fronterior

export function* dfs<T>(root: T) {
  const stack: T[] = [root];
  let target: T|undefined;
  
  while (target = stack.shift()) {
    const cb: DFSNext<T> = yield target;
    stack.unshift(...cb?.(target) ?? []);
  }
}

fronterior

import { useEffect, useRef } from "react";

const useDragHook = <T extends HTMLElement>(
  {
    down,
    move,
    up,
  }: {
    down?(ev: PointerEvent, extra: { ox: number; oy: number }): void;
    move?(

fronterior

const groupBy = <T, K extends keyof any>(f: (p: T) => K, arr: T[]) => arr.reduce((acc, val) => {
  const key = f(val);
  acc[key]?.push(val) ?? (acc[key] = [val]);
  return acc;
}, {} as Record<K, T[]>);

fronterior

const h = (t, o) => Object.assign(document.createElement(t), o);
const c = h('canvas', {width: 400, height: 300, style: 'background: black;'});
const ctx = c.getContext('2d');
document.body.appendChild(c);
const s = new Set();
requestAnimationFrame(function draw(time) {
  s.forEach(f => f(time));
  requestAnimationFrame(draw);
});

fronterior

const {execSync} = require('child_process');

const COMMAND = 'DIR';
const cp949Decoder = new TextDecoder('windows-949');
const bytes = new Uint8Array(execSync(COMMAND));

console.log(cp949Decoder.decode(bytes));

// https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder
// https://developer.mozilla.org/en-US/docs/Web/API/Encoding_API/Encodings

fronterior

bracketParse = str => {
  let cursor = 0;
  let depth = 1;
  const stack = [];
  const subStack = [];

  while (cursor < str.length) {
    const si = str.indexOf('(', cursor);
    const nsi = str.indexOf('(', si + 1);
    const ei = str.indexOf(')', cursor);

fronterior

'use strict';

var utils = require('axios/lib/utils');
var settle = require('axios/lib/core/settle');
var buildFullPath = require('axios/lib/core/buildFullPath');
var buildURL = require('axios/lib/helpers/buildURL');
var http = require('http');
var https = require('https');
var httpFollow = require('follow-redirects').http;
var httpsFollow = require('follow-redirects').https;