Variable ACTIVE_EFFECT_CHANGE_TYPES`Const`

ACTIVE_EFFECT_CHANGE_TYPES: Readonly<
    {
        add: 20;
        custom: 0;
        downgrade: 30;
        multiply: 10;
        override: 50;
        subtract: 20;
        upgrade: 40;
    },
> = ...

Define the core ActiveEffect change types and their default priorities. Other arbitrary string types can be used by systems and modules to identify special behaviors and are ignored.