sebinsua

// Replace items in `as` with a matching `id` with the 
// respective item in `bs`, otherwise append new items.
const abs = Object.fromEntries([
  ...as.map(a => [a.id, a]),
  ...bs.map(b => [b.id, b])
]);

// The 'trick' is that if you have two entries with the same id
// (in this case, implying that the value was updated within `bs`)
// then with this method the value of the right-most entry will be used.

sebinsua

function* getOddPalindromesOutwardsFromCentre(str, index) {
  let left = index - 1;
  let right = index + 1;
  let current = str[index];

  yield current;

  while (left >= 0 && right < str.length && str[left] === str[right]) {
    current = `${str[left]}${current}${str[right]}`;
    yield current;

sebinsua

type CreateArray<V extends number, Arr extends unknown[] = []> =
    Arr extends { length: V } ? Arr: CreateArray<V, [...Arr, 1]>;

type Add<A extends number, B extends number> = [...CreateArray<A>, ...CreateArray<B>]['length'];

type V = Add<2, 3>;

type Sub<A extends number, B extends number> = CreateArray<A> extends [...CreateArray<B>, ...infer Els] ? Els['length'] : never;

type V2 = Sub<10, 1>;

sebinsua

import DeepProxy from 'proxy-deep';

export function withDeepPropertyAccessEmitter<T extends object>(
    object: T,
    emit: (info: {
        path: (string | symbol)[];
        target: T;
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        value: any;
    }) => void

sebinsua

function* unroll(matrix) {
  const height = matrix.length;
  const width = matrix[0].length;
  for (let y = 0; y < height; y++) {
    for (let x = 0; x < width; x++) {
      yield { y, x };
    }
  }
}

sebinsua

function createGenerator(maybeIterable) {
  const isGenerator = (maybeGenerator) =>
    "next" in maybeGenerator &&
    typeof maybeGenerator["next"] === "function" &&
    "throw" in maybeGenerator &&
    typeof maybeGenerator["throw"] === "function" &&
    "return" in maybeGenerator &&
    typeof maybeGenerator["return"] === "function";

  function* generatorFrom(maybeIterable) {

sebinsua

import {
  useCallback,
  useEffect,
  useMemo,
  useReducer,
  useRef,
  useState
} from "react";
import { createPortal } from "react-dom";

sebinsua

import { useState } from "react";

import "./styles.css";

function createGrid(n = 3) {
  return Array(n)
    .fill(() => Array(n).fill(null))
    .map((createRow) => createRow());
}

sebinsua

function defaultCreateKey(args) {
  return JSON.stringify(args);
}

class LruCache {
  constructor(capacity = Infinity) {
    this.capacity = capacity;
    this.cache = new Map();
  }

sebinsua

class SinglyLinkedListNode {
  constructor(value) {
    this.value = value;
    this.tail = null;
  }

  valueOf() {
    return this.value;
  }
}