Here's Mathias' awesome breakdown of the JSON.parse trick for speeding up state transfers. Quick, easy optimization with sometimes dramatic gains. It's faster in all browsers. He mentions my case study, if you're curious, here's my write-up on that: https://joreteg.com/blog/improving-redux-state-transfer-performance …https://twitter.com/mathias/status/1198266203413897216 …
For large JSON-compatible objects, JSON.parse is faster than JS object literals.
True for all browser JavaScript engines!
Speed-ups from 1.2× to 2×
My 
