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1. useInterval.js useInterval.js

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   function useInterval(callback) {

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     const savedCallback = useRef();

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     useEffect(() => {

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       savedCallback.current = callback;

2. writing mutable object safely writing mutable object safely

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   /**

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    * 

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    * @param o Object to mutate

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    * @param ks array of keys, or string of keys

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    * @param v value to assign

3. enumToArray.ts enumToArray.ts

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   /**

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    * Helper to produce an array of enum values.

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    * @param enumeration Enumeration object.

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    */

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   export function enumToArray<T, G extends keyof T = keyof T>(enumeration: T): T[G][] {

4. while promise with condition while promise with condition

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   export default async function whilePromise(action, condition) {

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     const result = await action();

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     if (condition(result)) {

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       return whilePromise(action, condition);

5. runAllFunction.js runAllFunction.js

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   // https://stackoverflow.com/questions/51403615/spread-syntax-ecmascript

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   const callAll = (...fns) => (...args) => fns.forEach(fn => fn?.(...args))