Fix chokidar options object in generateAndWatch

[leoj3n]

https://github.com/paulmillr/chokidar#path-filtering

[chasenlehara]

Since this isn’t associated with an issue, could you please explain what was broken and how this fixes it?

[leoj3n]

@chasenlehara When reading through the code noticed this ignore pattern looked wrong

pattern.push("!"+siteConfig.glob.ignore)

I gave the --watch flag a try, and sure enough it did not respect the ignore rules.

That code "!"+siteConfig.glob.ignore results in something like:

Which is not a valid glob ignore pattern.

There is chokidar->anymatch->micromatch->extglob which means you could add to pattern something like:

"!(a|b|c)"

But chokidar provides the ignored option for this purpose, so we can just pass in the array directly (like I have done in the PR) without needing to build that negation string.