Fix mgt.dev playground CSP blocking mock data proxy#3494
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[WIP] Fix playground issue on mgt.dev
Fix mgt.dev playground CSP blocking mock data proxy
Jun 26, 2026
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The mgt.dev playground stopped rendering components, failing with
Refused to connect because it violates the document's Content Security Policyon requests tohttps://graph.office.net/....The mock data middleware resolves its proxy endpoint from
https://cdn.graph.office.net/en-us/graph/api/proxy/endpoint, which returns a base URL onhttps://graph.office.net(also the hardcoded fallback inMockMiddleware.ts). Onlycdn.graph.office.netwas whitelisted in the CSPconnect-src, so all subsequent data requests were blocked.Changes
https://graph.office.netto theconnect-srcCSP directive in.storybook/addons/codeEditorAddon/codeAddon.js(live preview iframe).https://graph.office.netto theconnect-srcCSP directive in.storybook/post-process-index-file.js(built index page).