alm/src/server/utils/getPort.js

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"use strict";
/**
 * Based of https://gist.github.com/mikeal/1840641
 * But modified to support searching from a particular port
 * Also the original did not actually work.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var http = require("http");
exports.getPort = function (startPort) {
    if (startPort === void 0) { startPort = 4444; }
    var tryGetPort = function (cb) {
        var port = startPort;
        startPort += 1;
        var server = http.createServer(function () { return null; });
        server.on('error', function (err) {
            tryGetPort(cb);
        });
        server.listen(port, '0.0.0.0', function (err) {
            // Found one!
            server.once('close', function () {
                cb(port);
            });
            server.close();
        });
    };
    var resolve;
    var prom = new Promise(function (res) { return resolve = res; });
    tryGetPort(resolve);
    return prom;
};