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refactor(Cmdk): support loading results externally
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| import { useEffect, useMemo, useRef } from "react"; | ||
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| import debounce from "lodash.debounce"; | ||
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| import { useUnmount } from "./useUnmount"; | ||
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| type DebounceOptions = { | ||
| leading?: boolean; | ||
| maxWait?: number; | ||
| trailing?: boolean; | ||
| }; | ||
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| type ControlFunctions = { | ||
| cancel: () => void; | ||
| flush: () => void; | ||
| isPending: () => boolean; | ||
| }; | ||
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| export type DebouncedState<T extends (...args: any) => ReturnType<T>> = (( | ||
| ...args: Parameters<T> | ||
| ) => ReturnType<T> | undefined) & | ||
| ControlFunctions; | ||
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| export function useDebounceCallback<T extends (...args: any) => ReturnType<T>>( | ||
| func: T, | ||
| delay = 500, | ||
| options: DebounceOptions = {} | ||
| ): DebouncedState<T> { | ||
| const debouncedFunc = useRef<ReturnType<typeof debounce>>(); | ||
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| useUnmount(() => { | ||
| if (debouncedFunc.current) { | ||
| debouncedFunc.current.cancel(); | ||
| } | ||
| }); | ||
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| const debounced = useMemo(() => { | ||
| const debouncedFuncInstance = debounce(func, delay, options); | ||
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| const wrappedFunc: DebouncedState<T> = (...args: Parameters<T>) => | ||
| debouncedFuncInstance(...args); | ||
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| wrappedFunc.cancel = () => { | ||
| debouncedFuncInstance.cancel(); | ||
| }; | ||
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| wrappedFunc.isPending = () => !!debouncedFunc.current; | ||
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| wrappedFunc.flush = () => debouncedFuncInstance.flush(); | ||
|
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| return wrappedFunc; | ||
| }, [func, delay, options]); | ||
|
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| // Update the debounced function ref whenever func, wait, or options change | ||
| useEffect(() => { | ||
| debouncedFunc.current = debounce(func, delay, options); | ||
| }, [func, delay, options]); | ||
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| return debounced; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| import { useRef, useState } from "react"; | ||
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| import type { DebouncedState } from "./useDebounceCallback"; | ||
| import { useDebounceCallback } from "./useDebounceCallback"; | ||
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| type UseDebounceValueOptions<T> = { | ||
| equalityFn?: (left: T, right: T) => boolean; | ||
| leading?: boolean; | ||
| maxWait?: number; | ||
| trailing?: boolean; | ||
| }; | ||
|
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| export function useDebounceValue<T>( | ||
| initialValue: T | (() => T), | ||
| delay: number, | ||
| options?: UseDebounceValueOptions<T> | ||
| ): [T, DebouncedState<(value: T) => void>] { | ||
| const eq = options?.equalityFn ?? ((left: T, right: T) => left === right); | ||
| const unwrappedInitialValue = | ||
| initialValue instanceof Function ? initialValue() : initialValue; | ||
| const [debouncedValue, setDebouncedValue] = useState<T>( | ||
| unwrappedInitialValue | ||
| ); | ||
| const previousValueRef = useRef<T | undefined>(unwrappedInitialValue); | ||
|
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| const updateDebouncedValue = useDebounceCallback( | ||
| setDebouncedValue, | ||
| delay, | ||
| options | ||
| ); | ||
|
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| // Update the debounced value if the initial value changes | ||
| if (!eq(previousValueRef.current as T, unwrappedInitialValue)) { | ||
| updateDebouncedValue(unwrappedInitialValue); | ||
| previousValueRef.current = unwrappedInitialValue; | ||
| } | ||
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| return [debouncedValue, updateDebouncedValue]; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| import { useEffect, useRef } from "react"; | ||
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| export function useUnmount(func: () => void) { | ||
| const funcRef = useRef(func); | ||
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| funcRef.current = func; | ||
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| useEffect( | ||
| () => () => { | ||
| funcRef.current(); | ||
| }, | ||
| [] | ||
| ); | ||
| } |