src/vs/platform/userDataSync/common/abstractSynchronizer.ts/AbstractJsonFileSynchroniser/hasErrors
class AbstractJsonFileSynchroniser:	protected hasErrors(content: string): boolean {
		const parseErrors: ParseError[] = [];
		parse(content, parseErrors, { allowEmptyContent: true, allowTrailingComma: true });
		return parseErrors.length > 0;
	}