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class Collection {
  coll;
  constructor(coll) {
    this.coll = coll;
  }

  map(fn) {
    return new MapCollection(this, fn);
  }

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type ResizeObserverBoxOptions = "border-box" | "content-box" | "device-pixel-content-box";

interface ResizeObserverOptions {
    box?: ResizeObserverBoxOptions;
}

interface ResizeObservation {
    readonly lastReportedSizes: ReadonlyArray<ResizeObserverSize>;
    readonly observedBox: ResizeObserverBoxOptions;
    readonly target: Element;

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function curry<T extends unknown[], U extends unknown[], V>(
  f: (...ts: [...T, ...U]) => V,
  ...a: T
): (...b: U) => V {
  return (...b) => f(...a, ...b);
}
const input = (a: number, b: string, c: boolean, d: symbol) =>
  [a, b, c, d] as const;

curry(input, 1, "123", true, Symbol())();

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type AllElements =  {
  'a': HTMLAnchorElement;
  'div': HTMLDivElement;
  'span': HTMLSpanElement;
  'ul': HTMLUListElement; 
  'title': HTMLTitleElement;
  'textarea': HTMLTextAreaElement;
  'template': HTMLTemplateElement;
  'tfoot': HTMLTableSectionElement;
  'thead': HTMLTableSectionElement;

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/**
 * @typedef {Object} Article
 * @property {string} title
 * @property {number} price
 * @property {number} vat
 * @property {number} stock
 * @property {string} description
 */
/** @type {Article} */
let article;

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<input type="color" />

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EgyBAJ

A Pen by Stefan Baumgartner on CodePen.

License.

ddprrt

Demo for today

A Pen by Stefan Baumgartner on CodePen.

License.

ddprrt

/**
 * Bluebird allows us to promisify existing Node.js
 * technologies. So fs.writeFile and fs.readFile
 * are usable with Promises.
 * 
 * `fetch` fetches Ressources. This code fetches
 * jQuery, and saves the responses body in a file
 **/

var gulp = require('gulp');

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var gulp = require('gulp');
var source = require('vinyl-source-stream');
var request = require('request');
var merge = require('merge2');
var concat = require('gulp-concat');
var buffer = require('gulp-buffer');

/** 
 * 1. We request the latest jQuery version from the jQuery CDN. The
 *    request package allows for streaming. What we get in return