Helper scripts not found when installed through npm

[r0mflip]

Provide the steps to reproduce

$ npm i -g lighthouse
$ npm explore -g lighthouse -- ./lighthouse-core/scripts/download-chrome.sh

Result:

/bin/bash: ./lighthouse-core/scripts/download-chrome.sh: No such file or directory
npm ERR! file /bin/bash
npm ERR! code ENOENT
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! enoent spawn ENOENT
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 
npm ERR! enoent Check if the file '/bin/bash' is present.

What is the current behavior?

Scripts like download-chrome.sh cannot be found in the scripts directory. I've also downloaded the tar file from https://registry.npmjs.org/lighthouse/-/lighthouse-3.2.1.tgz and can't find any scripts inside it.

What is the expected behavior?

I use this technique by @aerotwist in a similar way to test my site.

It worked fine for some time(ref: https://travis-ci.org/cbitosc/cbitosc.github.io/builds/433659287, uses lighthouse 3.1.1) but then started to fail (ref: https://travis-ci.org/cbitosc/cbitosc.github.io/builds/433965520 uses lighthouse 3.2.0).

Same behavior persists on my local machine too.

Environment Information

• Affected Channels: CLI
• Lighthouse version: 3.2.1
• Node.js version: v10.11.0
• Operating System: Ubuntu 18.04

[paulirish]

Ah. This makes sense. we just changed out npmignore to exclude this script.

Yeah we can reintroduce this one. Thanks.

[r0mflip]

Thanks, closed in #6153