivably could change.)