Add ErrorBoundary, and wrap HelpContent with it

src/qqq/components/misc/ErrorBoundary.tsx

@@ -0,0 +1,74 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2024.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import React, {Component, ErrorInfo} from "react";
+
+interface Props
+{
+   errorElement?: React.ReactNode;
+   children: React.ReactNode;
+}
+
+interface State
+{
+   hasError: boolean;
+}
+
+/*******************************************************************************
+ ** Component that you can wrap around other components that might throw an error,
+ ** to give some isolation, rather than breaking a whole page.
+ ** Credit: https://medium.com/@bobjunior542/how-to-use-error-boundaries-in-react-js-with-typescript-ee90ec814bf1
+ *******************************************************************************/
+class ErrorBoundary extends Component<Props, State>
+{
+   /***************************************************************************
+    *
+    ***************************************************************************/
+   constructor(props: Props)
+   {
+      super(props);
+      this.state = {hasError: false};
+   }
+
+   /***************************************************************************
+    *
+    ***************************************************************************/
+   componentDidCatch(error: Error, errorInfo: ErrorInfo)
+   {
+      console.error("ErrorBoundary caught an error: ", error, errorInfo);
+      this.setState({hasError: true});
+   }
+
+   /***************************************************************************
+    *
+    ***************************************************************************/
+   render()
+   {
+      if (this.state.hasError)
+      {
+         return this.props.errorElement ?? <span>(Error)</span>;
+      }
+
+      return this.props.children;
+   }
+}
+
+export default ErrorBoundary;

src/qqq/components/misc/HelpContent.tsx

@@ -22,6 +22,7 @@
 import {QHelpContent} from "@kingsrook/qqq-frontend-core/lib/model/metaData/QHelpContent";
 import Box from "@mui/material/Box";
 import parse from "html-react-parser";
+import ErrorBoundary from "qqq/components/misc/ErrorBoundary";
 import React, {useContext} from "react";
 import Markdown from "react-markdown";
 import QContext from "QContext";
@@ -128,6 +129,7 @@ function HelpContent({helpContents, roles, heading, helpContentKey}: Props): JSX
    let selectedHelpContent = getMatchingHelpContent(helpContentsArray, roles);
 
    let content = null;
+   let errorContent = "Error rendering help content.";
    if (helpHelpActive)
    {
       if (!selectedHelpContent)
@@ -135,6 +137,7 @@ function HelpContent({helpContents, roles, heading, helpContentKey}: Props): JSX
          selectedHelpContent = new QHelpContent({content: ""});
       }
       content = selectedHelpContent.content + ` [${helpContentKey ?? "?"}]`;
+      errorContent += ` [${helpContentKey ?? "?"}]`;
    }
    else if(selectedHelpContent)
    {
@@ -148,7 +151,9 @@ function HelpContent({helpContents, roles, heading, helpContentKey}: Props): JSX
    {
       return <Box display="inline" className="helpContent">
          {heading && <span className="header">{heading}</span>}
-         {formatHelpContent(content, selectedHelpContent.format)}
+         <ErrorBoundary errorElement={<i>{errorContent}</i>}>
+            {formatHelpContent(content, selectedHelpContent.format)}
+         </ErrorBoundary>
       </Box>;
    }