Add mutator method for basePath

lib/portfinder.d.ts

@@ -60,3 +60,13 @@ export function getPorts(count: number, options: PortFinderOptions, callback: (e
  * Responds a promise of an unbound port on the current machine.
  */
 export function getPortPromise(options?: PortFinderOptions): Promise<number>;
+
+/**
+ * Default path to begin any socket search from.
+ */
+ export let basePath: string;
+
+/**
+ * Set the base path to begin any socket search from.
+ */
+export function setBasePath(path: string): void;

lib/portfinder.js

@@ -115,6 +115,13 @@ exports.setHighestPort = function (port) {
 exports.basePath = '/tmp/portfinder'
 
 //
+// ### function setBasePath (path)
+// #### @path {String} The new base path
+//
+exports.setBasePath = function (path) {
+  exports.basePath = path;
+}
+
 // ### function getPort (options, callback)
 // #### @options {Object} Settings to use when finding the necessary port
 // #### @callback {function} Continuation to respond to when complete.