ScrollArea Component [Draft] #565
Conversation
WalkthroughA new Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant ScrollArea
participant ScrollAreaRoot
participant ScrollAreaViewport
participant ScrollAreaScrollBar
participant ScrollAreaThumb
User->>ScrollArea: Interacts with scrollable area
ScrollArea->>ScrollAreaRoot: Render children and setup context
ScrollAreaRoot->>ScrollAreaViewport: Render viewport
ScrollAreaRoot->>ScrollAreaScrollBar: Render scrollbar
ScrollAreaScrollBar->>ScrollAreaThumb: Render thumb
ScrollAreaViewport->>ScrollAreaContext: Update scroll position
ScrollAreaScrollBar->>ScrollAreaThumb: Adjust thumb position
Warning There were issues while running some tools. Please review the errors and either fix the tool’s configuration or disable the tool if it’s a critical failure. 🔧 eslint
src/components/ui/ScrollArea/fragments/ScrollAreaRoot.tsxOops! Something went wrong! :( ESLint: 8.56.0 Error: Failed to load parser '@babel/eslint-parser' declared in '.eslintrc.cjs': Cannot find module '@babel/core/package.json'
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## main #565 +/- ##
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- Coverage 92.30% 92.10% -0.21%
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Lines 65 76 +11
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Actionable comments posted: 20
🧹 Outside diff range and nitpick comments (9)
src/components/ui/ScrollArea/fragments/ScrollAreaScrollBar.tsx (1)
5-6: Enhance context usage for scrollbar functionalityThe current context usage is limited to styling. Consider extending the context to include essential scrollbar state and behavior:
- Viewport scroll position
- Content size
- Viewport size
- Scroll updates
Example context structure:
interface ScrollAreaContextType { rootClass: string; scrollPosition: { x: number; y: number }; viewportSize: { width: number; height: number }; contentSize: { width: number; height: number }; onScroll: (position: { x: number; y: number }) => void; }src/components/ui/ScrollArea/fragments/ScrollAreaThumb.tsx (1)
12-13: Use a CSS class management libraryConsider using a CSS class management library like
clsxorclassnamesfor more robust class name handling.+import clsx from 'clsx'; + - const scrollBarClass = `${rootClass}-scroll-bar`; - const scrollThumbClass = `${scrollBarClass}-thumb`; + const scrollThumbClass = clsx( + `${rootClass}-scroll-bar-thumb`, + orientation === 'vertical' ? 'vertical' : 'horizontal', + className + );styles/themes/components/scroll-area.scss (2)
9-20: Consider making the layout direction configurable.The viewport enforces a column layout which might not suit all use cases.
Consider making the flex direction configurable:
.rad-ui-scroll-area-viewport { overflow: scroll; scrollbar-width: none; display: flex; - flex-direction: column; + flex-direction: var(--rad-scroll-area-direction, column); height: 100%; ::-webkit-scrollbar { display: none; } }
1-42: Consider these architectural improvements for the ScrollArea component.
Support horizontal scrolling:
- Add styles for horizontal orientation
- Consider supporting both directions simultaneously
Enhance accessibility:
- Add ARIA roles and attributes in the component
- Support RTL layouts
- Add keyboard navigation
Add documentation:
- Document available CSS variables
- Provide usage examples
- Document accessibility features
Would you like me to provide specific implementation details for any of these improvements?
src/components/ui/ScrollArea/fragments/ScrollAreaViewport.tsx (1)
9-14: Remove commented console.log and consider performance optimization.
