⚡ Bolt: [성능 개선] 초기 로드시 불필요한 DOM 탐색 최적화#39
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OpenCode Review Overview
Pull request overviewOpenCode reviewed the current-head bounded evidence and requested changes before merge. Findings1. P2 i18n.js:330 - Optimization condition needs clarification
SummaryApproval sufficiency: Blocked by P2 maintainability issue. Verification posture: Code inspection + test file validation. Linter/static: Not applicable (unpackaged JS). TDD/regression: New test file added. Coverage: Not applicable. Docstring coverage: Not applicable. DAG: Not applicable. PoC/execution: Verified optimization logic. DDD/domain: Preserved i18n behavior. CDD/context: Maintained security fixes. Similar issues: None found. Claim/concept check: Matches PR description. Standards search: Follows web performance best practices. Compatibility/convention: Preserved accessibility attributes. Breaking-change/backcompat: None. Performance: Reduces DOM thrashing. Developer experience: Optimization logic needs clarification. User experience: Faster initial load for Korean users. Visual/DOM: Preserved rendering logic. Accessibility/i18n: Maintained aria-pressed state. Supply-chain/license: No dependencies changed. Packaging: Unpackaged JS (P2 issue). Security/privacy: Preserved localStorage error handling.
Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_i18n.html"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_i18n.html"]
R2 --> V2["targeted test run"]
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Pull request overview
OpenCode reviewed the current-head bounded evidence and requested changes before merge.
Findings
1. P2 i18n.js:330 - Optimization condition needs clarification
- Problem: The isInitialKo condition combines two concepts (initial load + Korean) in one variable, making future maintenance harder
- Root cause: The condition 'currentLang === null && lang === 'ko'' mixes state initialization check with language check
- Fix: Separate the initial load check from the language check for better maintainability
- Regression test: Verify Korean content still loads correctly without DOM updates on initial load
- Suggested diff: posted in this finding's inline review thread.
Summary
Approval sufficiency: Blocked by P2 maintainability issue. Verification posture: Code inspection + test file validation. Linter/static: Not applicable (unpackaged JS). TDD/regression: New test file added. Coverage: Not applicable. Docstring coverage: Not applicable. DAG: Not applicable. PoC/execution: Verified optimization logic. DDD/domain: Preserved i18n behavior. CDD/context: Maintained security fixes. Similar issues: None found. Claim/concept check: Matches PR description. Standards search: Follows web performance best practices. Compatibility/convention: Preserved accessibility attributes. Breaking-change/backcompat: None. Performance: Reduces DOM thrashing. Developer experience: Optimization logic needs clarification. User experience: Faster initial load for Korean users. Visual/DOM: Preserved rendering logic. Accessibility/i18n: Maintained aria-pressed state. Supply-chain/license: No dependencies changed. Packaging: Unpackaged JS (P2 issue). Security/privacy: Preserved localStorage error handling.
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Result: REQUEST_CHANGES
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Reason: Maintainability issue in optimization logic
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Head SHA:
a0b9a8de3c6c68ce2cc09ed8dada2560d1db773d -
Workflow run: 28453806941
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Workflow attempt: 1
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_i18n.html"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_i18n.html"]
R2 --> V2["targeted test run"]
| ogDesc.setAttribute("content", dict.metaDescription); | ||
| } | ||
| // ⚡ Bolt: Skip expensive DOM queries and updates if default language (ko) is requested on initial load | ||
| const isInitialKo = currentLang === null && lang === 'ko'; |
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P2 Optimization condition needs clarification
- Location:
i18n.js:330 - Problem: The isInitialKo condition combines two concepts (initial load + Korean) in one variable, making future maintenance harder
- Root cause: The condition 'currentLang === null && lang === 'ko'' mixes state initialization check with language check
- Fix: Separate the initial load check from the language check for better maintainability
- Regression test: Verify Korean content still loads correctly without DOM updates on initial load
Suggested diff
@@ -327,7 +327,8 @@ function setLanguage(lang) {
document.title = dict.metaTitle;
}
- // ⚡ Bolt: Skip expensive DOM queries and updates if default language (ko) is requested on initial load
- const isInitialKo = currentLang === null && lang === 'ko';
+ // ⚡ Bolt: Skip expensive DOM queries on initial Korean load
+ const isInitialLoad = currentLang === null;
+ const isDefaultLanguage = lang === 'ko';
- if (!isInitialKo) {
+ if (!(isInitialLoad && isDefaultLanguage)) {
if (!i18nNodes) {1 participant
💡 What:
i18n.js에서 페이지 초기 로드 시 기본 언어(Korean)인 경우, 불필요하게 모든 번역 노드(querySelectorAll("[data-i18n]"))를 탐색하고 텍스트를 업데이트하는 과정을 생략하도록 수정했습니다.🎯 Why:
정적 HTML 파일이 이미 한국어로 렌더링되어 있음에도 불구하고, 초기화 스크립트가 실행될 때마다 모든 번역 요소를 다시 순회하며 DOM 쓰기 작업을 시도하는 것은 불필요한 Layout Thrashing과 메인 스레드 블로킹을 유발합니다. 이는 초기 렌더링 성능에 부정적인 영향을 미칩니다.
📊 Impact:
초기 로드 시 발생하는 비효율적인 DOM 쿼리(
querySelectorAll)와 반복문을 건너뜀으로써 메인 스레드 부하를 줄이고 Time to Interactive(TTI)를 개선합니다. 상태 관리에 필요한 요소(langButtons)만 선택적으로 업데이트하도록 보존하여 기능을 그대로 유지합니다.🔬 Measurement:
test_i18n.html을 생성하고 Playwright 스크립트로 기능이 깨지지 않았는지 검증했습니다.PR created automatically by Jules for task 2148889931011247267 started by @seonghobae