Angular - Performance Optimization
Why does Angular's bundle size analysis sometimes show duplicate modules in the report?
Why does Angular's bundle size analysis sometimes show duplicate modules in the report?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand duplicate modules in bundles
Duplicates appear when multiple versions of a library are included due to dependencies.Step 2: Exclude incorrect reasons
Angular does not duplicate all modules by default; lazy loading affects chunking but not duplicates; CSS files are separate.Final Answer:
Because different versions of the same library are included -> Option CQuick Check:
Duplicate modules = Multiple library versions [OK]
Quick Trick: Duplicates mean multiple versions of a library exist [OK]
Common Mistakes:
- Thinking Angular duplicates all modules always
- Blaming lack of lazy loading for duplicates
- Confusing CSS duplication with JS modules
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