extensions/markdown-language-features/src/markdownExtensions.ts/equal
	export function equal(a: MarkdownContributions, b: MarkdownContributions): boolean {
		return arrays.equals(a.previewScripts, b.previewScripts, uriEqual)
			&& arrays.equals(a.previewStyles, b.previewStyles, uriEqual)
			&& arrays.equals(a.previewResourceRoots, b.previewResourceRoots, uriEqual)
			&& arrays.equals(Array.from(a.markdownItPlugins.keys()), Array.from(b.markdownItPlugins.keys()));
	}