gatsby-source-prismic/dist/_node_modules/eventemitter3/index.js

Gatsby source plugin for building websites using Prismic as a data source

import { getDefaultExportFromCjs } from "../../_virtual/_commonjsHelpers.js";
import { __module as eventemitter3 } from "../../_virtual/index.js";
(function(module) {
  var has = Object.prototype.hasOwnProperty, prefix = "~";
  function Events() {
  }
  if (Object.create) {
    Events.prototype = /* @__PURE__ */ Object.create(null);
    if (!new Events().__proto__)
      prefix = false;
  }
  function EE(fn, context, once) {
    this.fn = fn;
    this.context = context;
    this.once = once || false;
  }
  function addListener(emitter, event, fn, context, once) {
    if (typeof fn !== "function") {
      throw new TypeError("The listener must be a function");
    }
    var listener = new EE(fn, context || emitter, once), evt = prefix ? prefix + event : event;
    if (!emitter._events[evt])
      emitter._events[evt] = listener, emitter._eventsCount++;
    else if (!emitter._events[evt].fn)
      emitter._events[evt].push(listener);
    else
      emitter._events[evt] = [emitter._events[evt], listener];
    return emitter;
  }
  function clearEvent(emitter, evt) {
    if (--emitter._eventsCount === 0)
      emitter._events = new Events();
    else
      delete emitter._events[evt];
  }
  function EventEmitter2() {
    this._events = new Events();
    this._eventsCount = 0;
  }
  EventEmitter2.prototype.eventNames = function eventNames() {
    var names = [], events, name;
    if (this._eventsCount === 0)
      return names;
    for (name in events = this._events) {
      if (has.call(events, name))
        names.push(prefix ? name.slice(1) : name);
    }
    if (Object.getOwnPropertySymbols) {
      return names.concat(Object.getOwnPropertySymbols(events));
    }
    return names;
  };
  EventEmitter2.prototype.listeners = function listeners(event) {
    var evt = prefix ? prefix + event : event, handlers = this._events[evt];
    if (!handlers)
      return [];
    if (handlers.fn)
      return [handlers.fn];
    for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {
      ee[i] = handlers[i].fn;
    }
    return ee;
  };
  EventEmitter2.prototype.listenerCount = function listenerCount(event) {
    var evt = prefix ? prefix + event : event, listeners = this._events[evt];
    if (!listeners)
      return 0;
    if (listeners.fn)
      return 1;
    return listeners.length;
  };
  EventEmitter2.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
    var evt = prefix ? prefix + event : event;
    if (!this._events[evt])
      return false;
    var listeners = this._events[evt], len = arguments.length, args, i;
    if (listeners.fn) {
      if (listeners.once)
        this.removeListener(event, listeners.fn, void 0, true);
      switch (len) {
        case 1:
          return listeners.fn.call(listeners.context), true;
        case 2:
          return listeners.fn.call(listeners.context, a1), true;
        case 3:
          return listeners.fn.call(listeners.context, a1, a2), true;
        case 4:
          return listeners.fn.call(listeners.context, a1, a2, a3), true;
        case 5:
          return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
        case 6:
          return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
      }
      for (i = 1, args = new Array(len - 1); i < len; i++) {
        args[i - 1] = arguments[i];
      }
      listeners.fn.apply(listeners.context, args);
    } else {
      var length = listeners.length, j;
      for (i = 0; i < length; i++) {
        if (listeners[i].once)
          this.removeListener(event, listeners[i].fn, void 0, true);
        switch (len) {
          case 1:
            listeners[i].fn.call(listeners[i].context);
            break;
          case 2:
            listeners[i].fn.call(listeners[i].context, a1);
            break;
          case 3:
            listeners[i].fn.call(listeners[i].context, a1, a2);
            break;
          case 4:
            listeners[i].fn.call(listeners[i].context, a1, a2, a3);
            break;
          default:
            if (!args)
              for (j = 1, args = new Array(len - 1); j < len; j++) {
                args[j - 1] = arguments[j];
              }
            listeners[i].fn.apply(listeners[i].context, args);
        }
      }
    }
    return true;
  };
  EventEmitter2.prototype.on = function on(event, fn, context) {
    return addListener(this, event, fn, context, false);
  };
  EventEmitter2.prototype.once = function once(event, fn, context) {
    return addListener(this, event, fn, context, true);
  };
  EventEmitter2.prototype.removeListener = function removeListener(event, fn, context, once) {
    var evt = prefix ? prefix + event : event;
    if (!this._events[evt])
      return this;
    if (!fn) {
      clearEvent(this, evt);
      return this;
    }
    var listeners = this._events[evt];
    if (listeners.fn) {
      if (listeners.fn === fn && (!once || listeners.once) && (!context || listeners.context === context)) {
        clearEvent(this, evt);
      }
    } else {
      for (var i = 0, events = [], length = listeners.length; i < length; i++) {
        if (listeners[i].fn !== fn || once && !listeners[i].once || context && listeners[i].context !== context) {
          events.push(listeners[i]);
        }
      }
      if (events.length)
        this._events[evt] = events.length === 1 ? events[0] : events;
      else
        clearEvent(this, evt);
    }
    return this;
  };
  EventEmitter2.prototype.removeAllListeners = function removeAllListeners(event) {
    var evt;
    if (event) {
      evt = prefix ? prefix + event : event;
      if (this._events[evt])
        clearEvent(this, evt);
    } else {
      this._events = new Events();
      this._eventsCount = 0;
    }
    return this;
  };
  EventEmitter2.prototype.off = EventEmitter2.prototype.removeListener;
  EventEmitter2.prototype.addListener = EventEmitter2.prototype.on;
  EventEmitter2.prefixed = prefix;
  EventEmitter2.EventEmitter = EventEmitter2;
  {
    module.exports = EventEmitter2;
  }
})(eventemitter3);
var eventemitter3Exports = eventemitter3.exports;
const EventEmitter = /* @__PURE__ */ getDefaultExportFromCjs(eventemitter3Exports);
export {
  EventEmitter as default
};
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