hmmhmmhm

// ts
const mod = (n: number, m: number) => {
  let r = n % m;
  return Math.floor(r >= 0 ? r : r + m);
};

// js
const mod = (n, m) => {
  let r = n % m;
  return Math.floor(r >= 0 ? r : r + m);

hmmhmmhm

Codewatch is a watch theme that does not collect or store personal information. If you have any related questions, please contact us in the email below. pm2@kakao.com

hmmhmmhm

const url = `/component.js`;
const a = document.createElement("a");
a.href = url;
a.download = url.split("/").pop()!;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);

hmmhmmhm

export interface PackNode {
  w: number
  h: number
  x?: number
  y?: number
  used?: boolean
  right?: PackNode
  down?: PackNode
  fit?: PackNode
}

hmmhmmhm

type FileCallbackType = (
  event:
    | {
        file: File
        thumbnail: string | ArrayBuffer | null
        getFormData: (name: string) => FormData
      }[]
    | void
) => unknown

hmmhmmhm

/**
 * Converts an ArrayBuffer to a String.
 *
 * @param buffer - Buffer to convert.
 * @returns String.
 */
export const arrayBufferToString = (buffer: ArrayBuffer) =>
  String.fromCharCode.apply(null, Array.from(new Uint16Array(buffer)))

/**

hmmhmmhm

import Router from 'next/router'
import { useEffect } from 'react'

export default function StaticRoute() {
  useEffect(() => {
    Router.replace(window.location.pathname, window.location.pathname, {
      shallow: true
    })
  }, [])
  return null

hmmhmmhm

const list = [{ text: "a" }, { text: "b" }, { text: "c" }, { text: "d" }];

// Map & Filter
const i1 = list
  .map((item, index) => (item.text === "c" ? index : null))
  .filter((item) => item !== null)[0]!;

// For
let i2 = 0;
for (const item of list) {

hmmhmmhm

// if you want better performance, use fpe
// https://gist.github.com/hmmhmmhm/89e200e3501b4d155901baee3cae0f74

const rand = (max) => ~~(Math.random() * max)
const items = []

while(items.length === 100){
  const item = rand(100)
  if(!items.includes(item))
    items.push(item)

hmmhmmhm

// ~~(min + Math.random() * max)

// 0 ~ 100
~~(Math.random() * 100)

// 1 ~ 5
~~(1 + Math.random() * 5)