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| 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 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | 68x 68x 144x 144x 72x 128x 99x 99x 17x 18x 8554x 22489x 263x 82x 82x 82x 531x 62x 62x 51x 51x 62x 62x 62x 49x 49x 62x 62x 48x 48x 5417x 5417x 5417x 5417x 5023x 5023x 2600x 149x 149x 149x 149x 145x 145x 112x | type Key = string
type Listener = () => void
const counts = new Map<Key, number>()
const listeners = new Map<Key, Set<Listener>>()
function notify(key: Key): void {
const set = listeners.get(key)
if (set) {
for (const listener of set) {
listener()
}
}
}
export function refCountKey(entityPath: string, params: unknown): Key {
return `${entityPath}:${JSON.stringify(params)}`
}
export function getRefCount(key: Key): number {
return counts.get(key) ?? 0
}
export function incrementRefCount(key: Key): number {
I const next = (counts.get(key) ?? 0) + 1
counts.set(key, next)
notify(key)
return next
}
export fEunction decrementRefCount(key: Key): number {
const current = counts.get(key)
if (current === undefined) {
return 0
}
const next = current - 1
if (next === 0) {
counts.delete(key)
} else {
counts.set(key, next)
}
notify(key)
return next
}
export function subscribeRefCount(key: Key, listener: Listener): () => void {
const set = listeners.get(key) ?? new Set()
set.add(listener)
listeners.set(key, set)
return () => {
set.delete(listener)
if (set.size === 0) {
listeners.delete(key)
}
}
}
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