feat: add React Error Boundary to prevent UI white-screen crashes#49

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Merged
op7418 merged 1 commit into from
Feb 26, 2026
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feat: add React Error Boundary to prevent UI white-screen crashes #49

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31 changes: 21 additions & 10 deletions src/components/layout/AppShell.tsx
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
hasUpdate={updateInfo?.updateAvailable ?? false}
skipPermissionsActive={skipPermissionsActive}
/>
<ChatListPanel open={chatListOpen} width={chatListWidth} />
<ErrorBoundary>
<ChatListPanel open={chatListOpen} width={chatListWidth} />
</ErrorBoundary>
{chatListOpen && (
<ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
)}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
className="h-11 w-full shrink-0"
style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
/>
<main className="relative flex-1 overflow-hidden">{children}</main>
<main className="relative flex-1 overflow-hidden">
<ErrorBoundary>{children}</ErrorBoundary>
</main>
</div>
{isChatDetailRoute && previewFile && (
<ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
)}
{isChatDetailRoute && previewFile && (
<DocPreview
filePath={previewFile}
viewMode={previewViewMode}
onViewModeChange={setPreviewViewMode}
onClose={() => setPreviewFile(null)}
width={docPreviewWidth}
/>
<ErrorBoundary>
<DocPreview
filePath={previewFile}
viewMode={previewViewMode}
onViewModeChange={setPreviewViewMode}
onClose={() => setPreviewFile(null)}
width={docPreviewWidth}
/>
</ErrorBoundary>
)}
{isChatDetailRoute && panelOpen && (
<ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
)}
{isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
{isChatDetailRoute && (
<ErrorBoundary>
<RightPanel width={rightPanelWidth} />
</ErrorBoundary>
)}
</div>
<UpdateDialog />
</TooltipProvider>
Expand Down
134 changes: 134 additions & 0 deletions src/components/layout/ErrorBoundary.tsx
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
children: React.ReactNode;
fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
hasError: boolean;
error: Error | null;
showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
ErrorBoundaryProps,
ErrorBoundaryState
> {
constructor(props: ErrorBoundaryProps) {
super(props);
this.state = { hasError: false, error: null, showDetails: false };
}

static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
return { hasError: true, error };
}

componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
console.error("[ErrorBoundary] Uncaught error:", error);
console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
}

handleReset = () => {
this.setState({ hasError: false, error: null, showDetails: false });
};

handleReload = () => {
window.location.reload();
};

render() {
if (this.state.hasError) {
if (this.props.fallback) {
return this.props.fallback;
}

return (
<div className="flex h-full w-full items-center justify-center bg-background p-8">
<div className="flex max-w-md flex-col items-center gap-4 text-center">
{/* Error icon */}
<div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
<svg
xmlns="http://www.w3.org/2000/svg"
width="24"
height="24"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
strokeWidth="2"
strokeLinecap="round"
strokeLinejoin="round"
>
<circle cx="12" cy="12" r="10" />
<line x1="12" y1="8" x2="12" y2="12" />
<line x1="12" y1="16" x2="12.01" y2="16" />
</svg>
</div>

<h2 className="text-lg font-semibold text-foreground">
Something went wrong
</h2>
<p className="text-sm text-muted-foreground">
An unexpected error occurred. You can try again or reload the app.
</p>

{/* Expandable error details */}
{this.state.error && (
<button
onClick={() =>
this.setState((s) => ({ showDetails: !s.showDetails }))
}
className="text-xs text-muted-foreground underline hover:text-foreground"
>
{this.state.showDetails ? "Hide details" : "Show details"}
</button>
)}
{this.state.showDetails && this.state.error && (
<pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
{this.state.error.message}
{this.state.error.stack && `\n\n${this.state.error.stack}`}
</pre>
)}

{/* Action buttons */}
<div className="flex gap-2">
<button
onClick={this.handleReset}
className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
>
Try Again
</button>
<button
onClick={this.handleReload}
className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
>
Reload App
</button>
</div>
</div>
</div>
);
}

return this.props.children;
}
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
Component: React.ComponentType<P>,
fallback?: React.ReactNode
) {
const displayName = Component.displayName || Component.name || "Component";

const Wrapped = (props: P) => (
<ErrorBoundary fallback={fallback}>
<Component {...props} />
</ErrorBoundary>
);

Wrapped.displayName = `withErrorBoundary(${displayName})`;
return Wrapped;
}
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
feat: add React Error Boundary to prevent UI white-screen crashes#49

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Sign in
to your account

 Merged

op7418
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat: add React Error Boundary to prevent UI white-screen crashes#49

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

op7418
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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feat: add React Error Boundary to prevent UI white-screen crashes#49

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Feb 26, 2026
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feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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feat: add React Error Boundary to prevent UI white-screen crashes#49

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 Merged

op7418
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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feat: add React Error Boundary to prevent UI white-screen crashes#49

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 Merged

op7418
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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feat: add React Error Boundary to prevent UI white-screen crashes#49

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op7418
merged 1 commit into

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Feb 26, 2026
 Merged


feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
feat: add React Error Boundary to prevent UI white-screen crashes#49

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
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to your account

