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const flatten = xs => {
  let next = (acc, xs) => xs.reduce((x, y) => Array.isArray(y)
   ? next(x, y)
   : (x[x.length] = y, x)
   , acc);

  return next([], xs);
}

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// Observable is an Union Type, with the following variants
const Empty   = () => ['EMPTY']
const Cons    = (head, tail) => ['CONS', head, tail]
const Future  = promise => ['FUTURE', promise]

// race between 2 promises; each promise will resolve to a lazy value
const lazyRace = (p1, p2) => Promise.race([p1,p2]).then(lazy => lazy())

// function composition
const compose = (...fns) => (arg) => fns.reduceRight((res, f) => f(res), arg)

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function throttle(fn, ms) {
    var last = (new Date()).getTime();
    return (function() {
        var now = (new Date()).getTime();
        if (now - last > ms) {
            last = now;
            fn.apply(null, arguments);
        }
    });
}

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Iterators = (function() {
    var each, map, filter, reduce, toArray, toObject;
    
    function _map(iter, f) {
        return {
            hasNext: iter.hasNext,
            next: function() { return f(iter.next()); }
        };
    }
    

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function throttle(fn, wait) {
  var time = Date.now();
  return function() {
    if ((time + wait - Date.now()) < 0) {
      fn();
      time = Date.now();
    }
  }
}

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function scrollIt(element, duration = 200, easing = 'linear', callback) {
  // define timing functions
  const easings = {
    linear(t) {
      return t;
    },
    easeInQuad(t) {
      return t * t;
    },
    easeOutQuad(t) {

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const postcss   = require('postcss');
const fs        = require('fs');
const __isDEV__ = false;

const plugin = postcss.plugin('postcss-cssmodules-normalize', function (opts={}) {

    return function (css, result) {

        var selMap = new Map();

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API	Status Codes
[Twitter][tw]	200, 304, 400, 401, 403, 404, 406, 410, 420, 422, 429, 500, 502, 503, 504
[Stripe][stripe]	200, 400, 401, 402, 404, 429, 500, 502, 503, 504
[Github][gh]	200, 400, 422, 301, 302, 304, 307, 401, 403
[Pagerduty][pd]	200, 201, 204, 400, 401, 403, 404, 408, 500
[NewRelic Plugins][nr]	200, 400, 403, 404, 405, 413, 500, 502, 503, 503
[Etsy][etsy]	200, 201, 400, 403, 404, 500, 503
[Dropbox][db]	200, 400, 401, 403, 404, 405, 429, 503, 507

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function run(makeGenerator) {
  return function() {
    var generator = makeGenerator.apply(this, arguments);
    var handle = function(p) {
      if (p.done) return p.value;
      return p.value.then(function(v) {
        return handle(generator.next(v));
      });
    };
    return handle(generator.next());

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/*\
title: $:/plugins/sukima/dombuilder/dombuilder.js
type: application/javascript
module-type: library

Micro DSL for DOM creation and stringification.

\*/

/**