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metaapi.cloud-sdk

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SDK for MetaApi, a professional cloud forex API which includes MetaTrader REST API and MetaTrader websocket API. Supports both MetaTrader 5 (MT5) and MetaTrader 4 (MT4). CopyFactory copy trading API included. (https://metaapi.cloud)

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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 _async_to_generator(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); }); }; } function _define_property(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } import LoggerManager from '../logger'; /** * Custom event emitter implementation for use */ let EventEmitter = class EventEmitter { /** * Subscribes a listener to event * @param event Event to subscribe to * @param callback Listener function to subscribe */ on(event, callback) { if (!event) { throw new Error('Event name is empty or undefined'); } this._listeners[event] = this._listeners[event] || new Set(); this._listeners[event].add(callback); } /** * Unsubscribes a listener from event * @param event Event to unsubscribe from * @param callback Callback to unsubscribe */ off(event, callback) { if (this._listeners[event]) { this._listeners[event].delete(callback); if (!this._listeners[event].size) { delete this._listeners[event]; } } } /** * Subscribes a listener to event once * @param event Event to subscribe to * @param callback Listener function to subscribe * @param options Additional options */ once(event, callback, options) { let listener = (...args)=>{ if (!(options === null || options === void 0 ? void 0 : options.ifArgs) || (options === null || options === void 0 ? void 0 : options.ifArgs(...args))) { this.off(event, listener); return callback(...args); } }; this.on(event, listener); } /** * Emits an event * @param event Event to emit * @param data Event payload * @returns Promise resolving when all listeners calls completed. Usually async version is useful if listeners may * return promises and the call should wait for them. If one of listener rejects or throws an error, it will be * logged. Async listeners called all at once */ emit(event, ...args) { var _this = this; return _async_to_generator(function*() { var _this__listeners_event; if (!((_this__listeners_event = _this._listeners[event]) === null || _this__listeners_event === void 0 ? void 0 : _this__listeners_event.size)) { return; } let results = []; for (let listener of _this._listeners[event]){ results.push(_this._callListener(event, listener, args)); } return Promise.all(results); })(); } /** * Returns subscribed events * @returns subscribed events */ getSubscriptions() { return Object.keys(this._listeners); } /** * Returns subscribed event listeners * @param event Event * @returns Listeners */ getListeners(event) { var _this__listeners_event; if (!((_this__listeners_event = this._listeners[event]) === null || _this__listeners_event === void 0 ? void 0 : _this__listeners_event.size)) { return []; } return [ ...this._listeners[event].values() ]; } /** * Returns whether has listeners on specific event * @param event Event * @returns Whether has listeners */ hasListeners(event) { return !!this._listeners[event]; } _callListener(event, listener, args) { var _this = this; return _async_to_generator(function*() { try { yield listener(...args); } catch (err) { _this._eventEmitterLogger.error(`${event}: listener failed with