- Remove the commented console.log statement
- Consider debouncing the scroll handler to improve performance
+import { useCallback } from 'react'; +import { debounce } from '~/utils/debounce'; // Assuming you have a debounce utility const ScrollAreaViewport = ({ children, ...props }: any) => { const { rootClass, setVerticalScrollBarPosition } = useContext(ScrollAreaContext); const viewportClass = `${rootClass}-viewport`; - const handleScroll = (event: React.UIEvent<HTMLDivElement>) => { + const handleScroll = useCallback( + debounce((event: React.UIEvent<HTMLDivElement>) => { const scrollPercentage = event.currentTarget.scrollTop / (event.currentTarget.scrollHeight - event.currentTarget.clientHeight); - // console.log('scrollPercentage', scrollPercentage); setVerticalScrollBarPosition(scrollPercentage); - }; + }, 16), + [setVerticalScrollBarPosition] + );styles/themes/default.scss (1)
Line range hint
29-69: Consider cleaning up unused codeThe file contains commented-out code and empty selectors that could be removed to improve maintainability:
- Commented focus styles (lines 29-34)
- Empty
.rad-ui-tooltipselector- Empty
.rad-ui-tooltip-reference-elementselector- Commented max-width in
.rad-ui-popper- // button:active, button:focus, input:active, input:focus, textarea:active, textarea:focus,a:focus { - outline: 1px solid var(--rad-ui-color-accent-300); - outline-style:groove; - /* outline:0 none; */ - } ::selection{ background-color: var(--rad-ui-color-accent-300); color: var(--rad-ui-color-accent-950); } -.rad-ui-tooltip{ - -} -.rad-ui-tooltip-reference-element{ - -} .rad-ui-tooltip-floating-element{ background-color:var(--rad-ui-color-gray-1000); color: var(--rad-ui-color-gray-100); padding: 4px 12px; border-radius: 8px; } .rad-ui-arrow{ fill: var(--rad-ui-color-gray-1000); } .rad-ui-popper{ - // max-width: calc(100vw - 10px); }src/components/ui/ScrollArea/fragments/ScrollAreaRoot.tsx (3)
10-12: Consider consolidating scroll-related stateMultiple
useStatehooks for related scroll state can make state management harder to maintain. Consider using a single state object for scroll-related values.-const [verticalScrollBarHeight, setVerticalScrollBarHeight] = useState(0); -const [verticalScrollBarPosition, setVerticalScrollBarPosition] = useState(0); +const [scrollState, setScrollState] = useState({ + height: 0, + position: 0 +});
34-34: Memoize context values to prevent unnecessary re-rendersThe context values object is recreated on every render. Consider using useMemo to optimize performance.
-const values = { isHovered, setIsHovered, rootClass, verticalScrollBarHeight, verticalScrollBarPosition, setVerticalScrollBarPosition }; +const values = useMemo(() => ({ + isHovered, + setIsHovered, + rootClass, + verticalScrollBarHeight, + verticalScrollBarPosition, + setVerticalScrollBarPosition +}), [isHovered, rootClass, verticalScrollBarHeight, verticalScrollBarPosition]);
1-45: Consider performance optimizations for large contentFor better performance and user experience, consider these architectural improvements:
- Add ResizeObserver to handle dynamic content changes
- Consider implementing virtualization for large scrollable content
- Add support for horizontal scrolling
- Implement scroll position restoration
Would you like me to provide example implementations for any of these suggestions?
📜 Review details
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Review profile: CHILL
📒 Files selected for processing (9)
src/components/ui/ScrollArea/ScrollArea.tsx(1 hunks)src/components/ui/ScrollArea/contexts/ScrollAreaContext.tsx(1 hunks)src/components/ui/ScrollArea/fragments/ScrollAreaRoot.tsx(1 hunks)src/components/ui/ScrollArea/fragments/ScrollAreaScrollBar.tsx(1 hunks)src/components/ui/ScrollArea/fragments/ScrollAreaThumb.tsx(1 hunks)src/components/ui/ScrollArea/fragments/ScrollAreaViewport.tsx(1 hunks)src/components/ui/ScrollArea/stories/ScrollArea.stories.tsx(1 hunks)styles/themes/components/scroll-area.scss(1 hunks)styles/themes/default.scss(1 hunks)
✅ Files skipped from review due to trivial changes (2)
- src/components/ui/ScrollArea/contexts/ScrollAreaContext.tsx
- src/components/ui/ScrollArea/stories/ScrollArea.stories.tsx
🔇 Additional comments (5)
src/components/ui/ScrollArea/ScrollArea.tsx (2)
1-6: LGTM: Imports are well-organized and properly separated.
The imports are logically grouped with React first, followed by component fragments.
17-17: LGTM: Export statement is correct.
The default export is appropriate for this component.
src/components/ui/ScrollArea/fragments/ScrollAreaViewport.tsx (2)
1-3: LGTM! Clean and necessary imports.
The imports are well-organized and all are being utilized in the component.
1-19: Verify error handling and integration with ScrollArea component.
The component should be wrapped with proper error boundaries and verify its integration with the parent ScrollArea component.
styles/themes/default.scss (1)
24-24: LGTM! Import follows consistent pattern
The new scroll-area import maintains the established file organization pattern and alphabetical ordering.
| import React, { useContext } from 'react'; | ||
| import { ScrollAreaContext } from '../contexts/ScrollAreaContext'; | ||
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| const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: any) => { |
There was a problem hiding this comment.
Add proper TypeScript types for component props
The use of any type defeats the purpose of TypeScript's type safety. Define a proper interface for the component props.
