Handle unnecessary_non_null_assertion and invalid_null_aware_operator #999

	# A CI workflow to run the Dart Code Metrics analyzer (https://dcm.dev).

	name: Dart Code Metrics

	on:
	pull_request:
	types: [synchronize, opened, reopened]
	branches:
	- main

	jobs:
	dcm:
	name: Dart Code Metrics
	runs-on: ubuntu-latest
	steps:
	- name: Install DCM
	run: \|
	sudo apt-get update
	wget -qO- https://dcm.dev/pgp-key.public \| sudo gpg --dearmor -o /usr/share/keyrings/dcm.gpg
	echo 'deb [signed-by=/usr/share/keyrings/dcm.gpg arch=amd64] https://dcm.dev/debian stable main' \| sudo tee /etc/apt/sources.list.d/dart_stable.list
	sudo apt-get update
	sudo apt-get install dcm=1.16.2-1 # To avoid errors add `-1` (build number) to the version
	sudo chmod +x /usr/bin/dcm
	- name: Setup Dart SDK
	uses: dart-lang/setup-dart@e630b99d28a3b71860378cafdc2a067c71107f94
	with:
	sdk: dev
	- id: checkout
	name: Checkout repository
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
	with:
	ref: "${{ github.event.pull_request.head.sha }}"
	- id: dwds_pub_upgrade
	name: dwds; dart pub upgrade
	run: dart pub upgrade
	if: "always() && steps.checkout.conclusion == 'success'"
	working-directory: dwds
	- name: Run DCM on DWDS
	run: dcm analyze lib
	working-directory: dwds

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