Add helper.ts #78
Add helper.ts #78
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WalkthroughA new TypeScript helper module was introduced, providing five utility functions: string formatting, array summing, email validation, function debouncing, and array chunking. All functions are exported for use in other modules. 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)
Impact AnalysisNew helper utilities added to public APIℹ️ Low 🔗 Impacts API Introduces five new exported utility functions—formatString, calculateSum, isValidEmail, debounce, and chunk—that expand the library’s API surface without altering any existing behavior. Verify each function’s implementation for correctness, naming consistency, and type safety; review the email regex for adequate coverage and ensure debounce manages timers as expected. Add unit tests covering edge cases: empty and whitespace-only strings for formatString; negative, large, and empty arrays for calculateSum; valid/invalid formats for isValidEmail; timing behavior and rapid-invoke scenarios for debounce; and varied array lengths, sizes, and empty inputs for chunk. 🔍 Related Files
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Actionable comments posted: 1
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📒 Files selected for processing (1)
helper.ts(1 hunks)
🧰 Additional context used
🔍 MCP Research (2 servers)
Linear:
- Issue ENG-2040 specifies the need to add some TypeScript helper functions in a file called helper.ts. It explicitly states that the file should NOT include the calculateSum function because it already exists elsewhere in the codebase. This is directly relevant to reviewing the helper.ts changes in the PR. (Issue ENG-2040: https://linear.app/coderabbit/issue/ENG-2040/add-typescript-helper-functions)
Notion:
- Document "Add TypeScript helper functions" states that some TypeScript helper functions need to be added in a file called helper.ts, but the file should NOT include the function calculateSum because it already exists elsewhere in the codebase. (Page ID: 23496e76-cda1-80cf-ac92-c22f78edd65b)
🔇 Additional comments (4)
helper.ts (4)
1-3: LGTM!The string formatting implementation is correct and follows common patterns for creating URL-friendly slugs.
9-12: Basic email validation is appropriate for most use cases.The regex pattern provides reasonable basic email validation. For more rigorous validation, consider using a dedicated email validation library if needed.
14-23: Well-implemented debounce function with proper TypeScript generics.The implementation correctly handles timeout management and provides excellent type safety. Consider using
numberinstead ofNodeJS.Timeoutif this code needs to run in browser environments.
25-31: Efficient and well-typed chunk implementation.The function correctly splits arrays into chunks using an efficient slice-based approach with proper generic typing.
| export function calculateSum(numbers: number[]): number { | ||
| return numbers.reduce((acc, num) => acc + num, 0); | ||
| } |
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Remove calculateSum function - violates documented constraints.
The calculateSum function should NOT be included in this file according to Linear issue ENG-2040 and Notion documentation, which explicitly state that this function already exists elsewhere in the codebase.
-export function calculateSum(numbers: number[]): number {
- return numbers.reduce((acc, num) => acc + num, 0);
-}📝 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 calculateSum(numbers: number[]): number { | |
| return numbers.reduce((acc, num) => acc + num, 0); | |
| } |
🤖 Prompt for AI Agents
In helper.ts around lines 5 to 7, remove the entire calculateSum function as it
violates the documented constraints in ENG-2040 and Notion documentation, which
specify that this function already exists elsewhere in the codebase and should
not be duplicated here.
Summary by CodeRabbit