Update Jupyter notebook to install node 18, update the server in example (#3176)

* Update Jupyter notebook to install node 18, update the server in example

* revert unintended metadata changes

Author: extremeheat

docs/mineflayer.ipynb

@@ -36,7 +36,7 @@
       "source": [
         "# Using mineflayer in Python\n",
         "\n",
-        "This is a tutorial on how to use mineflayer in Python. This example will connect you to the PrismarineJS test server. You can join it with prismarine-viewer or your Minecraft client at server IP **95.111.249.143:10000**.\n",
+        "This is a tutorial on how to use mineflayer in Python. This example will connect you to the PrismarineJS test server. You can join it with prismarine-viewer or your Minecraft client at server IP **pjs.deptofcraft.com:25565**.\n",
         "\n",
         "If you're new to Jupyter Notebooks, you can press the \"Play\" button at the left of each code block to run it. Make sure that you run the blocks in a correct order."
       ]
@@ -56,32 +56,35 @@
         "id": "K2ol06QOhL6s"
       },
       "source": [
-        "First, make sure you have Python version 3.7 and Node.js version 14 or newer installed"
+        "First, make sure you have Python version 3.10 and Node.js version 18 or newer installed. You can get Node.js 18 it from https://nodejs.org/en/download or use [Node.js version managers](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm#using-a-node-version-manager-to-install-nodejs-and-npm) like [`nvm`](https://github.com/creationix/nvm) or [`n`](https://github.com/tj/n) to install via the command line. Here we'll use `n` to install Node.js v18, then check our Node and Python versions:"
       ]
     },
     {
       "cell_type": "code",
+      "execution_count": 1,
       "metadata": {
         "colab": {
           "base_uri": "https://localhost:8080/"
         },
         "id": "8zCSpx8Bif5m",
-        "outputId": "f8888a33-03e7-4497-9776-ef6c34d9d337"
+        "outputId": "90ebac14-fc75-4136-f81d-34c5b2033da0"
       },
-      "source": [
-        "!python --version\n",
-        "!node --version"
-      ],
-      "execution_count": null,
       "outputs": [
         {
+          "name": "stdout",
           "output_type": "stream",
           "text": [
-            "Python 3.7.11\n",
-            "v14.16.0\n"
-          ],
-          "name": "stdout"
+            "v18.17.1\n",
+            "Python 3.10.12\n"
+          ]
         }
+      ],
+      "source": [
+        "# Use `n` to install nodejs 18, if it's not already installed:\n",
+        "!curl -fsSL https://raw.githubusercontent.com/tj/n/master/bin/n | bash -s lts > /dev/null\n",
+        "# Now write the Node.js and Python version to the console\n",
+        "!node --version\n",
+        "!python --version"
       ]
     },
     {
@@ -121,7 +124,7 @@
       "source": [
         "If all is well, we can import the `javascript` library. We can then import the `require` function which works similarly to the `require` function in Node.js, but does the dependency management for us.\n",
         "\n",
-        "You may notice the extra imports : On, Once, off and AsyncTask. These will be discussed later on. \n",
+        "You may notice the extra imports : On, Once, off and AsyncTask. These will be discussed later on.\n",
         "\n",
         "\n"
       ]
@@ -170,21 +173,21 @@
     },
     {
       "cell_type": "code",
+      "execution_count": null,
       "metadata": {
         "id": "1gfZSAUCDVMg"
       },
+      "outputs": [],
       "source": [
         "random_number = id([]) % 1000 # Give us a random number upto 1000\n",
         "BOT_USERNAME = f'colab_{random_number}'\n",
         "\n",
-        "bot = mineflayer.createBot({ 'host': '95.111.249.143', 'port': 10000, 'username': BOT_USERNAME, 'hideErrors': False })\n",
+        "bot = mineflayer.createBot({ 'host': 'pjs.deptofcraft.com', 'port': 25565, 'username': BOT_USERNAME, 'hideErrors': False })\n",
         "\n",
-        "# The spawn event \n",
+        "# The spawn event\n",
         "once(bot, 'login')\n",
         "bot.chat('I spawned')"
-      ],
-      "execution_count": null,
-      "outputs": []
+      ]
     },
     {
       "cell_type": "markdown",