Run results for: conditionally insert properties w/ terinary

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.105 Mobile Safari/537.36

Browser: Chrome Mobile 89

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
boring	1376926.0 Ops/sec
spread	1179760.0 Ops/sec
Object.assign	646177.8 Ops/sec
Terinary	1375366.0 Ops/sec

Tests:

boring
const obj = { hello: "world" }; if (Math.random()>.5) { obj.foo = "bar"; }
spread
const obj = { hello: "world", ...Math.random()>.5 && { foo: "bar" } };
Object.assign
const obj = Object.assign({ hello: "world" }, Math.random()>.5 && { foo: "bar" });
Terinary
const obj = { hello: "world" }; Math.random()>.5 ? obj.foo = "bar" : false

Run results for: conditionally insert properties w/ terinary

https://www.reddit.com/r/javascript/comments/mrzrty/the_shortest_way_to_conditionally_insert/

boring

spread

Object.assign

Terinary