KiaraGrouwstra

// This work is licensed under the Creative Commons Attribution 3.0 United States License. To view
// a copy of this license, visit http://creativecommons.org/licenses/by/3.0/us/ or send a letter
// to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.

// Copyright 2009 John Tantalo <john.tantalo@gmail.com>

(function () {
  // get selection
  var selection = window.getSelection ? window.getSelection() :
    document.getSelection ? document.getSelection() :

KiaraGrouwstra

/*
//Sequentially scrape a given list of URLs with a given minimum delay between fetches
//Usage:

let
    BaseUrl = "http://example.com/?p=",
    Pages = List.Numbers(1, 5),
    Urls = List.Transform(Pages, each BaseUrl & Number.ToText(_))
in
    Web_FetchSequentially(Urls)

KiaraGrouwstra

export const alias = {
  "openapi": "2.0",
  "paths": {
    "/path1": {
      "get": {
        "parameters": [
          {
            "in": "path",
            "name": "my_param",
            "schema": { "$ref": "#/x-MyDefs/person_id" }

KiaraGrouwstra

// using ES6 Proxy to deal with methods of Promise'd objects. works for me in Edge though not Chrome somehow.
let handler = {
  get: (target, prop) => function() {
    if(target instanceof Promise) {
      let args = arguments;
      return target.then((o) => o[prop].apply(o, args));
    } else {
      let value = target[prop];
      return typeof value == 'function' ? value.bind(target) : value;
    }

KiaraGrouwstra

// using ES6 Proxy to let Promises/Observables pretend like they're regular values.

// get the mapping function used for async objects
let getMapper = (target) => target instanceof Promise ? 'then' :
    target instanceof Observable ? 'switchMap' : null;
// ^ fails if the Observable is in a local namespace e.g. Rx.Observable

// bind a value to its object if it's a function
let bindFn = (val, obj) => typeof val == 'function' ? val.bind(obj) : val;

KiaraGrouwstra

// get the CSS snippet needed to give one element the style of another

var R = require('ramda');
var getPx = (str) => /(\d+)\s*px/g.test(str) ? Number(str.replace(/[^\d]/g, '')) : null;
var px2rem = R.curry((base, str) => str.replace(/(\d+)\s*px/g, (match, px) => Number(px)/base + 'rem'));
var base = getPx(getComputedStyle(document.documentElement).fontSize);
var toRem = px2rem(base);
var patchStyle = (fromEl, toEl, asRem = false) => {
  let [styles, stylesTo] = [fromEl, toEl].map(getComputedStyle);
  let css = R.pipe(

KiaraGrouwstra

let R = require('ramda');

const up = (s) => s[0].toUpperCase() + s.substring(1).replace(/\-(\w)/, (match, letter) => letter.toUpperCase());

// JSON.stringify(crudOpenApiEndpoints({ single: 'app' }))
function crudOpenApiEndpoints ({ single, plural = single + 's', id = 'id', type = 'integer' }) {
  let $ref = `#/definitions/${up(single)}`;
  let resp = (schema) => ({ description: 'OK', schema });
  let responses = { 204: resp({}) }; // empty non-GET response
  let idPar = { name: id, in: 'path', required: true, type };

KiaraGrouwstra

// install repos: https://github.com/jb55/javascript-iterators/wiki/Registry

const iterator = R.map({
  map: require('map-iterator'),
  filter: require('filter-iterator'),
  groupBy: require('groupby-iterator'),
  sortBy: require('sortby-iterator'),
  concat: require('concat-iterator'),
  skip: require('skip-iterator'),
  take: require('take-iterator'),

KiaraGrouwstra

var R = require('ramda');

var deps = R.pipe(
  R.match(/Depends: ([\w-]+)/g),
  R.map(R.replace('Depends: ', '')),
  R.join(' '),
  R.concat('sudo apt-get install '),
);

/*

KiaraGrouwstra

// run on the page of a Youtube playlist to obtain the total playlist time in hours

Array.from(document.getElementsByClassName('ytd-thumbnail-overlay-time-status-renderer'))
.map(x=> {
  var nums = x.innerText.split(':').map(Number);
  var [h, m, s] = nums[2] !== undefined ? nums : [0, ...nums];
  return 3600*h+60*m + s;
})
.reduce((a,b)=>a+b) / 3600