function updateSnippets()

in src/emmetHelper.ts [1046:1081]
34 lines of code
12 McCabe index (conditional complexity)

function updateSnippets(snippetsJson: any) {
	if (typeof snippetsJson === 'object' && snippetsJson) {
		Object.keys(snippetsJson).forEach(syntax => {
			if (!snippetsJson[syntax]['snippets']) {
				return;
			}
			const baseSyntax = getDefaultSyntax(syntax);
			let customSnippets = snippetsJson[syntax]['snippets'];
			if (snippetsJson[baseSyntax] && snippetsJson[baseSyntax]['snippets'] && baseSyntax !== syntax) {
				customSnippets = Object.assign({}, snippetsJson[baseSyntax]['snippets'], snippetsJson[syntax]['snippets'])
			}
			if (!isStyleSheet(syntax)) {
				// In Emmet 2.0 all snippets should be valid abbreviations
				// Convert old snippets that do not follow this format to new format
				for (const snippetKey in customSnippets) {
					if (customSnippets.hasOwnProperty(snippetKey)
						&& customSnippets[snippetKey].startsWith('<')
						&& customSnippets[snippetKey].endsWith('>')) {
						customSnippets[snippetKey] = `{${customSnippets[snippetKey]}}`
					}
				}
			} else {
				const prevSnippetKeys = stylesheetCustomSnippetsKeyCache.get(syntax);
				const mergedSnippetKeys = Object.assign([], prevSnippetKeys, Object.keys(customSnippets));
				stylesheetCustomSnippetsKeyCache.set(syntax, mergedSnippetKeys);
			}
			const prevSnippetsRegistry = customSnippetsRegistry[syntax];
			const newSnippets = parseSnippets(customSnippets);
			const mergedSnippets = Object.assign({}, prevSnippetsRegistry, newSnippets);
			const mergedSnippetKeys = Object.keys(mergedSnippets);
			customSnippetsRegistry[syntax] = mergedSnippets;
		});
	} else {
		throw new Error(localize("emmetInvalidSnippets", "Invalid snippets file. See https://code.visualstudio.com/docs/editor/emmet#_using-custom-emmet-snippets for a valid example."))
	}
}