Sha256: 25914973d10a6e694ac437d5d3b580c7f087e8b50d6163cad30981189ed39103
Contents?: true
Size: 990 Bytes
Versions: 26
Compression:
Stored size: 990 Bytes
Contents
'use strict';
const pRetry = require('p-retry');
const portfinder = require('portfinder');
const defaultPort = require('./defaultPort');
const defaultTo = require('./defaultTo');
const tryParseInt = require('./tryParseInt');
function runPortFinder() {
return new Promise((resolve, reject) => {
portfinder.basePort = defaultPort;
portfinder.getPort((error, port) => {
if (error) {
return reject(error);
}
return resolve(port);
});
});
}
function findPort(port) {
if (port) {
return Promise.resolve(port);
}
// Try to find unused port and listen on it for 3 times,
// if port is not specified in options.
// Because NaN == null is false, defaultTo fails if parseInt returns NaN
// so the tryParseInt function is introduced to handle NaN
const defaultPortRetry = defaultTo(
tryParseInt(process.env.DEFAULT_PORT_RETRY),
3
);
return pRetry(runPortFinder, { retries: defaultPortRetry });
}
module.exports = findPort;
Version data entries
26 entries across 25 versions & 8 rubygems