Class Archetype

Example

//components
class A {}
class B {}

//This archetype contains entities with component A
const archetype1 = new Archetype()
archetype.components.set("A",[])

//This archetype contains entities with component A and B
const archetype2 = new Archetype()
archetype.components.set("A",[])
archetype.components.set("B",[])
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