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import { DependencyList, useContext, useEffect, useState } from 'https://esm.sh/react'import { RouterContext } from './context.ts'import { AsyncUseDenoError } from './error.ts'import events from './events.ts'
export function useRouter() {    return useContext(RouterContext)}
export function useDeno<T = any>(callback: () => (T | Promise<T>), browser?: boolean, deps?: DependencyList) {    const id = arguments[3] // generated by compiler    const { pathname, query } = useRouter()    const [data, setDate] = useState<T>(() => {        const global = window as any        const { _useDenoAsyncData: asyncData } = global        const useDenoUrl = `useDeno://${pathname}?${query.toString()}`        const key = `${useDenoUrl}#${id}`        if (asyncData && key in asyncData) {            return asyncData[key]        } else if (typeof Deno !== 'undefined' && Deno.version.deno) {            const ret = callback()            if (ret instanceof Promise) {                events.emit(useDenoUrl, id, ret.then(data => {                    if (asyncData) {                        asyncData[key] = data                    }                    events.emit(useDenoUrl, id, data)                }), true)                throw new AsyncUseDenoError('async useDeno')            } else {                if (asyncData) {                    asyncData[key] = ret                }                events.emit(useDenoUrl, id, ret)                return ret            }        }        return global[key] || null    })
    useEffect(() => {        if (browser) {            const ret = callback()            if (ret instanceof Promise) {                ret.then(setDate)            } else {                setDate(ret)            }        }    }, deps)
    return data}