fix kiss-vscode config hot-reloading

projects/kiss-vscode/build.hxml

@@ -1,6 +1,7 @@
 -lib vscode
 -lib hxnodejs
 -lib kiss
+-lib uuid
 -cp src
 -js bin/extension.js
 -D analyzer-optimize

projects/kiss-vscode/package.json

@@ -2,7 +2,7 @@
 	"name": "kiss-vscode",
 	"displayName": "kiss-vscode",
 	"description": "Kiss language plugin",
-	"version": "0.0.3",
+	"version": "0.0.4",
 	"engines": {
 		"vscode": "^1.4.0"
 	},

projects/kiss-vscode/src/Main.hx

@@ -6,8 +6,10 @@ import kiss.Prelude;
 import haxe.io.Path;
 import js.Node;
 import js.node.ChildProcess;
+import uuid.Uuid;
 
 using StringTools;
+using uuid.Uuid;
 
 typedef Command = (String) -> Void;
 

projects/kiss-vscode/src/Main.kiss

@@ -30,11 +30,14 @@
             (let [buildResult
                         (ChildProcess.spawnSync "haxe" ["build.hxml"] (object cwd activeConfigDir))]
                 (if (and !buildResult.error (= 0 buildResult.status))
-                        // Successful compilation! require the config.js package
-                        (begin
-                            // TODO Node.require() caches the module so re-opening vscode is still required:
-                            // https://stackoverflow.com/questions/9210542/node-js-require-cache-possible-to-invalidate
-                            (set config .KissConfig (Node.require (Path.join [activeConfigDir "config.js"])))
+                        // Successful compilation! require the config.js package.
+                        // But since Node.require() caches modules by filename,
+                        // copy it to a unique path first so hot-reloading works properly.
+                        (let [activeConfigFile (Path.join [activeConfigDir "config.js"])
+                                uniqueConfigFile (Path.join [activeConfigDir "$(.toShort (Uuid.v4)).js"])]
+                            (File.copy activeConfigFile uniqueConfigFile)
+                            (set config .KissConfig (Node.require uniqueConfigFile))
+                            (FileSystem.deleteFile uniqueConfigFile)
                             (.registerBuiltins (the KissConfig config))
                             (.registerCommand (the KissConfig config) "Reload Kiss config" tryLoadConfig)
                             (.init (the KissConfig config))
@@ -65,5 +68,7 @@
                     (Vscode.window.showErrorMessage "Can't run commands! No config is loaded."))
                     (return))))
 
+    // TODO overload Prelude.print to use showInformationMessage
+
     (set activeConfigDir (Path.join [context.extensionPath "config"]))
     (tryLoadConfig))