remove package-lock #4

	name: Unit Tests

	on:
	push:
	pull_request:

	jobs:
	tests:
	name: Unit tests
	strategy:
	matrix:
	node: ['10.x', '12.x']

	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Setup node
	uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node }}

	- name: Get cache directory
	id: yarn-cache
	run: echo "::set-output name=dir::$(yarn cache dir)"

	- name: Cache yarn dependencies
	uses: actions/cache@v1
	with:
	path: ${{ steps.yarn-cache.outputs.dir }}
	key: yarn-${{ hashFiles('**/yarn.lock') }}
	restore-keys: \|
	yarn-

	- name: Install dependencies
	run: yarn install --frozen-lockfile

	- name: Run tests
	run: yarn test

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