createStartEntry(context: ProcessStartContext) {
      return {
        action_name: 'Requesting bundle',
        bundle_url: context.req.url,
        entry_point: context.entryFile,
        bundler: 'delta',
        build_id: getBuildID(context.buildNumber),
        bundle_options: context.bundleOptions,
        bundle_hash: context.graphId,
        user_agent: context.req.headers['user-agent'] ?? 'unknown',
      };
    }
`entryFile` is relative to projectRoot, we need to use resolution function
to find the appropriate file with supported extensions.