Events.js
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"use strict";
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
var Events;
Events = class Events {
constructor(instance) {
this.instance = instance;
this._events = {};
if (this.instance.on != null || this.instance.once != null || this.instance.removeAllListeners != null) {
throw new Error("An Emitter already exists for this object");
}
this.instance.on = (name, cb) => {
return this._addListener(name, "many", cb);
};
this.instance.once = (name, cb) => {
return this._addListener(name, "once", cb);
};
this.instance.removeAllListeners = (name = null) => {
if (name != null) {
return delete this._events[name];
} else {
return this._events = {};
}
};
}
_addListener(name, status, cb) {
var base;
if ((base = this._events)[name] == null) {
base[name] = [];
}
this._events[name].push({
cb,
status
});
return this.instance;
}
listenerCount(name) {
if (this._events[name] != null) {
return this._events[name].length;
} else {
return 0;
}
}
trigger(name, ...args) {
var _this = this;
return _asyncToGenerator(function* () {
var e, promises;
try {
if (name !== "debug") {
_this.trigger("debug", `Event triggered: ${name}`, args);
}
if (_this._events[name] == null) {
return;
}
_this._events[name] = _this._events[name].filter(function (listener) {
return listener.status !== "none";
});
promises = _this._events[name].map(
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (listener) {
var e, returned;
if (listener.status === "none") {
return;
}
if (listener.status === "once") {
listener.status = "none";
}
try {
returned = typeof listener.cb === "function" ? listener.cb(...args) : void 0;
if (typeof (returned != null ? returned.then : void 0) === "function") {
return yield returned;
} else {
return returned;
}
} catch (error) {
e = error;
if ("name" !== "error") {
_this.trigger("error", e);
}
return null;
}
});
return function (_x) {
return _ref.apply(this, arguments);
};
}());
return (yield Promise.all(promises)).find(function (x) {
return x != null;
});
} catch (error) {
e = error;
if ("name" !== "error") {
_this.trigger("error", e);
}
return null;
}
})();
}
};
module.exports = Events;