error`, err); } })(); } /** * Constructs instance */ constructor(){ _define_property(this, "_listeners", void 0); _define_property(this, "_eventEmitterLogger", LoggerManager.getLogger('EventEmitter')); this._listeners = {}; } }; export default EventEmitter; //# sourceMappingURL=data:application/json;base64,{"version":3,"sources":["<anon>"],"sourcesContent":["'use strict';\n\nimport LoggerManager from '../logger';\n\n/**\n * Custom event emitter implementation for use\n */\nclass EventEmitter<L extends ListenerSignature<L> = DefaultListener> {\n\n  private _listeners: {[E in keyof L]?: Set<L[E]>};\n  private _eventEmitterLogger = LoggerManager.getLogger('EventEmitter');\n\n  /**\n   * Constructs instance\n   */\n  constructor() {\n    this._listeners = {};\n  }\n\n  /**\n   * Subscribes a listener to event\n   * @param event Event to subscribe to\n   * @param callback Listener function to subscribe\n   */\n  on<U extends EventEmitter.Event<L>>(event: U, callback: L[U]) {\n    if (!event) {\n      throw new Error('Event name is empty or undefined');\n    }\n    this._listeners[event] = this._listeners[event] || new Set();\n    this._listeners[event].add(callback);\n  }\n\n  /**\n   * Unsubscribes a listener from event\n   * @param event Event to unsubscribe from\n   * @param callback Callback to unsubscribe\n   */\n  off<U extends EventEmitter.Event<L>>(event: U, callback: L[U]) {\n    if (this._listeners[event]) {\n      this._listeners[event].delete(callback);\n      if (!this._listeners[event].size) {\n        delete this._listeners[event];\n      }\n    }\n  }\n\n  /**\n   * Subscribes a listener to event once\n   * @param event Event to subscribe to\n   * @param callback Listener function to subscribe\n   * @param options Additional options\n   */\n  once<U extends EventEmitter.Event<L>>(event: U, callback: L[U], options?: EventEmitter.OnceOptions<L[U]>) {\n    let listener: any = ((...args: Parameters<L[U]>) => {\n      if (!options?.ifArgs || options?.ifArgs(...args)) {\n        this.off(event, listener);\n        return callback(...args);\n      }\n    });\n    this.on(event, listener);\n  }\n\n  /**\n   * Emits an event\n   * @param event Event to emit\n   * @param data Event payload\n   * @returns Promise resolving when all listeners calls completed. Usually async version is useful if listeners may\n   * return promises and the call should wait for them. If one of listener rejects or throws an error, it will be\n   * logged. Async listeners called all at once\n   */\n  async emit<U extends EventEmitter.Event<L>>(event: U, ...args: Parameters<L[U]>): Promise<void> {\n    if (!this._listeners[event]?.size) {\n      return;\n    }\n    let results = [];\n    for (let listener of this._listeners[event]) {\n      results.push(this._callListener(event as string, listener, args));\n    }\n    return Promise.all(results) as any;\n  }\n\n  /**\n   * Returns subscribed events\n   * @returns subscribed events\n   */\n  getSubscriptions(): EventEmitter.Event<L>[] {\n    return Object.keys(this._listeners) as EventEmitter.Event<L>[];\n  }\n\n  /**\n   * Returns subscribed event listeners\n   * @param event Event\n   * @returns Listeners\n   */\n  getListeners<U extends EventEmitter.Event<L>>(event: U): L[U][] {\n    if (!this._listeners[event]?.size) {\n      return [];\n    }\n    return [...this._listeners[event].values()];\n  }\n\n  /**\n   * Returns whether has listeners on specific event\n   * @param event Event\n   * @returns Whether has