webassembly doesnt end with main...

druntime/src/rt/dmain2.d

@@ -524,8 +524,16 @@ private extern (C) int _d_run_main2(char[][] args, size_t totalArgsLength, MainF
         else
             result = EXIT_FAILURE;
 
-        if (!rt_term())
-            result = (result == EXIT_SUCCESS) ? EXIT_FAILURE : result;
+	version(WebAssembly) {
+            // for wasm, it is possible that main is set up to run async;
+            // it just set up event handlers and keeps going. as such we will not
+            // actually call rt_term as the program does not actually exit until
+            // the browser tab is closed
+            result = EXIT_SUCCESS;
+        } else {
+            if (!rt_term())
+                result = (result == EXIT_SUCCESS) ? EXIT_FAILURE : result;
+        }
     }
 
     tryExec(&runAll);

opend/src/opend.d

@@ -321,7 +321,7 @@ struct Commands {
 				`);
 
 				import std.stdio;
-				writeln("Installation complete, build with `opend build -mtriple=wasm32-emscripten <other args>`");
+				writeln("Installation complete, build with `opend --target=emscripten <other args>`");
 				writeln("You will need the emsdk. Install that separately and follow its instructions to activate it before trying to build D code because opend will use emcc to finish the link step.");
 				writeln("https://emscripten.org/docs/getting_started/downloads.html");
 
@@ -339,7 +339,7 @@ struct Commands {
 				`);
 
 				import std.stdio;
-				writeln("Installation complete, build with `opend build -mtriple=x86_64-windows-msvc <other args>`");
+				writeln("Installation complete, build with `opend --target=win64 <other args>`");
 
 				return 0;
 			default: