Object.assign vs mutate
Date tested:
8 years ago
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.75 Safari/537.36
Test name
Executions per second
Object.assign
185588.7 Ops/sec
Mutate
1801809.4 Ops/sec
Benchmark definition (click to collapse):
Script Preparation code:
var numbers = [1,2,3,4,5,6,7,8,9,10];
Tests:
Object.assign
numbers.reduce((obj, i) => Object.assign({}, obj, {i}), {});
Mutate
numbers.reduce((obj, i) => { obj[i] = i; return obj; }, {});
Open this result on MeasureThat.net