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// new API: reatomAsync automatically cancels the previous request
// and all dependent requests when the new request is triggered

const getList = reatomAsync.from(getListApi).pipe(withDataAtom([]));
const getId = reatomAsync.from(getIdApi).pipe(withAbort());
onUpdate(getId.onFulfilled, (ctx, { data: id }) => getList(ctx, id));

const Component = () => {
  const [list] = useAtom(getList.dataAtom);
  const handleChange = useAction((ctx, e) => getId(ctx, e.currentTarget.value));

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// https://reactjs.org/docs/hooks-faq.html#how-to-read-an-often-changing-value-from-usecallback
// https://github.com/reactjs/rfcs/pull/220#issuecomment-1259938816

import React from 'react';

// Allow to access a fresh closures in the function but returns stable reference during rerenders
export function useCallbackRef<T extends (...args: unknown[]) => unknown>(callback: T): T {
  const ref: React.MutableRefObject<{
    stableFn: T;
    callback: T;

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type LLNode<T = any> = {
  prev: null | LLNode<T>
  value: T
  next: null | LLNode<T>
}

const LLAdd = <T>(prev: LLNode<T>, value: T, next = prev.next) => {
  prev.next = { prev, value, next }
  if (next !== null) next.prev = prev.next
}

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const analyticsAtom = atom((ctx) => {
  const { url } = ctx.spy(routeAtom);
  const { name } = ctx.get(userAtom);
  ctx.schedule(() => logAnalytics("visit_page", url, name));
});

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type MyPromise<T> = Promise<Awaited<T>>

async function call<T extends () => any>(fn: T): MyPromise<ReturnType<T>> {
  return fn()
}

const res = call(() =>
  call(() =>
    call(() =>
      call(() =>

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<>
  <h1 id="login">Login</h1>
  <form aria-describedby="login" onSubmit={handleSubmit}>
    <input type="email" value={email} onChange={handleChangeEmail} />
    <input type="password" value={password} onChange={handleChangePassword} />
    <button type="submit">Submit</button>
  </form>
</>;

// VS

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// inspired by https://doc.rust-lang.org/reference/expressions/block-expr.html

function some() {
  {
    const a = 1;
    const b = 1;
    var x = 1;
  }
  {
    const a = 2;

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Structure

Concepts

workflow - is a common term for user story / business workflow

utils - basic reusable constants, functions and services without knowledge of a workflow

unit testing. tip: use uvu (without CLI)

blocks - basic reusable view components (ui-kit) without knowledge of a workflow

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export type Merge<Intersection> = Intersection extends Fn
  ? Intersection
  : Intersection extends new (...a: any[]) => any
  ? Intersection
  : Intersection extends object
  ? {
      [Key in keyof Intersection]: Intersection[Key]
    }
  : Intersection

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import * as t from 'runtypes'

export const oneMillisecond = 1
export const oneSecond = oneMillisecond * 1000
export const oneMinute = oneSecond * 60
export const oneHour = oneMinute * 60
export const oneDay = oneHour * 24

/** 30 messages per second for all users
 * and one message per second for one user