gridsome.server.js

// Server API makes it possible to hook into various parts of Gridsome
// on server-side and add custom data to the GraphQL data layer.
// Learn more: https://gridsome.org/docs/server-api

// Changes here require a server restart.
// To restart press CTRL + C in terminal and run `gridsome develop`

module.exports = function (api) {
  api.loadSource(store => {
    // Use the Data Store API here: https://gridsome.org/docs/data-store-api

    const data = require('./data/settings.json');

    const Menu = store.addCollection({typeName: 'Menu'})

    for(const item of data.sidebar){
    	Menu.addNode({
        section: item.section,
        topics: item.topics
	    })
    }
  })

  api.createPages(({ createPage }) => {
    // Use the Pages API here: https://gridsome.org/docs/pages-api
  })
}