-const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: any) => {
+interface ScrollAreaScrollBarProps {
+ orientation?: 'vertical' | 'horizontal';
+ children?: React.ReactNode;
+}
+
+const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: ScrollAreaScrollBarProps) => {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: any) => { | |
| interface ScrollAreaScrollBarProps { | |
| orientation?: 'vertical' | 'horizontal'; | |
| children?: React.ReactNode; | |
| } | |
| const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: ScrollAreaScrollBarProps) => { |
| return <div className={scrollBarClass}> | ||
| {children} | ||
| </div>; |
There was a problem hiding this comment.
Enhance scrollbar implementation with proper ARIA attributes and functionality
The current implementation lacks essential scrollbar features:
- Missing ARIA attributes for accessibility
- No scroll thumb positioning logic
- No scroll event handling
- No drag functionality
- return <div className={scrollBarClass}>
+ return <div
+ role="scrollbar"
+ aria-orientation={orientation}
+ aria-controls="viewport"
+ className={scrollBarClass}
+ data-orientation={orientation}
+ >
{children}
</div>;Consider implementing:
- Scroll position calculation and updates
- Drag event handlers for the scrollbar
- Integration with the viewport's scroll position
- Proper dimension calculations based on orientation
Committable suggestion skipped: line range outside the PR's diff.
| const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: any) => { | ||
| const { rootClass } = useContext(ScrollAreaContext); | ||
| const scrollBarClass = `${rootClass}-scroll-bar`; | ||
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| return <div className={scrollBarClass}> | ||
| {children} | ||
| </div>; | ||
| }; |
There was a problem hiding this comment.
💡 Codebase verification
The orientation prop should affect the scrollbar's positioning and dimensions
The orientation prop is indeed unused but should be implemented to control the scrollbar's layout:
- For 'vertical' orientation: the scrollbar should be positioned on the right with a fixed width
- For 'horizontal' orientation: the scrollbar should be positioned at the bottom with a fixed height
Current implementation in scroll-area.scss only handles vertical scrollbar styling:
- Fixed right positioning:
right: 0 - Fixed width:
width: 10px
🔗 Analysis chain
The orientation prop is defined but unused
The orientation prop is currently not affecting the component's behavior or styling. Either remove it if not needed or implement the necessary orientation-specific logic.
🏁 Scripts executed
The following scripts were executed for the analysis:
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#!/bin/bash
# Check if orientation is used in related style files
rg -l "scroll-bar.*vertical|scroll-bar.*horizontal" --type scss
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#!/bin/bash
# Let's check for any CSS/SCSS/styled-components files with scroll-bar related styles
rg -l "scroll-bar.*vertical|scroll-bar.*horizontal"
# Also check if orientation is used in the component's implementation or related files
rg -l "orientation.*scroll.*bar"
# Let's also look for any ScrollArea related style files
fd -e css -e scss -e less -e styled.ts -e styles.ts "scroll"
Length of output: 191
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#!/bin/bash
# Let's check the content of the scroll-area style file
cat styles/themes/components/scroll-area.scss
# Let's also check if orientation is used in any ScrollArea related components
rg -g "*.tsx" -g "*.ts" "orientation.*scroll" -A 2 -B 2
Length of output: 896
| import React, { useContext } from 'react'; | ||
| import { ScrollAreaContext } from '../contexts/ScrollAreaContext'; | ||
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| const ScrollAreaScrollBar = ({ orientation = 'vertical', children }: any) => { | ||
| const { rootClass } = useContext(ScrollAreaContext); | ||
| const scrollBarClass = `${rootClass}-scroll-bar`; | ||
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| return <div className={scrollBarClass}> | ||
| {children} | ||
| </div>; | ||
| }; | ||
|
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| export default ScrollAreaScrollBar; |
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💡 Codebase verification
Component implementation follows established patterns with minor improvements needed
The implementation aligns with the codebase patterns but needs a few adjustments to match the sibling components:
- Add
orientationto the destructured context values since it's used by ScrollAreaThumb - Consider using
Primitive.divinstead of plaindivfor consistency with ScrollAreaViewport - Remove unused
orientationprop as it's not being passed to the context - Add proper TypeScript types instead of using
any
🔗 Analysis chain
Verify component implementation against established patterns
Let's ensure this implementation aligns with other UI components in the codebase.
🏁 Scripts executed
The following scripts were executed for the analysis:
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#!/bin/bash
# Check for similar component patterns
echo "Checking component patterns..."
ast-grep --pattern 'const $_ = ({ $$ }: any) => {
const { rootClass } = useContext($_);
$$$
}'
# Check for context usage patterns
echo "Checking context usage patterns..."
rg -A 5 "useContext\(.*Context\)" --type typescript
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echo "Checking class naming patterns..."
