Query - I love GraphQL (recent convert!) but I'm curious why it was used here? Given that the JSON data was static, not an API, and was already in a simple to use format, what was the purpose of using GraphQL to "query" it? Wasn't it already in a form appropriate for driving your dynamic navigation?
Read about Gatsby. It's built for reusability (themes) and GraphQL powers that. If she would release her creation as a theme, a user could build their own json in their own data folder, and Gatsby would resolve it.
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