Build

Update react monorepo to v19 #636

	name: Build
	on: [push]
	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Begin CI...
	uses: actions/checkout@v2

	- name: Use Node 14
	uses: actions/setup-node@v2
	with:
	node-version: 14.x

	- name: Use cached node_modules
	uses: actions/cache@v2
	with:
	path: node_modules
	key: nodeModules2-${{ hashFiles('**/yarn.lock') }}
	restore-keys: \|
	nodeModules-

	- name: Install dependencies
	run: yarn install --frozen-lockfile
	env:
	CI: true

	- name: Lint
	run: yarn lint
	env:
	CI: true

	- name: Test
	run: yarn test --ci --coverage --maxWorkers=2
	env:
	CI: true

	- name: Build
	run: yarn build
	env:
	CI: true

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