Run results for: Push vs spread vs copy and push, for appending single item

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36

Browser: Chrome 88

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Push	39330988.0 Ops/sec
Spread	23556158.0 Ops/sec

Tests:

Push
var arr = ["This", "is", "an", "array", "of", "strings", "which", "might", "be", "copied"]; arr.push("foo");
Spread
var arr = ["This", "is", "an", "array", "of", "strings", "which", "might", "be", "copied"]; arr = [...arr, "foo"];
Copy and push
var arr = ["This", "is", "an", "array", "of", "strings", "which", "might", "be", "copied"]; arr = arr.slice(); arr.push("foo");