chore(deps): upgrade to gts v2

[JustinBeckwith]

This is using a pre-release version of gts, but I think it's ready for a look. I'd honestly be ok with merging it as is. I want to put a few more miles on the new system before releasing 2.0.0.

A few things to discuss:

• I used a more minimal prettier config that adds the spaces back around brackets, and leaves out trailing commas. I don't care about either of these, so I prefer whatever prettier tells me is best.
• We need to be way more careful with prettierignore and eslintignore with the new gts. We can no longer rely on the tsconfig to tell us what files to look at

Feedback welcomed 🤗

[bcoe]

I can't wait to merge this 👍

[alexander-fenster]

So... how about disabling this option in prettier config to make the result much closer to what we have now?

        "bracketSpacing": {
          "description": "Print spaces between brackets.",
          "default": true,
          "type": "boolean"
        }

[JustinBeckwith]

nods we absolutely could do that. I was thinking of reducing the amount of prettier customizations we do, and keep it as close to the default config as possible. That includes dropping bracket spacing, and the trailing commas.

If we want to optimize for lowest changes, we could keep adding those customizations in.

[alexander-fenster]

Oh. There is a serious risk of starting a discussion about style here :)

I get your point about keeping minimal config, but one thing about gts default style is that it more or less did what's explained in Google JavaScript Style Guide. For some reason I feel it might make sense to adhere to that style guide :) It puts no space between brackets, and uses trailing commas.

But again, I just thought that keeping the formatting (if not too hard) is a good idea, but I'm OK with either decision.

[JustinBeckwith]

Sounds good :) gts update here:
google/gts#440

[codecov]

Codecov Report

Merging #232 into master will increase coverage by 0.65%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #232      +/-   ##
==========================================
+ Coverage   97.84%   98.49%   +0.65%     
==========================================
  Files           6        4       -2     
  Lines         602      599       -3     
  Branches      102       95       -7     
==========================================
+ Hits          589      590       +1     
+ Misses         13        9       -4     

Impacted Files	Coverage Δ
src/common.ts	100.00% <100.00%> (ø)
src/gaxios.ts	96.56% <100.00%> (-0.36%)	⬇️

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[bcoe]

This is looking very reasonable to me, I appreciate that the code changes are fairly minimal.