[nolanl]

(I'm the author of the article you cite.)

For the record, Chrome has been working on improving their postMessage performance as of M57 [1], so my benchmark should probably be re-run.

Assuming they end up in the same ballpark as Safari and Edge, the only browser for which stringification would still make sense is Firefox. (And maybe they have improved in the past year too. :))

But a lot of the conclusions from that article came from the fact that non-stringified postMessage perf was so bad in Chrome, which especially impacted performance on Android devices.

[1]: https://twitter.com/cramforce/status/824273332258209792