File size: 843 Bytes
3e05655 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | import { createComputed, onCleanup } from "solid-js"
export function createSessionOwnership(sessionKey: () => string) {
let current = sessionKey()
let generation = 0
const transition = () => {
const next = sessionKey()
if (next === current) return
current = next
generation++
}
createComputed(transition)
onCleanup(() => generation++)
return {
key: () => {
transition()
return `${generation}:${current}`
},
capture() {
transition()
const captured = generation
return {
key: `${captured}:${current}`,
current: () => {
transition()
return generation === captured
},
run<T>(action: () => T) {
transition()
if (generation !== captured) return
return action()
},
}
},
}
}
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