Refactor ArrayList to SmartList to optimize memory usage #189
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Jan 9, 2026
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Replaces usages of
ArrayListwithcom.intellij.util.SmartListin DartFileIndexData, DartRefactoringUtil, DartTestUtils, and other key classes.SmartListis a specialized collection in the IntelliJ Platform designed to be more memory-efficient thanArrayListfor lists that are frequently empty or contain only a single element. UnlikeArrayList, which allocates a backing array (default capacity 10) immediately or upon the first addition,SmartListavoids this allocation overhead for single-element lists, significantly reducing heap footprint and garbage collection pressure in hot paths.