Validation #8

	name: JSON linter + luacheck
	on: [push, pull_request, workflow_dispatch]
	jobs:
	# Check JSON assets for syntax errors.
	json-linter:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Install dependencies
	run: ( cd tests/ci && npm install )
	- name: RUN -- npm test
	run: ( cd tests/ci && npm test )
	# Check Lua files with "luacheck" tool (Lua static analyzer).
	luacheck:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Install dependencies
	run: sudo apt-get install -y luarocks && sudo luarocks install luacheck
	# Don't fail if the exit code is 1 (which means "there were warnings, but no errors"),
	# only on exit code 2 ("there were errors").
	- name: RUN -- luacheck .
	run: luacheck --no-color . \|\| [[ $? -le 1 ]]

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