ehpc

#!/bin/sh
# Calculates a metric of how many `any`'s are there compared to line count for TypeScript codebase (in percents)
# Basically we count all `any` occurences, then count all lines in the codebase, and lastly divide one by another

echo "scale = 4; $(find -name "*.ts?" -not -path "./node_modules/*" | xargs grep -o '\bany\b' | wc -l) * 100 / $(find -name "*.ts?" -not -path "./node_modules/*" | xargs wc -l | tail -1 | awk '{print $1}')" | bc

ehpc

function move(el, distance, duration) {
  let startTime;
  function recur() {
    window.requestAnimationFrame((time) => {
      if (startTime === undefined) {
        startTime = time;
      }
      const elapsed = time - startTime;
      const fraction = elapsed / duration;
      const dx = Math.min(distance, distance * fraction);

ehpc

// Custom promise-based compose
const composeWithPromise = (...args) =>
  R.composeWith((f, val) => {
    if (val && val.then) {
      return val.then(f);
    }
    if (Array.isArray(val) && val.length && val[0] && val[0].then) {
      return Promise.all(val).then(f);
    }
    return f(val);

ehpc

const MongoClient = require('mongodb').MongoClient;

const uri = 'mongodb://localhost:27017/';
const mongoClient = new MongoClient(uri, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
});

(async () => {
  const connection = await mongoClient.connect();

ehpc

function heavyFunc() {
    const limit = Math.pow(10, 8);
    let res = 0;
    for (let i = 1; i < limit; i++) {
        res += Math.atan2(i, i) * Math.random();
    }
    return res;
}

async function heavyFuncWithAsync() {

ehpc

/**
 * Разные асинхронные паттерны в JS, решающие одну и ту же задачу
 */

///////////////// callbacks ///////////////////////////////////
function asyncFunction(callback) {
  setTimeout(callback.bind(this, 42), 100);
}

asyncFunction(console.log.bind(this, 'asyncFunction:'));

ehpc

const readline = require('readline');

const questions = [
  ['Can the fox be recursive?', 'O_o'],
  ['Can readline be non-recursive?', 'Yep']
];

const cmd = readline.createInterface({
  input: process.stdin,
  output: process.stdout

ehpc

const readline = require('readline');

const questions = [
  ['What does the fox say?', 'Yeeeee'],
  ['Will you be coding this weekend?', 'Whaaaatt?!']
];

const cmd = readline.createInterface({
  input: process.stdin,
  output: process.stdout

ehpc

root = true

[*]
indent_style = space
indent_size = 2
tab_width = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

ehpc

let secret = pm.variables.get('secret-key'),
    timestamp = Date.now(),
    query = pm.request.url.query
        .filter(x => !x.disabled && x.key !== 'signature')
        .map(x => {
            if (x.key === 'timestamp') {
                return `${x.key}=${timestamp}`;
            }
            else {
                return `${x.key}=${x.value}`;