Run results for: Object assign vs spread operator vs manual assign

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0

Browser: Firefox 106

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var originalObject = {
  a: 1,
  b: "string",
  c: true,
};

Tests:

Object assign
const copyObject = Object.assign({}, originalObject, { c: false });
Spread operator
const copyObject = { ...originalObject, c: false };
Manually
const copyObject = { a: originalObject.a, b: originalObject.b, c: false, };