new features, bug fixes and optimisations

Features:
* Updated to the latest Electron and React versions
* Reworked About page, so it loads the README from GitHub
* Linux support finished

Bug fixes:
* React effects now clean up correctly
* Immediate crash of client while launching no longer crashes the React front-end
* Better error handling and reporting for better UX
* Added proper MarkDown styling
* Fixed settings page loading twice and thus overwriting settings with defaults in some cases

Optimisations:
* Removed unused code
* Better debugging info in console
* Some code refactoring

README.md

@@ -25,14 +25,14 @@
 
 | Feature                   | Description                                                 | State |
 |---------------------------|-------------------------------------------------------------|-------|
-| Bundled Java              | Java installation bundled with the launcher (Java 8 and 16) | ⏳     |
+| Bundled Java              | Java installation bundled with the launcher (Java 8 and 16) | ❌     |
 | Minecraft Account Support | Support for Minecraft account logins                        | ✅     |
 | Mojang Account Support    | Support for Mojang account logins                           | ❌     |
 | Session Handling          | Store and refresh Microsoft login sessions as needed        | ✅     |
 | Minecraft Vanilla         | Launch Minecraft Vanilla                                    | ✅     |
 | Minecraft Forge           | Launch Minecraft Forge (only custom SWC modpacks)           | ✅     |
 | Support for Windows       | Support for Windows                                         | ✅     |
-| Support for Linux         | Support for Linux                                           | 🛠    |
+| Support for Linux         | Support for Linux                                           | ✅     |
 | Support for MacOS         | Support for MacOS                                           | 🛠    |
 | Configurable              | Most minecraft and java launch options are accessible       | ✅     |
 | Easy Account Switching    | Switch between multiple accounts easily                     | ✅     |

back/mc-connector.js

@@ -127,12 +127,21 @@ function launchVanilla(version) {
 
     launcher.launch(opts).then((childProcess) => {
         invoke("mc:gameLaunched")
-        runningClients[launcherUUID].pid = childProcess.pid
-        runningClients[launcherUUID].kill = () => childProcess.kill()
+
+        if(!childProcess){
+            invoke("mc:data", "Spawning child process failed because of an unknown error")
+            throw new Error("Client crashed before launch")
+        }
+
+        runningClients[launcherUUID].pid = childProcess.pid | null
+        runningClients[launcherUUID].kill = () => {
+            invoke("mc:data", "Killing child process...")
+            childProcess.kill()
+        }
         afterLaunchCalls()
     }).catch((e) => {
         delete runningClients[launcherUUID]
-        invoke("mc:gameLaunchError", e)
+        invoke("mc:gameLaunchError", e.message)
     })
 
     launcher.on('arguments', (e) => invoke("mc:arguments", e))
@@ -232,12 +241,21 @@ function launchModded(manifest) {
     launcher.launch(opts).then((childProcess) => {
         if(installNeeded) fs.writeFileSync(path.join(rootPath, "manifest.json"), JSON.stringify(manifest))
         invoke("mc:gameLaunched")
+
+        if(!childProcess){
+            invoke("mc:data", "Spawning child process failed because of an unknown error")
+            throw new Error("Client crashed before launch")
+        }
+
         runningClients[launcherUUID].pid = childProcess.pid
-        runningClients[launcherUUID].kill = () => childProcess.kill()
+        runningClients[launcherUUID].kill = () => {
+            invoke("mc:data", "Killing child process...")
+            childProcess.kill()
+        }
         afterLaunchCalls()
     }).catch((e) => {
         delete runningClients[launcherUUID]
-        invoke("mc:gameLaunchError", e)
+        invoke("mc:gameLaunchError", e.message)
     })
 
     launcher.on('arguments', (e) => invoke("mc:arguments", e))

back/tools.js

@@ -1,8 +1,6 @@
 const fs = require("fs")
 const path = require("path")
 const {registerIpcListener} = require("./ipc-handler");
-const MarkdownIt = require("markdown-it");
-const config = require("./config");
 
 class EventEmitter {
     constructor(){
@@ -75,31 +73,6 @@ function sleep(x) {
     Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, x)
 }
 
-const builtMarkdown = {}
-registerIpcListener("render-markdown-file", (e, file) => {
-    if(builtMarkdown[file] && !config.devMode){
-        return builtMarkdown[file]
-    }
-
-    try {
-        let data = file !== "README.md" ?
-            fs.readFileSync(
-                path.join(__dirname, "../templates/components", file),
-                "utf8"
-            ) :
-            fs.readFileSync(
-                path.join(__dirname, "../README.md"),
-                "utf8"
-            )
-
-        let md = MarkdownIt({html: true, linkify: true}).render(data)
-        builtMarkdown[file] = md
-        return md
-    } catch (err) {
-        return false
-    }
-})
-
 registerIpcListener("open-explorer", (e, file) => {
     if(fs.lstatSync(file).isDirectory()){
         return require("electron").shell.openPath(file)