fix autoversion (download data on demand)

scripts/esbuildPlugins.mjs

@@ -26,15 +26,29 @@ const plugins = [
         if (!resolveDir.endsWith('minecraft-data')) return
         return {
           namespace: 'load-global-minecraft-data',
-          path
+          path,
+          pluginData: {
+            resolveDir
+          },
         }
       })
       build.onLoad({
         filter: /.+/,
         namespace: 'load-global-minecraft-data',
-      }, () => {
+      }, ({ pluginData: { resolveDir } }) => {
+        const defaultVersionsObj = {
+          // default protocol data, needed for auto-select
+          "1.20.1": {
+            version: {
+              "minecraftVersion": "1.20.1",
+              "version": 763,
+              "majorVersion": "1.20"
+            },
+            protocol: JSON.parse(fs.readFileSync(join(resolveDir, 'minecraft-data/data/pc/1.20/protocol.json'), 'utf8')),
+          }
+        }
         return {
-          contents: 'window.mcData ??= {};module.exports = { pc: window.mcData }',
+          contents: `window.mcData ??= ${JSON.stringify(defaultVersionsObj)};module.exports = { pc: window.mcData }`,
           loader: 'js',
         }
       })
@@ -230,6 +244,7 @@ const plugins = [
   polyfillNode({
     polyfills: {
       fs: false,
+      dns: false,
       crypto: false,
       events: false,
       http: false,

src/index.js

@@ -364,12 +364,16 @@ async function connect (connectOptions) {
   let localServer
   try {
     Object.assign(serverOptions, _.defaultsDeep({}, connectOptions.serverOverrides ?? {}, options.localServerOptions, serverOptions))
-    let version = connectOptions.botVersion ?? serverOptions.version
-    if (version) {
+    const downloadMcData = async (version) => {
       setLoadingScreenStatus(`Downloading data for ${version}`)
       await loadScript(`./mc-data/${toMajorVersion(version)}.js`)
     }
 
+    const version = connectOptions.botVersion ?? serverOptions.version
+    if (version) {
+      downloadMcData(version)
+    }
+
     if (singeplayer) {
       // SINGLEPLAYER EXPLAINER:
       // Note 1: here we have custom sync communication between server Client (flying-squid) and game client (mineflayer)
@@ -411,7 +415,10 @@ async function connect (connectOptions) {
       viewDistance: 'tiny',
       checkTimeoutInterval: 240 * 1000,
       noPongTimeout: 240 * 1000,
-      closeTimeout: 240 * 1000
+      closeTimeout: 240 * 1000,
+      async versionSelectedHook (client) {
+        await downloadMcData(client.version)
+      }
     })
     if (singeplayer) {
       const _supportFeature = bot.supportFeature