refactor(repo): promote tauri app to repository root

src/ErrorBoundary.tsx

@@ -0,0 +1,43 @@
+import { Component, ErrorInfo, ReactNode } from "react";
+
+interface Props {
+  children?: ReactNode;
+}
+
+interface State {
+  hasError: boolean;
+  error: Error | null;
+  errorInfo: ErrorInfo | null;
+}
+
+export class ErrorBoundary extends Component<Props, State> {
+  public state: State = {
+    hasError: false,
+    error: null,
+    errorInfo: null
+  };
+
+  public static getDerivedStateFromError(error: Error): State {
+    return { hasError: true, error, errorInfo: null };
+  }
+
+  public componentDidCatch(error: Error, errorInfo: ErrorInfo) {
+    console.error("Uncaught error:", error, errorInfo);
+    this.setState({ errorInfo });
+  }
+
+  public render() {
+    if (this.state.hasError) {
+      return (
+        <div style={{ padding: '2rem', color: 'red', backgroundColor: '#222', height: '100vh', width: '100vw', whiteSpace: 'pre-wrap', overflow: 'auto' }}>
+          <h1>Something went wrong.</h1>
+          <p>{this.state.error?.toString()}</p>
+          <hr />
+          <p>{this.state.errorInfo?.componentStack}</p>
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}