duration
Defines the duration in milliseconds of all animated properties, or of a specific property.
Accepts
Numberequal to or greater than0- Function based value that returns a 
Numberequal to or greater than0 
Duration values higher than 1e12 or equal to Infinity are clamped internally to 1e12 (approximately 32 years).
Default
The animation duration value (default 1000).
To change the default value globally, update the engine.defaults object.
import { engine } from 'animejs';
engine.defaults.duration = 500;
duration code example
import { animate } from 'animejs';
const animation = animate('.square', {
  x: '17rem',
  rotate: {
    to: 360,
    duration: 1500, // Local duration only applied to rotate property
  },
  duration: 3000,  // Global duration applied to all properties
  loop: true,
  alternate: true
});
            <div class="medium row">
  <div class="square"></div>
</div>