Find an unused port to serve from

Signed-off-by: Richie Bendall <richiebendall@gmail.com>

cli.js

@@ -8,6 +8,7 @@ const ora = require("ora")
 const path = require("path")
 const updateNotifier = require("update-notifier")
 const exitHook = require("exit-hook")
+const getPort = require("get-port")
 const pkg = require("./package.json")
 
 const { babel } = require("@rollup/plugin-babel")
@@ -97,6 +98,7 @@ module.exports = (async () => {
 					open: true,
 					openPage: `?extension=${path.basename(outputFile)}`,
 					verbose: false,
+					port: await getPort({port: 8080}),
 					contentBase: [
 						path.dirname(outputFile),
 						path.dirname(require.resolve("scratch-gui/lib.min"))

package.json

@@ -38,11 +38,12 @@
 		"@rollup/plugin-typescript": "^5.0.2",
 		"chalk": "^4.1.0",
 		"exit-hook": "^2.2.0",
+		"get-port": "^5.1.1",
 		"meow": "^7.1.0",
 		"ora": "^5.0.0",
 		"path-exists": "^4.0.0",
 		"rollup": "^2.26.6",
-		"rollup-plugin-serve": "^1.0.4",
+		"rollup-plugin-serve": "^1.1.0",
 		"scratch-gui": "SheepTester/scratch-gui#ca7b69cbae7f37870f05d6ccc1d1d32584918980",
 		"update-notifier": "^4.1.1"
 	},