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/*jslint indent: 2*/
/*global define*/
'use strict';
define([
  'backbone',
  'underscore',
  'backgrid-paginator'
], function(Backbone, _){
  var ISIE = $('html').hasClass('lt-ie9');

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/**
 * var sparkline = new Sparkline([10,20,45,12], 120, 30, '#000', 'red');
 * document.body.appendChild(sprakline.render().canvas);
 */
function Sparkline(data, width, height, lineColor, dotColor) {
  this.canvas = document.createElement('canvas');
  this.canvas.width = width;
  this.canvas.height = height;

  this.lineColor = lineColor;

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function sharedStart(array) {
  var A= array.concat().sort(), 
  a1= A[0], a2= A[A.length-1], L= a1.length, i= 0;
  while(i<L && a1.charAt(i)=== a2.charAt(i)) i++;
  return a1.substring(0, i);
}

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{
  "layers": [
    {
      "name": "canvas",
      "type": "canvas",
      "canvasLayers": [
        {
          "props": {
            "active": {
              "type": "boolean",

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{
  "layers": [
    {
      "active": true,
      "mixBlendMode": "normal",
      "name": "no-signal",
      "opacity": 100,
      "rotateX": 0,
      "rotateY": 0,
      "rotateZ": 0,

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<canvas id="canvas" width="400" height="300"></canvas>

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signals:
  colorA:
    type: hsla
    defaultValue: 1
    input: null
    hue: 180
    saturation: 50
    lightness: 50
    alpha: 100
  beatA:

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signals:
  colorA:
    type: hsla
    defaultValue: '180,50%,50%,1'
    input: null
    hue: 180
    saturation: 50
    lightness: 50
    alpha: 100
  beatA:

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signals:
  colorA:
    type: hsla
    defaultValue: '180,50%,50%,1'
    input: null
    hue: 180
    saturation: 50
    lightness: 50
    alpha: 100
  beatA:

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// can be runned from the Devel execute PHP page
use Drupal\image\Entity\ImageStyle;

$path = 'public://2018-03/26756519_10155441271337695_6783993404862700965_o.jpg';

$thumbnail = ImageStyle::load('article');
dpm($thumbnail->buildUrl($path));
$dest = $thumbnail->buildUri($path);
dpm($dest);
$created = $thumbnail->createDerivative($path, $dest);