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if(!__webpack_require__.o(exports, name)) exports[name] = getter };\n\n \t// define __esModule on exports\n \t__webpack_require__.r = function(exports) { exports.__esModule = true }\n\n \t// create a fake namespace object\n \t// mode & 1: value is a module id, require it\n \t// mode & 2: merge all properties of value into the ns\n \t// mode & 4: return value when already ns object\n \t// mode & 8|1: behave like require\n \t__webpack_require__.t = function(value, mode) {\n \t\tif(mode & 1) value = __webpack_require__(value);\n \t\tif(mode & 8) return value;\n \t\tif((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;\n \t\tvar ns = {};\n \t\t__webpack_require__.r(ns);\n \t\tns['default'] = value;\n \t\tif(mode & 2 && typeof value != 'string') for(var key in value) (function (key) { __webpack_require__.d(ns, key, function() { return value[key]; }) }(key));\n \t\treturn ns;\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 4);\n","function _interopRequireDefault(e) {\n  return e && e.__esModule ? e : {\n    \"default\": e\n  };\n}\nmodule.exports = _interopRequireDefault, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","export default function map (fn, functor) {\n  var idx = 0\n  var len = functor.length\n  var result = Array(len)\n  while (idx < len) {\n    result[idx] = fn(functor[idx])\n    idx += 1\n  }\n  return result\n}\n","export default function noop () {\n  /* do nothing */\n}\n","/* global __PACKAGE__, __VERSION__, __ENVIRONMENT__ */\nimport debug from 'debug'\n\nexport default function logger (moduleName) {\n  const packagePrefix = [__PACKAGE__, `${__VERSION__}-${__ENVIRONMENT__}`].join('@')\n  return debug([packagePrefix, moduleName].join(':'))\n}\n","/* global __NAMESPACE__ */\nimport map from './helper/map'\nimport nodeListToArray from './helper/node-list-to-array'\nimport { fnSendClickEvent, fnSendRenderedEvent, fnSendViewableEvent } from './handle-events'\nimport logger from './helper/logger'\nimport uuid from './helper/uuid'\n\nconst ATTR_NAME = 'data-ad-events'\nconst ATTR_UUID = 'data-ad-uuid'\n\nconst log = logger('global')\n\nfunction applyEventHandlerToElement (adElement) {\n  log('applyEventHandlerToElement: start')\n  try {\n    const adEvents = JSON.parse(adElement.getAttribute(ATTR_NAME))\n    adElement.removeAttribute(ATTR_NAME)\n\n    const currentEventId = uuid()\n    adElement.setAttribute(ATTR_UUID, currentEventId)\n\n    const logFn = logger(adElement.getAttribute(ATTR_UUID))\n\n    fnSendRenderedEvent(adElement, adEvents, logFn)\n    fnSendViewableEvent(adElement, adEvents, logFn)\n    fnSendClickEvent(adElement, adEvents, logFn)\n  } catch (ignore) {\n  }\n  log('applyEventHandlerToElement: end')\n}\n\nfunction findAdElements (tagName = 'li', attrName = ATTR_NAME) {\n  return nodeListToArray(document.querySelectorAll(tagName + '[' + attrName + ']'))\n}\n\nfunction boot () {\n  log('boot: start')\n  map(applyEventHandlerToElement, findAdElements())\n  log('boot: end')\n}\n\nboot.findAdElements = findAdElements\nboot.applyEventHandlerToElement = applyEventHandlerToElement\n\nfunction installEventListener () {\n// Global Event Listener 설치\n  if (!boot.isEventListenerInstalled) {\n    log('install onload event listener')\n    boot.isEventListenerInstalled = true\n    window.addEventListener('load', function _bootstrap () {\n      log('fired onload event listener')\n      window.removeEventListener('load', _bootstrap)\n      boot()\n    })\n  }\n}\n\nfunction installApiEndpoint () {\n  window[__NAMESPACE__] = window[__NAMESPACE__] || boot\n}\n\ninstallEventListener()\ninstallApiEndpoint()\n","export default function nodeListToArray (nodes) {\n  var array = null\n  try {\n    array = Array.prototype.slice.call(nodes, 0) // non-IE and IE9+\n  } catch (ex) {\n    array = []\n    for (var i = 0, len = nodes.length; i < len; i += 1) {\n      array.push(nodes[i])\n    }\n  }\n  return array\n}\n","import noop from './helper/noop'\nimport map from './helper/map'\nimport sendBeacon from './helper/send-beacon'\nimport notifyError from './helper/notify-error'\nimport createViewableInstance from './create-viewable-instance'\n\nfunction handleEvents (eventName) {\n  return function (events, logFn) {\n    events = events || []\n    logFn = logFn || noop\n    logFn(eventName + ': filtering beacon from Events')\n\n    return Promise.all(\n      map(function (e) {\n        if (e.type === eventName) {\n          logFn(`${eventName}: getting urls from them`)\n\n          var v = e.url\n\n          logFn(eventName + ': sending beacon to ' + v)\n\n          return sendBeacon(v)\n            .then(function (beacon) {\n              logFn(eventName + ': beacon ' + beacon.src + ' is just sent')\n            })\n            .catch(notifyError)\n        }\n      }, events)\n    )\n  }\n}\n\nfunction addRenderEventListener (fn) {\n  return function (targetElement, adEvents, logFn) {\n    if (targetElement.getClientRects().length > 0) {\n      fn(adEvents, logFn)\n    }\n  }\n}\n\nfunction addViewableEventListener (fn) {\n  return function (targetElement, adEvents, logFn) {\n    var viewableInstanceFactory = createViewableInstance(targetElement)\n\n    targetElement._viewableInstance = viewableInstanceFactory(function (containerNode) {\n      fn(adEvents, logFn)\n    })\n\n    targetElement._viewableInstance.start()\n  }\n}\n\nfunction addClickEventListener (fn) {\n  return function (targetElement, adEvents, logFn) {\n    targetElement && targetElement.addEventListener('click', function () {\n      fn(adEvents, logFn)\n    }, true)\n  }\n}\n\nconst fnSendRenderedEvent = addRenderEventListener(handleEvents('rendered'))\nconst fnSendViewableEvent = addViewableEventListener(handleEvents('viewable'))\nconst fnSendClickEvent = addClickEventListener(handleEvents('click'))\n\nexport {\n  fnSendRenderedEvent,\n  fnSendViewableEvent,\n  fnSendClickEvent\n}\n","/* global Image */\n\nfunction sendBeacon (url) {\n  return new Promise((resolve, reject) => {\n    var beacon = new Image()\n\n    beacon.onerror = (ignore) => reject(sendBeacon.defaultReject(url))\n    beacon.onload = (ignore) => resolve(sendBeacon.defaultResolve(url))\n\n    beacon.src = url\n  })\n}\n\nsendBeacon.defaultResolve = (url) => ({ src: url })\n\nsendBeacon.defaultReject = (url) => new Error('Beacon cannot sent', { url })\n\nexport default sendBeacon\n","import logger from './logger'\n\nconst logFn = logger('notify-error')\n\nexport default function notifyError (err) {\n  logFn('----- ERROR LOG START -----')\n  logFn(err)\n  logFn('----- ERROR LOG END -----')\n}\n","\"use strict\";\n\nfunction _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\nexports.log = log;\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\n/**\n * Colors.\n */\n\nexports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n// eslint-disable-next-line complexity\n\nfunction useColors() {\n  // NB: In an Electron preload script, document will be defined but not fully\n  // initialized. Since we know we're in Chrome, we'll just detect this case\n  // explicitly\n  if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n    return true;\n  } // Internet Explorer and Edge do not support colors.\n\n\n  if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n    return false;\n  } // Is webkit? http://stackoverflow.com/a/16459606/376773\n  // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\n\n  return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance || // Is firebug? http://stackoverflow.com/a/398120/376773\n  typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) || // Is firefox >= v31?\n  // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31 || // Double check webkit in userAgent just in case we are in a worker\n  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/);\n}\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\n\nfunction formatArgs(args) {\n  args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);\n\n  if (!this.useColors) {\n    return;\n  }\n\n  var c = 'color: ' + this.color;\n  args.splice(1, 0, c, 'color: inherit'); // The final \"%c\" is somewhat tricky, because there could be other\n  // arguments passed either before or after the %c, so we need to\n  // figure out the correct index to insert the CSS into\n\n  var index = 0;\n  var lastC = 0;\n  args[0].replace(/%[a-zA-Z%]/g, function (match) {\n    if (match === '%%') {\n      return;\n    }\n\n    index++;\n\n    if (match === '%c') {\n      // We only are interested in the *last* %c\n      // (the user may have provided their own)\n      lastC = index;\n    }\n  });\n  args.splice(lastC, 0, c);\n}\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\n\nfunction log() {\n  var _console;\n\n  // This hackery is required for IE8/9, where\n  // the `console.log` function doesn't have 'apply'\n  return (typeof console === \"undefined\" ? \"undefined\" : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);\n}\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\n\nfunction save(namespaces) {\n  try {\n    if (namespaces) {\n      exports.storage.setItem('debug', namespaces);\n    } else {\n      exports.storage.removeItem('debug');\n    }\n  } catch (error) {// Swallow\n    // XXX (@Qix-) should we be logging these?\n  }\n}\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\n\nfunction load() {\n  var r;\n\n  try {\n    r = exports.storage.getItem('debug');\n  } catch (error) {} // Swallow\n  // XXX (@Qix-) should we be logging these?\n  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\n\n  if (!r && typeof process !== 'undefined' && 'env' in process) {\n    r = process.env.DEBUG;\n  }\n\n  return r;\n}\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\n\nfunction localstorage() {\n  try {\n    // TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n    // The Browser also has localStorage in the global context.\n    return localStorage;\n  } catch (error) {// Swallow\n    // XXX (@Qix-) should we be logging these?\n  }\n}\n\nmodule.exports = require('./common')(exports);\nvar formatters = module.exports.formatters;\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n  try {\n    return JSON.stringify(v);\n  } catch (error) {\n    return '[UnexpectedJSONParseError]: ' + error.message;\n  }\n};\n\n","\"use strict\";\n\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\nfunction setup(env) {\n  createDebug.debug = createDebug;\n  createDebug.default = createDebug;\n  createDebug.coerce = coerce;\n  createDebug.disable = disable;\n  createDebug.enable = enable;\n  createDebug.enabled = enabled;\n  createDebug.humanize = require('ms');\n  Object.keys(env).forEach(function (key) {\n    createDebug[key] = env[key];\n  });\n  /**\n  * Active `debug` instances.\n  */\n\n  createDebug.instances = [];\n  /**\n  * The currently active debug mode names, and names to skip.\n  */\n\n  createDebug.names = [];\n  createDebug.skips = [];\n  /**\n  * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n  *\n  * Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n  */\n\n  createDebug.formatters = {};\n  /**\n  * Selects a color for a debug namespace\n  * @param {String} namespace The namespace string for the for the debug instance to be colored\n  * @return {Number|String} An ANSI color code for the given namespace\n  * @api private\n  */\n\n  function selectColor(namespace) {\n    var hash = 0;\n\n    for (var i = 0; i < namespace.length; i++) {\n      hash = (hash << 5) - hash + namespace.charCodeAt(i);\n      hash |= 0; // Convert to 32bit integer\n    }\n\n    return createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n  }\n\n  createDebug.selectColor = selectColor;\n  /**\n  * Create a debugger with the given `namespace`.\n  *\n  * @param {String} namespace\n  * @return {Function}\n  * @api public\n  */\n\n  function createDebug(namespace) {\n    var prevTime;\n\n    function debug() {\n      // Disabled?\n      if (!debug.enabled) {\n        return;\n      }\n\n      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n        args[_key] = arguments[_key];\n      }\n\n      var self = debug; // Set `diff` timestamp\n\n      var curr = Number(new Date());\n      var ms = curr - (prevTime || curr);\n      self.diff = ms;\n      self.prev = prevTime;\n      self.curr = curr;\n      prevTime = curr;\n      args[0] = createDebug.coerce(args[0]);\n\n      if (typeof args[0] !== 'string') {\n        // Anything else let's inspect with %O\n        args.unshift('%O');\n      } // Apply any `formatters` transformations\n\n\n      var index = 0;\n      args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {\n        // If we encounter an escaped % then don't increase the array index\n        if (match === '%%') {\n          return match;\n        }\n\n        index++;\n        var formatter = createDebug.formatters[format];\n\n        if (typeof formatter === 'function') {\n          var val = args[index];\n          match = formatter.call(self, val); // Now we need to remove `args[index]` since it's inlined in the `format`\n\n          args.splice(index, 1);\n          index--;\n        }\n\n        return match;\n      }); // Apply env-specific formatting (colors, etc.)