[wct] Fixing formatting

[merlinnot]

Hi, in the coming days I'll be working on some issues with WCT. Do you mind if I make a PR with Prettier configuration?

[TimvdLippe]

This repository is formatted with CLang (for example https://github.com/Polymer/tools/blob/master/packages/bundler/.clang-format) However it appears that the root folder does not have this configuration yet. Instead, I would say that standardizing the formatting across all packages would be a more appropriate change, rather than changing CLang to Prettier.

[merlinnot]

Oh, ok. Than I'd like to:

• make a precommit hook to run clang format
• make a configuration compatible with tslint

Is that ok?

I've noticed some misformatted files:

$ git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
$ yarn format
yarn run v1.5.1
$ find runner test | grep '\.js$\|\.ts$' | xargs ./node_modules/.bin/clang-format --style=file -i
Done in 0.73s.
$ git diff --name-only
packages/web-component-tester/runner/webserver.ts
packages/web-component-tester/test/fixtures/integration/query-string/test/tests.js
packages/web-component-tester/test/integration/setup_test_dir.ts
packages/web-component-tester/test/unit/cli.ts
packages/web-component-tester/test/unit/config.ts
packages/web-component-tester/test/unit/context.ts
packages/web-component-tester/test/unit/grunt.ts
packages/web-component-tester/test/unit/gulp.ts
packages/web-component-tester/test/unit/paths.ts

[TimvdLippe]

I am not a member of the tools team, so they might have a different view. In any case, recently @e111077 has pushed https://github.com/PolymerLabs/webmat to auto-format all the element repositories (see PolymerElements/paper-input#648 with an example on how to fail the Travis build). Maybe that tool can be used for this repository as well.

Let's see what the tools team thinks of this before taking any action.

[merlinnot]

That's exactly why I created an issue before making any PR.

[merlinnot]

Related issue: #224

[merlinnot]

Closing due to inactivity.