These archived docs are for Phaser 2.2.2 Phaser 3 docs can be found on newdocs.phaser.io.
Phaser CE docs can be found on the Phaser CE Documentation site.

Constructor

Phaser. Easing

new Easing()

A collection of easing methods defining ease-in and ease-out curves.

Source code: tween/Easing.js, line 14