Panic illustration at "github.com/yohamta/donburi"

main.go

package main

import "github.com/yohamta/donburi"

type MyData1 struct {
}

type MyData2 struct {
}

var (
	My1 = donburi.NewComponentType[MyData1]()
	My2 = donburi.NewComponentType[MyData1]()
)

func main() {

	world := donburi.NewWorld()

	entity := world.Create(My1)
	entry := world.Entry(entity)
	_ = donburi.Get[MyData1](entry, My1)
	donburi.Add[MyData2](entry, My2, &MyData2{})

	entity = world.Create(My1)
	entry = world.Entry(entity)
	donburi.Add[MyData2](entry, My2, &MyData2{})
}