https://developer.mozilla.org/en-US/docs/Web/API/structuredClone

testLS

json-diff-patch vs fast-json-patch

Test String.match with regex against String.split with string. We are splitting a string at the spaces.

Produce a deep copy of a Javascript object where nested objects are not simply references to the originals.

https://developer.mozilla.org/en-US/docs/Web/API/structuredClone

https://developer.mozilla.org/en-US/docs/Web/API/structuredClone