garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

nax3t

function _confidence(ups, downs) {
	var n = ups + downs;

	if(n === 0) {
		return 0;
	}

	var z = 1.281551565545;
	var p = parseFloat(ups) / n;
	var left = p + 1 / (2 * n) * z * z;

aulisius

const Compose = ({ children = () => null, ...chain }) => {
  const composedFn = Object.entries(chain).reduce(
    (acc, [renderProp, renderFn]) => props =>
      renderFn(value => acc({ ...props, [renderProp]: value })),
    children
  );
  return composedFn();
};

ebidel

Moved to https://github.com/ebidel/puppeteer-examples

trueadm

// I'm suggesting we add a new "adopt X from <Y />" syntax to the JSX language
// it would de-sugar to render prop children, but look and read better than
// what we currently have. For example:

// 1.
// this sugar
function MyComponent(props) {
  adopt foo from <Bar />;
  return <div>{foo}</div>;
}

TheLarkInn

const puppetteer = require("puppeteer");

/**
 * @param {string} pageUrl The URL that you want to gather coverage data for
 */
const unusedCode = async pageUrl => {
  const browser = await puppetteer.launch();
  console.log("browser launched");
  const page = await browser.newPage();
  console.log("new page created");

mattdesl

About

Interpolating between things using lerp.

function lerp (start, end, t) {
  return start * (1 - t) + end * t;
}

etaletai13

Package.json

caution do not use package.json for the folder name if you want to clone this project to your machine - it will break yarn (An unexpected error occurred: "EISDIR: illegal operation on a directory, read".).

Original version of this document copied from yarnpkg.

See also npm documentation, std-pkg, clean-publish, package-json-validator, cosmiconfig, rc (as an opponent approach to cosmiconfig).

ebidel

/**
 * Copyright 2018 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

aulisius

function MaybeN(value) {
  if (value.__type__ === "maybe") {
    return value;
  }

  const isEmpty = () => value === undefined || value === null;

  let internalMaybe = {};

  internalMaybe = {