Add helper.ts #77
Add helper.ts #77
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WalkthroughA new TypeScript helper module named Changes
Sequence Diagram(s)sequenceDiagram
participant Caller
participant HelperModule
Caller->>HelperModule: formatString(input)
HelperModule-->>Caller: formatted string
Caller->>HelperModule: calculateSum(numbers)
HelperModule-->>Caller: sum
Caller->>HelperModule: isValidEmail(email)
HelperModule-->>Caller: boolean
Caller->>HelperModule: debounce(func, delay)
HelperModule-->>Caller: debounced function
Caller->>HelperModule: chunk(array, size)
HelperModule-->>Caller: array of chunks
Estimated code review effort🎯 2 (Simple) | ⏱️ ~7 minutes Poem
Pre-Merge Checks (3 warnings)❌ Failed Checks (3 warnings)
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Actionable comments posted: 1
🧹 Nitpick comments (3)
helper.ts (3)
1-3: Consider adding input validation for robustness.The function logic is correct for basic string slugification. However, consider adding null/undefined checks to prevent runtime errors.
export function formatString(input: string): string { + if (!input) return ''; return input.trim().toLowerCase().replace(/\s+/g, '-'); }
9-12: Consider more comprehensive email validation.The current regex provides basic email format validation but may not catch all edge cases. For production use, consider using a more robust email validation library or implementing additional checks.
Examples of emails that pass but might be questionable:
a@b.c(very short domains)user@domain.(trailing dot)Consider using a library like
validator.jsfor more comprehensive validation if needed.
25-31: Add input validation for edge cases.The chunking logic is correct, but consider adding validation for edge cases to prevent unexpected behavior.
export function chunk<T>(array: T[], size: number): T[][] { + if (size <= 0) throw new Error('Chunk size must be greater than 0'); + if (array.length === 0) return []; const chunks: T[][] = []; for (let i = 0; i < array.length; i += size) { chunks.push(array.slice(i, i + size)); } return chunks; }
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📒 Files selected for processing (1)
helper.ts(1 hunks)
🔇 Additional comments (1)
helper.ts (1)
5-7: LGTM!Clean implementation using reduce with proper initial value. Handles empty arrays correctly and maintains type safety.
| export function debounce<T extends (...args: any[]) => any>( | ||
| func: T, | ||
| delay: number | ||
| ): (...args: Parameters<T>) => void { | ||
| let timeoutId: NodeJS.Timeout; | ||
| return (...args: Parameters<T>) => { | ||
| clearTimeout(timeoutId); | ||
| timeoutId = setTimeout(() => func(...args), delay); | ||
| }; | ||
| } |
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🛠️ Refactor suggestion
Fix timeout initialization and consider return value handling.
Two potential improvements:
- Initialize
timeoutIdto avoid callingclearTimeouton undefined - The debounced function doesn't return the original function's return value, which may be unexpected
export function debounce<T extends (...args: any[]) => any>(
func: T,
delay: number
): (...args: Parameters<T>) => void {
- let timeoutId: NodeJS.Timeout;
+ let timeoutId: NodeJS.Timeout | undefined;
return (...args: Parameters<T>) => {
- clearTimeout(timeoutId);
+ if (timeoutId) clearTimeout(timeoutId);
timeoutId = setTimeout(() => func(...args), delay);
};
}Alternatively, if you need the return value, consider returning a Promise or changing the return type signature.
📝 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.
| export function debounce<T extends (...args: any[]) => any>( | |
| func: T, | |
| delay: number | |
| ): (...args: Parameters<T>) => void { | |
| let timeoutId: NodeJS.Timeout; | |
| return (...args: Parameters<T>) => { | |
| clearTimeout(timeoutId); | |
| timeoutId = setTimeout(() => func(...args), delay); | |
| }; | |
| } | |
| export function debounce<T extends (...args: any[]) => any>( | |
| func: T, | |
| delay: number | |
| ): (...args: Parameters<T>) => void { | |
| let timeoutId: NodeJS.Timeout | undefined; | |
| return (...args: Parameters<T>) => { | |
| if (timeoutId) clearTimeout(timeoutId); | |
| timeoutId = setTimeout(() => func(...args), delay); | |
| }; | |
| } |
🤖 Prompt for AI Agents
In helper.ts around lines 14 to 23, initialize timeoutId to undefined or null
before using it to avoid calling clearTimeout on an uninitialized variable.
Also, update the debounced function to handle and return the original function's
return value properly, either by returning a Promise that resolves with the
function's result or by adjusting the return type signature to reflect the
debounced function's behavior.
Summary by CodeRabbit