I might be missing something here, but I don't think this requiresBundleAnalyzerPlugin at all, at least in recent versions of webpack. It looked to me like the output you get fromgenerateStatsFile: true is the same as you get from running webpack with the--json flag.

Also, I believe when using the config described in the README, your job will actually hang forever, asBundleAnalyzerPlugin withoutanalyzerMode: "disabled" will start an HTTP server that won't exit without user interaction. See:

webpack/webpack-bundle-analyzer#614