Adds Platform helpers to `internal` package #644

	name: Run Tests

	on:
	pull_request:
	push:
	branches: main

	jobs:
	run-unit-tests:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

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

	- uses: actions/cache@v2
	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-

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

	- name: Lint
	run: yarn lint

	- name: TypeScript Check
	run: yarn ts:check

	# - name: Core Tests
	# run: yarn test

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