@pubby/sdk/dist/esm/lib/event-emitter.js

Pubby Development Kit

import { __values, __read, __spread } from 'tslib';
import './streams/index.js';
import { fromEvent } from './streams/generators/from-event.js';

var _a;
var $listeners = Symbol("listeners");
var EventEmitter = /** @class */ (function () {
    function EventEmitter() {
        this[_a] = new Map();
    }
    EventEmitter.prototype.on = function (event) {
        var _b;
        var listeners = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            listeners[_i - 1] = arguments[_i];
        }
        var callbacks = (_b = this[$listeners].get(event)) !== null && _b !== void 0 ? _b : new Map();
        listeners.forEach(function (handler) { return callbacks.set(handler, { once: false }); });
        this[$listeners].set(event, callbacks);
        return this;
    };
    EventEmitter.prototype.once = function (event) {
        var _b;
        var listeners = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            listeners[_i - 1] = arguments[_i];
        }
        var callbacks = (_b = this[$listeners].get(event)) !== null && _b !== void 0 ? _b : new Map();
        listeners.forEach(function (handler) { return callbacks.set(handler, { once: true }); });
        this[$listeners].set(event, callbacks);
        return this;
    };
    EventEmitter.prototype.off = function (event) {
        var e_1, _b;
        var _c;
        var listeners = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            listeners[_i - 1] = arguments[_i];
        }
        // Remover todos os listeners de todos os eventos
        if (!event) {
            this[$listeners].clear();
            return this;
        }
        // Não há listeners para o evento
        if (!this[$listeners].has(event)) {
            return this;
        }
        // Remover todos os listeners do evento
        if (!listeners.length) {
            this[$listeners].delete(event);
            return this;
        }
        // Remover listener específico do evento
        var callbacks = (_c = this[$listeners].get(event)) !== null && _c !== void 0 ? _c : new Map();
        try {
            for (var listeners_1 = __values(listeners), listeners_1_1 = listeners_1.next(); !listeners_1_1.done; listeners_1_1 = listeners_1.next()) {
                var cb = listeners_1_1.value;
                callbacks.delete(cb);
            }
        }
        catch (e_1_1) { e_1 = { error: e_1_1 }; }
        finally {
            try {
                if (listeners_1_1 && !listeners_1_1.done && (_b = listeners_1.return)) _b.call(listeners_1);
            }
            finally { if (e_1) throw e_1.error; }
        }
        if (callbacks.size <= 0) {
            this[$listeners].delete(event);
        }
        return this;
    };
    EventEmitter.prototype.emit = function (event) {
        var e_2, _b;
        var args = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            args[_i - 1] = arguments[_i];
        }
        // Não há listeners para esse evento
        if (!this[$listeners].has(event)) {
            return this;
        }
        var callbacks = this[$listeners].get(event);
        try {
            for (var callbacks_1 = __values(callbacks), callbacks_1_1 = callbacks_1.next(); !callbacks_1_1.done; callbacks_1_1 = callbacks_1.next()) {
                var _c = __read(callbacks_1_1.value, 2), listener = _c[0], modifiers = _c[1];
                if (modifiers.once) {
                    callbacks.delete(listener);
                }
                listener.apply(void 0, __spread(args));
            }
        }
        catch (e_2_1) { e_2 = { error: e_2_1 }; }
        finally {
            try {
                if (callbacks_1_1 && !callbacks_1_1.done && (_b = callbacks_1.return)) _b.call(callbacks_1);
            }
            finally { if (e_2) throw e_2.error; }
        }
        return this;
    };
    EventEmitter.prototype.stream = function (event) {
        return fromEvent(this, event);
    };
    return EventEmitter;
}());
_a = $listeners;

export { EventEmitter };