Run results for: bench concat spread jeff

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36

Browser: Chrome 79

Operating system: Mac OS X 10.15.4

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
concat	3107.9 Ops/sec
spread	465.9 Ops/sec

Tests:

concat
let i, x; let a = (new Array(1e3)).fill(99); let b = (new Array(1e3)).fill(99); let c = (new Array(1e3)).fill(99); let d = (new Array(1e3)).fill(99); for(i = 0; i < 1e2; i++) x = [1,2,3].concat(a, b, c, d)
spread
let i, x; let a = (new Array(1e3)).fill(99); let b = (new Array(1e3)).fill(99); let c = (new Array(1e3)).fill(99); let d = (new Array(1e3)).fill(99); for(i = 0; i < 1e2; i++) x = [1,2,3, ...a, ...b, ...c, ...d]