moving localtunnel to peer dependency (#2059)

* moving localtunnel to peer dependency

* v3.0.0-alpha.0

* optiona

* v3.0.0-alpha.1

* remove package

* v3.0.0-alpha.2

* v3.0.0

---------

Co-authored-by: Shane Osbourne <sosbourne@duckduckgo.com>

lerna.json

@@ -2,5 +2,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "2.29.3"
+  "version": "3.0.0"
 }

packages/browser-sync-client/package.json

@@ -1,7 +1,7 @@
 {
 	"name": "browser-sync-client",
 	"description": "Client-side scripts for BrowserSync",
-	"version": "2.29.3",
+	"version": "3.0.0",
 	"homepage": "https://github.com/shakyshane/browser-sync-client",
 	"author": "Shane Osbourne <shane.osbourne8@gmail.com>",
 	"repository": {

packages/browser-sync-ui/package.json

@@ -1,7 +1,7 @@
 {
 	"name": "browser-sync-ui",
 	"description": "User Interface for BrowserSync",
-	"version": "2.29.3",
+	"version": "3.0.0",
 	"homepage": "http://www.browsersync.io/",
 	"author": {
 		"name": "Shane Osbourne"

packages/browser-sync/lib/async.js

@@ -225,6 +225,9 @@ module.exports = {
             var localTunnel = require("./tunnel");
             localTunnel(bs, function(err, tunnel) {
                 if (err) {
+                    if (err.code === "MODULE_NOT_FOUND") {
+                        return utils.fail(true, err, bs.cb);
+                    }
                     return done(err);
                 } else {
                     return done(null, {

packages/browser-sync/lib/tunnel.js

@@ -8,6 +8,17 @@ var utils = require("util");
  * @param {Function} cb
  */
 module.exports = function(bs, cb) {
+    var localtunnel;
+    try {
+        localtunnel = require("localtunnel");
+    } catch (e) {
+        if (e.code === "MODULE_NOT_FOUND") {
+            var error = new Error("Could not find package `localtunnel`. From Browsersync version 3.0 you'll need to install this manually.");
+            error.code = e.code;
+            return cb(error);
+        }
+        return cb(e);
+    }
     var opts = {};
     var options = bs.options;
     var port = options.get("port");
@@ -22,7 +33,7 @@ module.exports = function(bs, cb) {
         utils.inspect(opts)
     );
 
-    require("localtunnel")(port, opts, function(err, tunnel) {
+    localtunnel(port, opts, function(err, tunnel) {
         if (err) {
             return cb(err);
         }