 Merged

op7418
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add React Error Boundary to prevent UI white-screen crashes
#49
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31 changes: 21 additions & 10 deletions
src/components/layout/AppShell.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -11,6 +11,7 @@ import { UpdateDialog } from "./UpdateDialog";
import { DocPreview } from "./DocPreview";
import { PanelContext, type PanelContent, type PreviewViewMode } from "@/hooks/usePanel";
import { UpdateContext, type UpdateInfo } from "@/hooks/useUpdate";
import { ErrorBoundary } from "./ErrorBoundary";

const CHATLIST_MIN = 180;
const CHATLIST_MAX = 400;
Expand DownExpand Up@@ -253,7 +254,9 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 hasUpdate={updateInfo?.updateAvailable ?? false}
 skipPermissionsActive={skipPermissionsActive}
 />
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 <ErrorBoundary>
 <ChatListPanel open={chatListOpen} width={chatListWidth} />
 </ErrorBoundary>
 {chatListOpen && (
 <ResizeHandle side="left" onResize={handleChatListResize} onResizeEnd={handleChatListResizeEnd} />
 )}
Expand All@@ -263,24 +266,32 @@ export function AppShell({ children }: { children: React.ReactNode }) {
 className="h-11 w-full shrink-0"
 style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}
 />
 <main className="relative flex-1 overflow-hidden">{children}</main>
 <main className="relative flex-1 overflow-hidden">
 <ErrorBoundary>{children}</ErrorBoundary>
 </main>
 </div>
 {isChatDetailRoute && previewFile && (
 <ResizeHandle side="right" onResize={handleDocPreviewResize} onResizeEnd={handleDocPreviewResizeEnd} />
 )}
 {isChatDetailRoute && previewFile && (
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 <ErrorBoundary>
 <DocPreview
 filePath={previewFile}
 viewMode={previewViewMode}
 onViewModeChange={setPreviewViewMode}
 onClose={() => setPreviewFile(null)}
 width={docPreviewWidth}
 />
 </ErrorBoundary>
 )}
 {isChatDetailRoute && panelOpen && (
 <ResizeHandle side="right" onResize={handleRightPanelResize} onResizeEnd={handleRightPanelResizeEnd} />
 )}
 {isChatDetailRoute && <RightPanel width={rightPanelWidth} />}
 {isChatDetailRoute && (
 <ErrorBoundary>
 <RightPanel width={rightPanelWidth} />
 </ErrorBoundary>
 )}
 </div>
 <UpdateDialog />
 </TooltipProvider>
Expand Down

134 changes: 134 additions & 0 deletions
src/components/layout/ErrorBoundary.tsx

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
"use client";

import React from "react";

interface ErrorBoundaryProps {
 children: React.ReactNode;
 fallback?: React.ReactNode;
}

interface ErrorBoundaryState {
 hasError: boolean;
 error: Error | null;
 showDetails: boolean;
}

export class ErrorBoundary extends React.Component<
 ErrorBoundaryProps,
 ErrorBoundaryState
> {
 constructor(props: ErrorBoundaryProps) {
 super(props);
 this.state = { hasError: false, error: null, showDetails: false };
 }

 static getDerivedStateFromError(error: Error): Partial<ErrorBoundaryState> {
 return { hasError: true, error };
 }

 componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
 console.error("[ErrorBoundary] Uncaught error:", error);
 console.error("[ErrorBoundary] Component stack:", errorInfo.componentStack);
 }

 handleReset = () => {
 this.setState({ hasError: false, error: null, showDetails: false });
 };

 handleReload = () => {
 window.location.reload();
 };

 render() {
 if (this.state.hasError) {
 if (this.props.fallback) {
 return this.props.fallback;
 }

 return (
 <div className="flex h-full w-full items-center justify-center bg-background p-8">
 <div className="flex max-w-md flex-col items-center gap-4 text-center">
 {/* Error icon */}
 <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive">
 <svg
 xmlns="http://www.w3.org/2000/svg"
 width="24"
 height="24"
 viewBox="0 0 24 24"
 fill="none"
 stroke="currentColor"
 strokeWidth="2"
 strokeLinecap="round"
 strokeLinejoin="round"
 >
 <circle cx="12" cy="12" r="10" />
 <line x1="12" y1="8" x2="12" y2="12" />
 <line x1="12" y1="16" x2="12.01" y2="16" />
 </svg>
 </div>

 <h2 className="text-lg font-semibold text-foreground">
 Something went wrong
 </h2>
 <p className="text-sm text-muted-foreground">
 An unexpected error occurred. You can try again or reload the app.
 </p>

 {/* Expandable error details */}
 {this.state.error && (
 <button
 onClick={() =>
 this.setState((s) => ({ showDetails: !s.showDetails }))
 }
 className="text-xs text-muted-foreground underline hover:text-foreground"
 >
 {this.state.showDetails ? "Hide details" : "Show details"}
 </button>
 )}
 {this.state.showDetails && this.state.error && (
 <pre className="max-h-40 w-full overflow-auto rounded-md border border-border/50 bg-muted/30 p-3 text-left text-xs text-muted-foreground">
 {this.state.error.message}
 {this.state.error.stack && `\n\n${this.state.error.stack}`}
 </pre>
 )}

 {/* Action buttons */}
 <div className="flex gap-2">
 <button
 onClick={this.handleReset}
 className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
 >
 Try Again
 </button>
 <button
 onClick={this.handleReload}
 className="rounded-md border border-border bg-background px-4 py-2 text-sm font-medium text-foreground hover:bg-muted"
 >
 Reload App
 </button>
 </div>
 </div>
 </div>
 );
 }

 return this.props.children;
 }
}

/** Convenience HOC to wrap any component with an ErrorBoundary */
export function withErrorBoundary<P extends object>(
 Component: React.ComponentType<P>,
 fallback?: React.ReactNode
) {
 const displayName = Component.displayName || Component.name || "Component";

 const Wrapped = (props: P) => (
 <ErrorBoundary fallback={fallback}>
 <Component {...props} />
 </ErrorBoundary>
 );

 Wrapped.displayName = `withErrorBoundary(${displayName})`;
 return Wrapped;
}