Based on the JamStack by using Gatsby v2, GraphQL & Contentful.
Provide the file .contentful.json to locally develop as follows. You will develop with the preview api locally to see all drafts too.
"spaceId": "<fill in>",
"previewAccessToken": "<fill in>",
"previewHost": "preview.contentful.com"
If you need to debug graphql you can enable the query watcher:
rm -r .cache/ ; env "NODE_ENV=development" "DEBUG=gatsby:query-watcher" npm run dev