@luvies/business-rules/dist/result-listener.js

A JS-expression-based rules engine

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class ResultListener {
    constructor() {
        this._results = new Map();
        this._listeners = [];
    }
    onResult(id, result) {
        const listeners = this._listeners.filter(listener => {
            return listener.target === id;
        });
        for (const listener of listeners) {
            listener.resolve(result);
            this._listeners.splice(this._listeners.indexOf(listener), 1);
        }
        this._results.set(id, result);
    }
    async wait(id) {
        if (this._results.has(id)) {
            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
            return this._results.get(id);
        }
        return new Promise(resolve => {
            this._listeners.push({
                resolve,
                target: id,
            });
        });
    }
}
exports.ResultListener = ResultListener;
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