Run results for: Optional Chaining plus Nullish Coalescing versus _.get lodash

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; SM-A530F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.119 Mobile Safari/537.36

Browser: Chrome Mobile 80

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
Optional Chaining	643647.9 Ops/sec
Lodash	351801.9 Ops/sec

Script Preparation code:

var obj = {a: {b: {c: {d: 1}}}}
var badObj = {}

Tests:

Optional Chaining
var c = obj.a == null ? undefined : obj.a.b == null ? undefined : obj.a.b.c == null ? undefined : obj.a.b.c.d c == null ? 2 : c var d = badObj.a == null ? undefined : badObj.a.b == null ? undefined : badObj.a.b.c == null ? undefined : badObj.a.b.c.d d == null ? 2 : d
Lodash
_.get(obj, "a.b.c.d", 2) _.get(badObj, "a.b.c.d", 2)