ESLint #34

	name: ESLint
	on: [push]
	jobs:
	eslint:
	name: ESlint
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node-version: [16.x]
	steps:
	- uses: actions/checkout@v2

	# node setup
	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v1
	with:
	node-version: ${{ matrix.node-version }}

	# node cache
	- name: Get yarn cache directory path
	id: yarn-cache-dir-path
	run: echo "::set-output name=dir::$(yarn cache dir)"
	- uses: actions/cache@v3
	id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
	with:
	path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
	key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
	restore-keys: \|
	${{ runner.os }}-yarn-

	# node install
	- run: yarn --frozen-lockfile

	- name: ESlint check
	run: yarn run lint

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