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# Let's examine the content of related ScrollArea components
echo "Content of ScrollAreaRoot.tsx:"
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echo -e "\nContent of ScrollAreaThumb.tsx:"
cat src/components/ui/ScrollArea/fragments/ScrollAreaThumb.tsx
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| const ScrollArea = ({ children, ...props }: any) => { | ||
| return <ScrollAreaRoot {...props}> | ||
| <ScrollAreaViewport>{children}</ScrollAreaViewport> | ||
| <ScrollAreaScrollBar> | ||
| <ScrollAreaThumb /> | ||
| </ScrollAreaScrollBar> | ||
| </ScrollAreaRoot>; | ||
| }; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve type safety and add proper interface definitions.
The component uses any type which bypasses TypeScript's type checking benefits. Consider defining a proper interface for the component's props.
Here's a suggested implementation with proper typing:
-const ScrollArea = ({ children, ...props }: any) => {
+interface ScrollAreaProps extends React.HTMLAttributes<HTMLDivElement> {
+ children: React.ReactNode;
+}
+
+const ScrollArea = ({ children, ...props }: ScrollAreaProps) => {Additionally, consider adding these accessibility and usability improvements:
- Add ARIA attributes for better screen reader support
- Consider adding keyboard navigation support
- Add documentation for the component's props and usage
Would you like me to provide a more detailed implementation with these improvements?
Committable suggestion skipped: line range outside the PR's diff.
💡 Codebase verification
ScrollArea implementation needs improvements for basic functionality
The current implementation has several limitations and issues:
- Horizontal scrolling is only partially implemented (orientation prop exists but not fully utilized)
- Scroll thumb positioning logic is incomplete and may not work correctly
- No proper RTL support found
- Basic scroll event handling exists but without customization options
- Scrollbar visibility control is limited to a 2-second timeout
Key issues to address:
ScrollAreaThumb.tsx: Thumb positioning only considers vertical position, missing horizontal supportScrollAreaRoot.tsx: Visibility control is hardcoded to 2 seconds without customizationScrollAreaScrollBar.tsx: Orientation prop is accepted but not properly utilized in the layout- Missing proper type definitions, using
anytype extensively
🔗 Analysis chain
Verify scroll behavior implementation.
The current implementation might need additional features commonly expected in scroll areas:
- Horizontal scrolling support
- Custom scrollbar visibility
- Scroll event handling
- RTL support
Let's check if these features are implemented in the fragment components:
Let me check the actual implementations to verify these features more thoroughly.
🏁 Scripts executed
The following scripts were executed for the analysis:
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#!/bin/bash
# Description: Check implementation details of scroll area fragments
# Check for horizontal scroll support
echo "Checking horizontal scroll support..."
rg -l "horizontal|orientation" src/components/ui/ScrollArea/fragments/
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echo "Checking RTL support..."
rg -l "direction|rtl" src/components/ui/ScrollArea/fragments/
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# Check ScrollAreaRoot for visibility control
echo -e "\n=== ScrollAreaRoot.tsx ==="
cat src/components/ui/ScrollArea/fragments/ScrollAreaRoot.tsx
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cat src/components/ui/ScrollArea/fragments/ScrollAreaThumb.tsx
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| setVerticalScrollBarPosition(scrollPercentage); | ||
| }; | ||
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| return <Primitive.div {...props} className={viewportClass} style={{}} onScroll={handleScroll}>{children}</Primitive.div>; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Remove empty style object and add accessibility attributes.
The empty style object is unnecessary, and the component should have proper ARIA attributes for accessibility.
- return <Primitive.div {...props} className={viewportClass} style={{}} onScroll={handleScroll}>{children}</Primitive.div>;
+ return (
+ <Primitive.div
+ {...props}
+ className={viewportClass}
+ onScroll={handleScroll}
+ role="region"
+ aria-label="Scrollable content"
+ tabIndex={0}
+ >
+ {children}
+ </Primitive.div>
+ );📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| return <Primitive.div {...props} className={viewportClass} style={{}} onScroll={handleScroll}>{children}</Primitive.div>; | |
| return ( | |
| <Primitive.div | |
| {...props} | |
| className={viewportClass} | |
| onScroll={handleScroll} | |
| role="region" | |
| aria-label="Scrollable content" | |
| tabIndex={0} | |
| > | |
| {children} | |
| </Primitive.div> | |
| ); |
|
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| const COMPONENT_NAME = 'ScrollArea'; | ||
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| const ScrollAreaRoot = ({ children, customRootClass, ...props }: any) => { |
There was a problem hiding this comment.
