Add object property validation in parser $369 #1325

Job	Run time
lint (npm run lint:eslint, macos)	1m 41s
pylint (macos)	11s
lint (npm run lint:eslint, ubuntu)	1m 3s
pylint (ubuntu)	13s
lint (npm run lint:eslint, windows)	4m 44s
todo-check	3s
pylint (windows)	57s
lint (npm run lint:yaml, macos)	1m 32s
lint (npm run lint:yaml, ubuntu)	29s
lint (npm run lint:yaml, windows)	4m 14s
lint (npm run lint:md, macos)	34s
lint (npm run lint:md, ubuntu)	30s
lint (npm run lint:md, windows)	5m 48s
lint (npm run lint:md:relative-urls, macos)	37s
lint (npm run lint:md:relative-urls, ubuntu)	28s
lint (npm run lint:md:relative-urls, windows)	3m 53s
lint (npm run lint:md:consistency, macos)	30s
lint (npm run lint:md:consistency, ubuntu)	32s
lint (npm run lint:md:consistency, windows)	2m 21s
	30m 20s

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