Invoke command after shell change, support local dev

README.md

@@ -15,3 +15,11 @@ JupyterLite is being tested against modern web browsers:
 
 - Firefox 90+
 - Chromium 89+
+
+## Developing locally:
+
+```
+pip install -r requirements.txt
+jupyter lite build --contents content && jupyter lite serve
+open http://127.0.0.1:8000/files/demo-dev.html
+```

content/demo-dev.html

@@ -149,7 +149,8 @@ <h2>AI Assurance Portal</h2>
           cleanCode += line.substring(indent) + '\n';
         }
         codeEl.textContent = cleanCode;
-        iframe.src = `https://quansight.github.io/jupyterlite-demo/repl/index.html?kernel=python&toolbar=1`;
+        const baseURL = location.href.split('/').slice(0, -2).join('/');
+        iframe.src = baseURL + `/repl/index.html?kernel=python&toolbar=1`;
         iframe.style.width = '100%';
         const wrapper = document.createElement('div');
         wrapper.classList.add('code-wrapper');
@@ -164,6 +165,8 @@ <h2>AI Assurance Portal</h2>
             jupyter.restored.then(() => {
               codeEl.style.display = 'none';
               iframe.style.display = 'block';
+            });
+            jupyter.shell.currentChanged.connect((shell, change) => {
               jupyter.commands.execute('console:replace-selection', {text: cleanCode});
             });
           } else {