Assorted tweaks

[XhmikosR]

I split and adapted the patches from #28 so that we can land this and have a patch version.

Test run: https://github.com/XhmikosR/node-source-walk/actions?query=branch%3Adev-1

/CC @mrjoelkemp

[XhmikosR]

@mrjoelkemp friendly ping :)

I've made PRs in all node-precinct's dependencies and you should be able to cut new patch releases after this PR is addressed and I update the other packages to use the new version of node-source-walk in my PRs.

[mrjoelkemp]

@mrjoelkemp friendly ping :)

I've made PRs in all node-precinct's dependencies and you should be able to cut new patch releases after this PR is addressed and I update the other packages to use the new version of node-source-walk in my PRs.

Thank you!

[XhmikosR]

@mrjoelkemp I think this is broken, sorry about that. Getting failures on the other repos:

     AssertionError [ERR_ASSERTION]: Got unwanted exception.
Actual message: "Cannot create property 'parent' on number '0'"

Trying to fix this as we speak.

[mrjoelkemp]

You should have permissions to push and publish fixes. Feel free.

[XhmikosR]

I'm not sure if it's a bug per se, being that and empty string is a string so the typeof check is passing (for example in node-detective-scss):

module.exports = function detective(fileContent) {
  if (typeof fileContent === 'undefined') throw new Error('content not given');
  if (typeof fileContent !== 'string') throw new Error('content is not a string');
  // ...
}

Regardless, I think I'm going to revert the strict mode change and publish a patch version until I figure this out.