Add native return types where possible #34

	name: Static analysis

	on:
	push:
	branches:
	- main
	pull_request:
	# Run on all PRs

	env:
	CI: "true"

	jobs:
	phpstan:
	name: PHPStan
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2

	- name: Get Composer Cache Directory
	id: composer-cache
	run: \|
	echo "::set-output name=dir::$(composer config cache-files-dir)"

	- name: Cache Composer packages
	uses: actions/cache@v3
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
	restore-keys: \|
	${{ runner.os }}-composer-

	- name: Install dependencies
	run: composer update
	--no-ansi
	--no-interaction
	--no-progress
	--no-suggest
	--prefer-dist

	- name: PHPStan
	run: vendor/bin/phpstan
	analyse
	--error-format=github

	require-checker:
	name: Require checker
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2

	- name: Get Composer Cache Directory
	id: composer-cache
	run: \|
	echo "::set-output name=dir::$(composer config cache-files-dir)"

	- name: Cache Composer packages
	uses: actions/cache@v3
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
	restore-keys: \|
	${{ runner.os }}-composer-

	- name: Install dependencies
	run: composer update
	--no-ansi
	--no-interaction
	--no-progress
	--no-suggest
	--prefer-dist

	- name: Composer require-checker
	run: vendor/bin/composer-require-checker check

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