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shadow$provide.module$node_modules$eventemitter3$index = function(global, require, module, exports) {
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function Events() {
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}
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function EE(fn, context, once) {
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this.fn = fn;
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this.context = context;
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this.once = once || !1;
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}
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function addListener(emitter, event, fn, context, once) {
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if ("function" !== typeof fn) {
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throw new TypeError("The listener must be a function");
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}
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fn = new EE(fn, context || emitter, once);
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event = prefix ? prefix + event : event;
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emitter._events[event] ? emitter._events[event].fn ? emitter._events[event] = [emitter._events[event], fn] : emitter._events[event].push(fn) : (emitter._events[event] = fn, emitter._eventsCount++);
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return emitter;
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}
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function clearEvent(emitter, evt) {
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0 === --emitter._eventsCount ? emitter._events = new Events() : delete emitter._events[evt];
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}
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function EventEmitter() {
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this._events = new Events();
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this._eventsCount = 0;
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}
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var has = Object.prototype.hasOwnProperty, prefix = "~";
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Object.create && (Events.prototype = Object.create(null), (new Events()).__proto__ || (prefix = !1));
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EventEmitter.prototype.eventNames = function() {
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var names = [], events, name;
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if (0 === this._eventsCount) {
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return names;
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}
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for (name in events = this._events) {
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has.call(events, name) && names.push(prefix ? name.slice(1) : name);
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}
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return Object.getOwnPropertySymbols ? names.concat(Object.getOwnPropertySymbols(events)) : names;
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};
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EventEmitter.prototype.listeners = function(event) {
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event = this._events[prefix ? prefix + event : event];
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if (!event) {
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return [];
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}
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if (event.fn) {
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return [event.fn];
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}
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for (var i = 0, l = event.length, ee = Array(l); i < l; i++) {
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ee[i] = event[i].fn;
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}
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return ee;
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};
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EventEmitter.prototype.listenerCount = function(event) {
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return (event = this._events[prefix ? prefix + event : event]) ? event.fn ? 1 : event.length : 0;
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};
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EventEmitter.prototype.emit = function(event, a1, a2, a3, a4, a5) {
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var evt = prefix ? prefix + event : event;
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if (!this._events[evt]) {
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return !1;
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}
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evt = this._events[evt];
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var len = arguments.length, args;
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if (evt.fn) {
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evt.once && this.removeListener(event, evt.fn, void 0, !0);
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switch(len) {
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case 1:
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return evt.fn.call(evt.context), !0;
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case 2:
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return evt.fn.call(evt.context, a1), !0;
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case 3:
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return evt.fn.call(evt.context, a1, a2), !0;
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case 4:
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return evt.fn.call(evt.context, a1, a2, a3), !0;
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case 5:
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return evt.fn.call(evt.context, a1, a2, a3, a4), !0;
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case 6:
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return evt.fn.call(evt.context, a1, a2, a3, a4, a5), !0;
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}
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var i = 1;
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for (args = Array(len - 1); i < len; i++) {
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args[i - 1] = arguments[i];
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}
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evt.fn.apply(evt.context, args);
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} else {
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var length = evt.length;
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for (i = 0; i < length; i++) {
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switch(evt[i].once && this.removeListener(event, evt[i].fn, void 0, !0), len) {
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case 1:
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evt[i].fn.call(evt[i].context);
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break;
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case 2:
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evt[i].fn.call(evt[i].context, a1);
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break;
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case 3:
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evt[i].fn.call(evt[i].context, a1, a2);
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break;
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case 4:
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evt[i].fn.call(evt[i].context, a1, a2, a3);
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break;
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default:
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if (!args) {
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var j = 1;
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for (args = Array(len - 1); j < len; j++) {
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args[j - 1] = arguments[j];
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}
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}
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evt[i].fn.apply(evt[i].context, args);
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}
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}
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}
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return !0;
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};
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EventEmitter.prototype.on = function(event, fn, context) {
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return addListener(this, event, fn, context, !1);
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};
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EventEmitter.prototype.once = function(event, fn, context) {
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return addListener(this, event, fn, context, !0);
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};
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EventEmitter.prototype.removeListener = function(event, fn, context, once) {
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event = prefix ? prefix + event : event;
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if (!this._events[event]) {
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return this;
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}
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if (!fn) {
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return clearEvent(this, event), this;
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}
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var listeners = this._events[event];
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if (listeners.fn) {
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listeners.fn !== fn || once && !listeners.once || context && listeners.context !== context || clearEvent(this, event);
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} else {
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for (var i = 0, events = [], length = listeners.length; i < length; i++) {
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(listeners[i].fn !== fn || once && !listeners[i].once || context && listeners[i].context !== context) && events.push(listeners[i]);
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}
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events.length ? this._events[event] = 1 === events.length ? events[0] : events : clearEvent(this, event);
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}
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return this;
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};
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EventEmitter.prototype.removeAllListeners = function(event) {
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event ? (event = prefix ? prefix + event : event, this._events[event] && clearEvent(this, event)) : (this._events = new Events(), this._eventsCount = 0);
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return this;
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};
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EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
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EventEmitter.prototype.addListener = EventEmitter.prototype.on;
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EventEmitter.prefixed = prefix;
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EventEmitter.EventEmitter = EventEmitter;
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"undefined" !== typeof module && (module.exports = EventEmitter);
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};
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//# sourceMappingURL=module$node_modules$eventemitter3$index.js.map
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