2019-01-12 UTC
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Zegnat http://microformats.org/wiki/microformats2-json should do a good job of describing what to expect of the JSON, it also links to 2 separate implementations of JSON validation you could use to check their validity. But there are no rules on whitespace for the parser output. Neither are there any rules for symbols that need unicode escapes, so parsers may be different from tests there as well. That’s all “flavour”