Define proper TypeScript interfaces for component props
Using any type reduces type safety and defeats the purpose of using TypeScript. Consider defining a proper interface for the component props.
+interface ScrollAreaRootProps extends React.HTMLAttributes<HTMLDivElement> {
+ children: React.ReactNode;
+ customRootClass?: string;
+}
-const ScrollAreaRoot = ({ children, customRootClass, ...props }: any) => {
+const ScrollAreaRoot = ({ children, customRootClass, ...props }: ScrollAreaRootProps) => {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const ScrollAreaRoot = ({ children, customRootClass, ...props }: any) => { | |
| interface ScrollAreaRootProps extends React.HTMLAttributes<HTMLDivElement> { | |
| children: React.ReactNode; | |
| customRootClass?: string; | |
| } | |
| const ScrollAreaRoot = ({ children, customRootClass, ...props }: ScrollAreaRootProps) => { |
| useEffect(() => { | ||
| if (scrollBarRef.current) { | ||
| setVerticalScrollBarHeight(scrollBarRef.current.clientHeight); | ||
| setVerticalScrollBarPosition(scrollBarRef.current.offsetTop); | ||
| } | ||
| }, [verticalScrollBarHeight, verticalScrollBarPosition]); |
There was a problem hiding this comment.
Fix useEffect dependencies to prevent infinite loops
The effect's dependency array includes the same values that are being set within the effect, which could cause infinite re-renders.
-}, [verticalScrollBarHeight, verticalScrollBarPosition]);
+}, []);📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| useEffect(() => { | |
| if (scrollBarRef.current) { | |
| setVerticalScrollBarHeight(scrollBarRef.current.clientHeight); | |
| setVerticalScrollBarPosition(scrollBarRef.current.offsetTop); | |
| } | |
| }, [verticalScrollBarHeight, verticalScrollBarPosition]); | |
| useEffect(() => { | |
| if (scrollBarRef.current) { | |
| setVerticalScrollBarHeight(scrollBarRef.current.clientHeight); | |
| setVerticalScrollBarPosition(scrollBarRef.current.offsetTop); | |
| } | |
| }, []); |
| const handleBlur = () => { | ||
| // 2 sec delay | ||
| setTimeout(() => { | ||
| setIsHovered(false); | ||
| }, 2000); | ||
| }; |
There was a problem hiding this comment.
Clean up setTimeout on component unmount
The setTimeout in handleBlur should be cleaned up to prevent memory leaks and potential state updates after component unmount.
const handleBlur = () => {
- setTimeout(() => {
+ const timer = setTimeout(() => {
setIsHovered(false);
}, 2000);
+ return () => clearTimeout(timer);
};Committable suggestion skipped: line range outside the PR's diff.
|
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| return ( | ||
| <ScrollAreaContext.Provider value={values}> | ||
| <div ref={scrollBarRef} className={rootClass} onFocus={handleFocus} onBlur={handleBlur} {...props}>{children}</div> |
There was a problem hiding this comment.
💡 Codebase verification
Props spreading should be replaced with explicit props
The component is using type any and spreading unknown props directly onto a DOM element, which could indeed lead to security issues. The component only explicitly needs:
childrencustomRootClassref(via scrollBarRef)classNameonFocusonBlur
These should be explicitly declared in a proper interface and passed directly instead of using spread.
src/components/ui/ScrollArea/fragments/ScrollAreaRoot.tsx: Replace{...props}with explicit props and create a proper interface for the component props instead of usingany
🔗 Analysis chain
Restrict prop spreading for better security
Spreading unknown props directly onto a DOM element could lead to security vulnerabilities. Consider explicitly passing only the necessary props.
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fd -e ts -e tsx types ScrollArea
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rg -l '@radix-ui/react-scroll-area'
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This PR adds Scrollarea component - is a work in progress, Requesting for comments
Current state -
The implementation somewhat works, but its pretty bad in terms of performance and isn't suitable for production in any form. Needs more research to make it more performant
Summary by CodeRabbit
Summary by CodeRabbit
Release Notes
New Features
ScrollAreacomponent for enhanced scrollable areas within the user interface.ScrollAreaRoot,ScrollAreaViewport,ScrollAreaScrollBar, andScrollAreaThumbfor better functionality and user experience.Styles
Documentation
ScrollAreacomponent to facilitate interactive testing and visualization.