🧹 Refactor calculateMostActiveDay to use modern array methods#486
🧹 Refactor calculateMostActiveDay to use modern array methods#486is0692vs wants to merge 1 commit into
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Co-authored-by: is0692vs <135803462+is0692vs@users.noreply.github.com>
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Code Review
This pull request refactors the calculateMostActiveDay function in src/lib/github.ts to use Array.prototype.reduce for accumulating weekday totals and simplifies finding the maximum active day using indexOf. The feedback suggests using a literal array instead of Array(7).fill(0) to ensure strict type inference and improve performance.
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| const weekdayTotals = calendar.reduce((totals, day) => { | ||
| if (day.count > 0) { | ||
| totals[new Date(`${day.date}T00:00:00Z`).getUTCDay()] += day.count; | ||
| } | ||
| const weekday = new Date(`${day.date}T00:00:00Z`).getUTCDay(); | ||
| weekdayTotals[weekday] += day.count; | ||
| } | ||
| return totals; | ||
| }, Array(7).fill(0)); |
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Using Array(7).fill(0) can lead to looser type inference (e.g., any[] in some TypeScript configurations) and carries slight runtime overhead compared to a literal array. Using a literal array [0, 0, 0, 0, 0, 0, 0] is more idiomatic, guarantees strict number[] type inference, and is slightly more performant.
| const weekdayTotals = calendar.reduce((totals, day) => { | |
| if (day.count > 0) { | |
| totals[new Date(`${day.date}T00:00:00Z`).getUTCDay()] += day.count; | |
| } | |
| const weekday = new Date(`${day.date}T00:00:00Z`).getUTCDay(); | |
| weekdayTotals[weekday] += day.count; | |
| } | |
| return totals; | |
| }, Array(7).fill(0)); | |
| const weekdayTotals = calendar.reduce((totals: number[], day: any): number[] => { | |
| if (day.count > 0) { | |
| totals[new Date(day.date + "T00:00:00Z").getUTCDay()] += day.count; | |
| } | |
| return totals; | |
| }, [0, 0, 0, 0, 0, 0, 0]); |
References
- Maintain explicit return types for functions in TypeScript to ensure type safety and API clarity.
Codecov Report✅ All modified and coverable lines are covered by tests. 📢 Thoughts on this report? Let us know! |
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Closing this nonessential array-method rewrite: it changes iteration/allocation style without fixing behavior or demonstrating a measured benefit. |
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🎯 What: Refactored
calculateMostActiveDayinsrc/lib/github.tsto use.reduce()andindexOf()instead of afor...ofloop andfindIndex(). Initialized the array withArray(7).fill(0).💡 Why: Simplifies the function using modern array methods, improving code readability and maintainability without changing its behavior.
✅ Verification: Visually inspected the diff and ran the full test suite to ensure no regressions were introduced.
✨ Result: The code is now more concise and idiomatic.
PR created automatically by Jules for task 3351997965846529172 started by @is0692vs
Greptile Summary
このPRは
calculateMostActiveDayの集計処理を配列メソッド中心に整理しています。reduceに変更。Array(7).fill(0)に変更。indexOfに変更。Confidence Score: 5/5
This looks safe to merge.
Important Files Changed
calculateMostActiveDayの内部集計ロジックがリファクタされ、実際の GitHub contribution calendar 入力では旧動作と同等です。Reviews (1): Last reviewed commit: "refactor: simplify calculateMostActiveDa..." | Re-trigger Greptile