Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36
Chrome 83
Mac OS X 10.15.5
Desktop
3 years ago
Test name Executions per second
_.mapValues(collection, () => "a") 43020.8 Ops/sec
Object.keys(collection).reduce( (acc, item) => ({ ...acc, [item]: "a", }), {} ) 32801.5 Ops/sec
HTML Preparation code:
Script Preparation code:
Tests:
  • _.mapValues(collection, () => "a")

  • Object.keys(collection).reduce( (acc, item) => ({ ...acc, [item]: "a", }), {} )