\n\n      createDebug.formatArgs.call(self, args);\n      var logFn = self.log || createDebug.log;\n      logFn.apply(self, args);\n    }\n\n    debug.namespace = namespace;\n    debug.enabled = createDebug.enabled(namespace);\n    debug.useColors = createDebug.useColors();\n    debug.color = selectColor(namespace);\n    debug.destroy = destroy;\n    debug.extend = extend; // Debug.formatArgs = formatArgs;\n    // debug.rawLog = rawLog;\n    // env-specific initialization logic for debug instances\n\n    if (typeof createDebug.init === 'function') {\n      createDebug.init(debug);\n    }\n\n    createDebug.instances.push(debug);\n    return debug;\n  }\n\n  function destroy() {\n    var index = createDebug.instances.indexOf(this);\n\n    if (index !== -1) {\n      createDebug.instances.splice(index, 1);\n      return true;\n    }\n\n    return false;\n  }\n\n  function extend(namespace, delimiter) {\n    return createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n  }\n  /**\n  * Enables a debug mode by namespaces. This can include modes\n  * separated by a colon and wildcards.\n  *\n  * @param {String} namespaces\n  * @api public\n  */\n\n\n  function enable(namespaces) {\n    createDebug.save(namespaces);\n    createDebug.names = [];\n    createDebug.skips = [];\n    var i;\n    var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\\s,]+/);\n    var len = split.length;\n\n    for (i = 0; i < len; i++) {\n      if (!split[i]) {\n        // ignore empty strings\n        continue;\n      }\n\n      namespaces = split[i].replace(/\\*/g, '.*?');\n\n      if (namespaces[0] === '-') {\n        createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n      } else {\n        createDebug.names.push(new RegExp('^' + namespaces + '$'));\n      }\n    }\n\n    for (i = 0; i < createDebug.instances.length; i++) {\n      var instance = createDebug.instances[i];\n      instance.enabled = createDebug.enabled(instance.namespace);\n    }\n  }\n  /**\n  * Disable debug output.\n  *\n  * @api public\n  */\n\n\n  function disable() {\n    createDebug.enable('');\n  }\n  /**\n  * Returns true if the given mode name is enabled, false otherwise.\n  *\n  * @param {String} name\n  * @return {Boolean}\n  * @api public\n  */\n\n\n  function enabled(name) {\n    if (name[name.length - 1] === '*') {\n      return true;\n    }\n\n    var i;\n    var len;\n\n    for (i = 0, len = createDebug.skips.length; i < len; i++) {\n      if (createDebug.skips[i].test(name)) {\n        return false;\n      }\n    }\n\n    for (i = 0, len = createDebug.names.length; i < len; i++) {\n      if (createDebug.names[i].test(name)) {\n        return true;\n      }\n    }\n\n    return false;\n  }\n  /**\n  * Coerce `val`.\n  *\n  * @param {Mixed} val\n  * @return {Mixed}\n  * @api private\n  */\n\n\n  function coerce(val) {\n    if (val instanceof Error) {\n      return val.stack || val.message;\n    }\n\n    return val;\n  }\n\n  createDebug.enable(createDebug.load());\n  return createDebug;\n}\n\nmodule.exports = setup;\n\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function (val, options) {\n  options = options || {};\n  var type = typeof val;\n  if (type === 'string' && val.length > 0) {\n    return parse(val);\n  } else if (type === 'number' && isFinite(val)) {\n    return options.long ? fmtLong(val) : fmtShort(val);\n  }\n  throw new Error(\n    'val is not a non-empty string or a valid number. val=' +\n      JSON.stringify(val)\n  );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str);\n  if (str.length > 100) {\n    return;\n  }\n  var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n    str\n  );\n  if (!match) {\n    return;\n  }\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'weeks':\n    case 'week':\n    case 'w':\n      return n * w;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n    default:\n      return undefined;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return Math.round(ms / d) + 'd';\n  }\n  if (msAbs >= h) {\n    return Math.round(ms / h) + 'h';\n  }\n  if (msAbs >= m) {\n    return Math.round(ms / m) + 'm';\n  }\n  if (msAbs >= s) {\n    return Math.round(ms / s) + 's';\n  }\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return plural(ms, msAbs, d, 'day');\n  }\n  if (msAbs >= h) {\n    return plural(ms, msAbs, h, 'hour');\n  }\n  if (msAbs >= m) {\n    return plural(ms, msAbs, m, 'minute');\n  }\n  if (msAbs >= s) {\n    return plural(ms, msAbs, s, 'second');\n  }\n  return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n  var isPlural = msAbs >= n * 1.5;\n  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","import noop from './helper/noop'\n\nexport default function createViewableInstance (element, {\n  VIEWABLE_CONTINUOUS_TIME = 1000,\n  VIEWABLE_THRESHOLD = 50\n} = {}) {\n  return function (onLoadCallback) {\n    onLoadCallback = onLoadCallback || noop\n\n    const canUseIntersectionObserver =\n      'IntersectionObserver' in window &&\n      'IntersectionObserverEntry' in window\n\n    const threshold = VIEWABLE_THRESHOLD / 100\n    const viewableInstance = {\n      _instance: null\n    }\n\n    if (canUseIntersectionObserver) {\n      let isFiredViewableEvent = false\n      let visibleTimeout = null\n\n      const _isViewable = (bcr, icr) => ((icr.width * icr.height) / (bcr.width * bcr.height) >= threshold)\n\n      const _visibleTimerCallback = function (element, observer) {\n        _processChanges(observer.takeRecords(), observer)\n\n        if ('isVisible' in element && element.isVisible) {\n          delete element.isVisible\n          if (!isFiredViewableEvent) {\n            isFiredViewableEvent = true\n            onLoadCallback(element)\n            _releaseTimer(element)\n            _releaseInstance(element, observer)\n          }\n        }\n      }\n\n      const _releaseTimer = function (element) {\n        if ('isVisible' in element) {\n          delete element.isVisible\n        }\n\n        if (visibleTimeout) {\n          clearTimeout(visibleTimeout)\n          visibleTimeout = null\n        }\n      }\n\n      const _releaseInstance = function (element, observer) {\n        observer.unobserve(element)\n        observer.disconnect()\n      }\n\n      const _processChanges = function (changes, observer) {\n        changes.forEach(function (changeRecord) {\n          const element = changeRecord.target\n          element.isVisible = (_isViewable(changeRecord.boundingClientRect, changeRecord.intersectionRect))\n          if ('isVisible' in element && element.isVisible && !isFiredViewableEvent) {\n            visibleTimeout = setTimeout(_visibleTimerCallback, VIEWABLE_CONTINUOUS_TIME, element, observer)\n          } else {\n            _releaseTimer(element)\n          }\n        })\n      }\n\n      viewableInstance._instance = new window.IntersectionObserver(function (entries, observer) {\n        _processChanges(entries, observer)\n      }, {\n        threshold: [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0],\n        trackVisibility: true,\n        delay: 100\n      })\n\n      viewableInstance.start = () => viewableInstance._instance.observe(element)\n      viewableInstance.destroy = () => _releaseInstance(element, viewableInstance._instance)\n    } else {\n      viewableInstance._instance = new ViewableChecker({\n        target: element,\n        percentOfPixels: VIEWABLE_THRESHOLD,\n        minimumAmountOfTime: VIEWABLE_CONTINUOUS_TIME,\n        successCallback: function () {\n          onLoadCallback(element)\n        }\n      })\n\n      viewableInstance.start = () => viewableInstance._instance.measure()\n      viewableInstance.destroy = () => viewableInstance._instance.destroy()\n    }\n\n    return viewableInstance\n  }\n}\n\nfunction ViewableChecker () {\n  // TODO: IE 트레픽을 위해서 구현하거나 IntersectionObserver Polyfill 해야 함\n  return {\n    measure: function () {\n      // console.error(\"NOT IMPLEMENTED\")\n    },\n    destroy: function () {\n      // console.error(\"NOT IMPLEMENTED\")\n    }\n  }\n}\n","export default function uuid4 () {\n  var dt = new Date().getTime()\n  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {\n    var r = (dt + Math.random() * 16) % 16 | 0\n    return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16)\n  })\n}\n"],"sourceRoot":""}