When we landed bug 1495397, we missed telling tools/lint/eslint/setup_helper.py about checking the devDependencies, so currently detecting updates for developer installs has only been working based on the fact I generally update eslint-plugin-mozilla's package.json at the same time as the top-level one.

Additionally, when running the update.sh scripts to update the servers with new node_modules bundles, I'm seeing:

Traceback (most recent call last):
File "./python/mozbuild/mozbuild/action/tooltool.py", line 1304, in <module>
sys.exit(main(sys.argv))
File "./python/mozbuild/mozbuild/action/tooltool.py", line 1301, in main
return 0 if process_command(options, args) else 1
File "./python/mozbuild/mozbuild/action/tooltool.py", line 1188, in process_command
options['unpack'])
File "./python/mozbuild/mozbuild/action/tooltool.py", line 666, in add_files
new_manifest.dump(output, fmt='json')
File "./python/mozbuild/mozbuild/action/tooltool.py", line 534, in dump
print >> output_file, ''
TypeError: unsupported operand type(s) for >>: 'builtin_function_or_method' and 'file'

I have a fix for both of those.

There's also an update to mocha that we use for eslint-plugin-mozilla, so I'd like to grab that at the same time.

Depends on D31075

Depends on D31076

\o/

https://hg.mozilla.org/mozilla-central/rev/e7a45a6189d2
https://hg.mozilla.org/mozilla-central/rev/b392953074b0
https://hg.mozilla.org/mozilla-central/rev/b41a2b516180