Switch to different linting tool.

[NodeGuy]

There's extraneous whitespace floating around the code which makes diffs harder to read.

JSHint used to have an flag for warning about extra whitespace but it was removed. Let's switch to a modern linter such as ESLint or even better adopt JavaScript Standard Style instead.

[nivida]

I switched to eslint and prettier as you can see here: #2000 :-)

[vibern0]

I switched to eslint and prettier as you can see here: #2000 :-)

Then, should this be moved to done?