Spent way too much time building a playground for.. reasons

_site/main.js

@@ -0,0 +1,63 @@
+import "xterm";
+import "wasm_exec";
+
+
+var term = new Terminal();
+term.open(document.getElementById('terminal'));
+
+function startSession(term) {
+    let buffer = "";
+    let lineBuffer = "";
+
+    term.writeln('Interactive mode');
+    term.write('> ');
+
+    term.onKey((ev, dom) => {
+        const {key} = ev;
+
+        switch (key) {
+            case '\r':
+                // Enter
+                term.writeln('');
+
+                let wantContinue = lineBuffer.length > 0;
+                buffer += lineBuffer;
+                lineBuffer = '';
+
+                ucl.eval(buffer, wantContinue);
+                break;
+            case '\u007F':
+                // Backspace
+                if (lineBuffer.length > 0) {
+                    term.write([0x08, 0x20, 0x08]);
+                    lineBuffer = lineBuffer.slice(0, lineBuffer.length - 1);
+                }
+                break;
+            default:
+                if (key >= ' ') {
+                    term.write(key);
+                    lineBuffer += key;
+                }
+        }
+    });
+
+    ucl.onContinue = () => {
+        buffer += "\n";
+        lineBuffer = '';
+        term.write(': ');
+    }
+    ucl.onNewCommand = () => {
+        term.write('> ');
+        buffer = '';
+        lineBuffer = '';
+    }
+    ucl.onOutLine = (line) => { term.writeln(line); }
+    ucl.onError = (err) => { term.writeln('error: ' + err); }
+}
+
+const go = new Go();
+WebAssembly.instantiateStreaming(fetch("/playwasm.wasm"), go.importObject)
+    .then((result) => {
+        go.run(result.instance);
+        startSession(term);
+    });