Run results for: Optional Chaining versus _.get lodash

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_1_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/14.0b12646 Mobile/16D57 Safari/605.1.15

Browser: Mobile Safari 12

Operating system: iOS 12.1.4

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
Optional Chaining	1445352.9 Ops/sec
Lodash	463435.4 Ops/sec

Script Preparation code:

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

Tests:

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

Run results for: Optional Chaining versus _.get lodash

Optional Chaining

Lodash