JamieMason

List all assignees of a GitHub Milestone

1. Visit the milestone at eg. https://github.com/USER/REPO/milestone/1
2. Run this in your console

   [...document.querySelectorAll('.from-avatar')].map(el => el.getAttribute('alt'))

3. An array of GitHub usernames will be logged.

JamieMason

List all peerDependencies for packages in a Lerna Monorepo

System Requirements

brew install jq
npm install -g glob-exec

Usage

JamieMason

const childProcess = require('child_process');
const fs = require('fs');
const path = require('path');
const glob = require('glob');

const filePaths = glob
  .sync('package.json')
  .concat(glob.sync('packages/*/package.json'))
  .map(filePath => path.resolve(process.cwd(), filePath));

JamieMason

const exec = require('child_process').exec;

const sortBy = (key, reverse) => {
  const moveSmaller = reverse ? 1 : -1;
  const moveLarger = reverse ? -1 : 1;
  return (a, b) => {
    if (a[key] < b[key]) {
      return moveSmaller;
    }
    if (a[key] > b[key]) {

JamieMason

function Maybe(x) {
  if (this instanceof Maybe === false) {
    return new Maybe(x);
  }
  this.value = x;
}

Maybe.prototype.map = fn => (this.value == null ? this : new Maybe(fn(this.value)));

function Either(left, right) {

JamieMason

import chalk from 'chalk';

export const info = message => console.log(chalk.blue('i %s'), message);

export const warning = message => console.log(chalk.yellow('! %s'), message);

export const error = message => err =>
  console.log(chalk.red('! %s\n\n! %s'), message, String(err.stack).replace(/^/gm, '    '));

export const verbose =

JamieMason

code --install-extension akamud.vscode-caniuse && \
code --install-extension andys8.jest-snippets && \
code --install-extension auiworks.amvim && \
code --install-extension bibhasdn.unique-lines && \
code --install-extension christian-kohler.npm-intellisense && \
code --install-extension cssho.vscode-svgviewer && \
code --install-extension dbaeumer.vscode-eslint && \
code --install-extension dzannotti.vscode-babel-coloring && \
code --install-extension eamodio.gitlens && \
code --install-extension eg2.tslint && \

JamieMason

ES6 Partial Application in 3 Lines

const pApply = (fn, ...cache) => (...args) => {
  const all = cache.concat(args);
  return all.length >= fn.length ? fn(...all) : pApply(fn, ...all);
};

Example

JamieMason

/* 
 * turn this into a bookmarklet using https://mrcoles.com/bookmarklet/
*/
(function() {
  var colors = {
    'data-content-id': '#cddc39',
    'data-test-id': '#4dd0e1',
    default: '#fff176'
  };
  function showAttribute(attrName) {

JamieMason

Parse a URL using an <a> Element

const parseUrl = url => {
  const a = document.createElement('a');
  a.href = url;
  return {
    hash: a.hash,
    host: a.host,
 hostname: a.hostname,