listeners\n   */\n  hasListeners<U extends EventEmitter.Event<L>>(event: U): boolean {\n    return !!this._listeners[event];\n  }\n\n  private async _callListener(event: string, listener: (...args: any) => any, args: any[]) {\n    try {\n      await listener(...args);\n    } catch (err) {\n      this._eventEmitterLogger.error(`${event}: listener failed with error`, err);\n    }\n  }\n}\n\nnamespace EventEmitter {\n\n  /** Method options */\n  export type OnceOptions<Listener extends (...args: any[]) => any> = {\n    /**\n     * If specified, the listener will be called only if the callback returns true. Otherwise, the listener will wait\n     * for the next matching call\n     */\n    ifArgs?: (...args: Parameters<Listener>) => boolean;\n  };\n\n  /** Infers event type of a listener */\n  export type Event<L extends ListenerSignature<L>> = Extract<keyof L, string>;\n}\n\nexport default EventEmitter;\n\n/**\n * Event emitter listener type\n */\nexport type ListenerSignature<Listeners> = {\n  [EventName in keyof Listeners]: (...args: any[]) => any;\n};\n\n/**\n * Default event emitter listener type\n */\nexport type DefaultListener = {\n  [k: string]: (...args: any[]) => any;\n};\n"],"names":["LoggerManager","EventEmitter","on","event","callback","Error","_listeners","Set","add","off","delete","size","once","options","listener","args","ifArgs","emit","results","push","_callListener","Promise","all","getSubscriptions","Object","keys","getListeners","values","hasListeners","err","_eventEmitterLogger","error","constructor","getLogger"],"mappings":"AAAA;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAEA,OAAOA,mBAAmB,YAAY;AAEtC;;CAEC,GACD,IAAA,AAAMC,eAAN,MAAMA;IAYJ;;;;GAIC,GACDC,GAAoCC,KAAQ,EAAEC,QAAc,EAAE;QAC5D,IAAI,CAACD,OAAO;YACV,MAAM,IAAIE,MAAM;QAClB;QACA,IAAI,CAACC,UAAU,CAACH,MAAM,GAAG,IAAI,CAACG,UAAU,CAACH,MAAM,IAAI,IAAII;QACvD,IAAI,CAACD,UAAU,CAACH,MAAM,CAACK,GAAG,CAACJ;IAC7B;IAEA;;;;GAIC,GACDK,IAAqCN,KAAQ,EAAEC,QAAc,EAAE;QAC7D,IAAI,IAAI,CAACE,UAAU,CAACH,MAAM,EAAE;YAC1B,IAAI,CAACG,UAAU,CAACH,MAAM,CAACO,MAAM,CAACN;YAC9B,IAAI,CAAC,IAAI,CAACE,UAAU,CAACH,MAAM,CAACQ,IAAI,EAAE;gBAChC,OAAO,IAAI,CAACL,UAAU,CAACH,MAAM;YAC/B;QACF;IACF;IAEA;;;;;GAKC,GACDS,KAAsCT,KAAQ,EAAEC,QAAc,EAAES,OAAwC,EAAE;QACxG,IAAIC,WAAiB,CAAC,GAAGC;YACvB,IAAI,EAACF,oBAAAA,8BAAAA,QAASG,MAAM,MAAIH,oBAAAA,8BAAAA,QAASG,MAAM,IAAID,QAAO;gBAChD,IAAI,CAACN,GAAG,CAACN,OAAOW;gBAChB,OAAOV,YAAYW;YACrB;QACF;QACA,IAAI,CAACb,EAAE,CAACC,OAAOW;IACjB;IAEA;;;;;;;GAOC,GACD,AAAMG,KAAsCd,KAAQ,EAAE,GAAGY,IAAsB;;eAA/E,oBAAA;gBACO;YAAL,IAAI,GAAC,yBAAA,MAAKT,UAAU,CAACH,MAAM,cAAtB,6CAAA,uBAAwBQ,IAAI,GAAE;gBACjC;YACF;YACA,IAAIO,UAAU,EAAE;YAChB,KAAK,IAAIJ,YAAY,MAAKR,UAAU,CAACH,MAAM,CAAE;gBAC3Ce,QAAQC,IAAI,CAAC,MAAKC,aAAa,CAACjB,OAAiBW,UAAUC;YAC7D;YACA,OAAOM,QAAQC,GAAG,CAACJ;QACrB;;IAEA;;;GAGC,GACDK,mBAA4C;QAC1C,OAAOC,OAAOC,IAAI,CAAC,IAAI,CAACnB,UAAU;IACpC;IAEA;;;;GAIC,GACDoB,aAA8CvB,KAAQ,EAAU;YACzD;QAAL,IAAI,GAAC,yBAAA,IAAI,CAACG,UAAU,CAACH,MAAM,cAAtB,6CAAA,uBAAwBQ,IAAI,GAAE;YACjC,OAAO,EAAE;QACX;QACA,OAAO;eAAI,IAAI,CAACL,UAAU,CAACH,MAAM,CAACwB,MAAM;SAAG;IAC7C;IAEA;;;;GAIC,GACDC,aAA8CzB,KAAQ,EAAW;QAC/D,OAAO,CAAC,CAAC,IAAI,CAACG,UAAU,CAACH,MAAM;IACjC;IAEciB,cAAcjB,KAAa,EAAEW,QAA+B,EAAEC,IAAW;;eAAvF,oBAAA;YACE,IAAI;gBACF,MAAMD,YAAYC;YACpB,EAAE,OAAOc,KAAK;gBACZ,MAAKC,mBAAmB,CAACC,KAAK,CAAC,CAAC,EAAE5B,MAAM,4BAA4B,CAAC,EAAE0B;YACzE;QACF;;IAxGA;;GAEC,GACDG,aAAc;QANd,uBAAQ1B,cAAR,KAAA;QACA,uBAAQwB,uBAAsB9B,cAAciC,SAAS,CAAC;QAMpD,IAAI,CAAC3B,UAAU,GAAG,CAAC;IACrB;AAoGF;AAiBA,eAAeL,aAAa"}