vitkarpov

const { callbackify } = require('util');

async function main() {
  await Promise.resolve();
}

callbackify(main)(function(err) {
  if (err) {
    return console.error(err);
  }

vitkarpov

// @see http://2ality.com/2017/05/util-promisify.html

const { promisify } = require('util');

const fs = require('fs');
const readFileAsync = promisify(fs.readFile);

const filePath = process.argv[2];

readFileAsync(filePath, { encoding: 'utf8' })

vitkarpov

const http2 = require('http2');
const fs = require('fs');

const server = http2.createSecureServer({
    key: fs.readFileSync('key.pem'),
    cert: fs.readFileSync('cert.pem')
});

server.on('error', (err) => console.error(err));
server.on('socketError', (err) => console.error(err));

vitkarpov

How do I get into a programming languages development?

I'm a web developer and have been doing JavaScript both on client and server for quite a while. At some point I started to understand that I want to focus on JavaScript as a language and a tool for developers rather than using it as a JavaScript developer.

I'm wondering which theory basis and practical skills should I get if I want, for instance, to end up at V8 JavaScript runtime team?

vitkarpov

/**
 * Возвращает строку длины n состоящую из символов s
 * Имеет логарифмическую сложность.
 *
 * @param   {String} s
 * @returns {String}
 */
function repeat(s, n) {
    let ans = s;
    let len = 1;

vitkarpov

#!/bin/bash
#
# git-svn-diff originally by (http://mojodna.net/2009/02/24/my-work-git-workflow.html)
# modified by mike@mikepearce.net
# modified by aconway@[redacted] - handle diffs that introduce new files
# modified by t.broyer@ltgt.net - fixes diffs that introduce new files
# modified by m@rkj.me - fix sed syntax issue in OS X
#
# Generate an SVN-compatible diff against the tip of the tracking branch

vitkarpov

.my-fancy-input {
	position: relative;
	width: 160px;
	height: 20px;
	border: 1px solid black;
}
.my-fancy-input input {
	position: absolute;
	background: transparent;
	box-sizing: border-box;

vitkarpov

.my-fancy-input {
	font-size: 20px;
	font-family: monospace;
	letter-spacing: 10px;
}

vitkarpov

/**
 * Находит индекс указанного элемента x в массиве arr.
 * Если такого элемента нет, вернет -1.
 * Работает за O(log n).
 * В худшем случае деградирует до O(n), при большом количестве одинаковых элементов.
 * @param   {array<number>} arr
 * @param   {number} x
 * @returns {number}
 */
const search = (function() {

vitkarpov

/**
 * @example
 * // 1
 * jpath('.foo.bar', { foo: { bar: 1 } });
 *
 * // null
 * jpath('.foo.bar.baz', { foo: 2 })
 */
const jpath = (function() {
  function recursiveSearch(fields, source) {