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Add memoize and batcher, bump versions

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This commit is contained in:
Jon Staab
2024-08-12 11:17:27 -07:00
parent a8d0f5bc4f
commit 5d2186825b
15 changed files with 132 additions and 108 deletions
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packages/store/src/index.ts
+14 -14
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@@ -68,8 +68,8 @@ export function withGetter<T>(store: Readable<T> | Writable<T>) {
export const throttled = <T>(delay: number, store: Readable<T>) =>
custom(set => store.subscribe(throttle(delay, set)))
export const createEventStore = (repository: Repository) => {
let subs: Sub<TrustedEvent[]>[] = []
export const createEventStore = <E extends TrustedEvent>(repository: Repository<E>) => {
let subs: Sub<E[]>[] = []
const onUpdate = throttle(300, () => {
const $events = repository.dump()
@@ -81,8 +81,8 @@ export const createEventStore = (repository: Repository) => {
return {
get: () => repository.dump(),
set: (events: TrustedEvent[]) => repository.load(events),
subscribe: (f: Sub<TrustedEvent[]>) => {
set: (events: E[]) => repository.load(events),
subscribe: (f: Sub<E[]>) => {
f(repository.dump())
subs.push(f)
@@ -102,7 +102,7 @@ export const createEventStore = (repository: Repository) => {
}
}
export const deriveEventsMapped = <T>({
export const deriveEventsMapped = <T, E extends TrustedEvent>({
filters,
repository,
eventToItem,
@@ -110,9 +110,9 @@ export const deriveEventsMapped = <T>({
includeDeleted = false,
}: {
filters: Filter[]
repository: Repository,
eventToItem: (event: TrustedEvent) => T
itemToEvent: (item: T) => TrustedEvent
repository: Repository<E>,
eventToItem: (event: E) => T
itemToEvent: (item: T) => E
includeDeleted?: boolean
}) =>
custom<T[]>(setter => {
@@ -120,7 +120,7 @@ export const deriveEventsMapped = <T>({
setter(data)
const onUpdate = batch(300, (updates: {added: TrustedEvent[]; removed: Set<string>}[]) => {
const onUpdate = batch(300, (updates: {added: E[]; removed: Set<string>}[]) => {
const removed = new Set()
const added = new Map()
@@ -150,7 +150,7 @@ export const deriveEventsMapped = <T>({
if (!includeDeleted && removed.size > 0) {
const [deleted, ok] = partition(
(item: T) => getIdAndAddress(itemToEvent(item)).some(id => removed.has(id)),
(item: T) => getIdAndAddress(itemToEvent(item)).some((id: string) => removed.has(id)),
data,
)
@@ -170,15 +170,15 @@ export const deriveEventsMapped = <T>({
return () => repository.off("update", onUpdate)
})
export const deriveEvents = (repository: Repository, opts: {filters: Filter[]; includeDeleted?: boolean}) =>
deriveEventsMapped<TrustedEvent>({
export const deriveEvents = <E extends TrustedEvent>(repository: Repository<E>, opts: {filters: Filter[]; includeDeleted?: boolean}) =>
deriveEventsMapped<E, E>({
...opts,
repository,
eventToItem: identity,
itemToEvent: identity,
})
export const deriveEvent = (repository: Repository, idOrAddress: string) =>
export const deriveEvent = <E extends TrustedEvent>(repository: Repository<E>, idOrAddress: string) =>
derived(
deriveEvents(repository, {
filters: getIdFilters([idOrAddress]),
@@ -187,7 +187,7 @@ export const deriveEvent = (repository: Repository, idOrAddress: string) =>
first
)
export const deriveIsDeletedByAddress = (repository: Repository, event: TrustedEvent) =>
export const deriveIsDeletedByAddress = <E extends TrustedEvent>(repository: Repository<E>, event: E) =>
custom<boolean>(setter => {
setter(repository.isDeletedByAddress(event))