Jon Staab
32 lines
782 B
TypeScript
32 lines
782 B
TypeScript
import {inc, throttle} from "@welshman/lib"
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import {custom} from "@welshman/store"
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import {repository} from "./core.js"
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export type Topic = {
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name: string
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count: number
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}
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export const topics = custom<Topic[]>(setter => {
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const getTopics = () => {
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const topics = new Map<string, number>()
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for (const tagString of repository.eventsByTag.keys()) {
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if (tagString.startsWith("t:")) {
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const topic = tagString.slice(2).toLowerCase()
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topics.set(topic, inc(topics.get(topic)))
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}
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}
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return Array.from(topics.entries()).map(([name, count]) => ({name, count}))
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}
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setter(getTopics())
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const onUpdate = throttle(3000, () => setter(getTopics()))
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repository.on("update", onUpdate)
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return () => repository.off("update", onUpdate)
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})
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