"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Waiter = void 0;
class Waiter {
    constructor(data = undefined) {
        this._data = undefined;
        this._callback = [];
        this._data = data;
    }
    set(data) {
        this._data = data;
        for (const callback of this._callback) {
            callback(data);
        }
        this._callback = [];
    }
    clear() {
        this._data = undefined;
    }
    once() {
        return __awaiter(this, void 0, void 0, function* () {
            if (this._data !== undefined) {
                return this._data;
            }
            else {
                return new Promise((resolve, reject) => {
                    const callback = () => {
                        resolve(this._data);
                    };
                    this._callback.push(callback);
                });
            }
        });
    }
}
exports.Waiter = Waiter;
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