next.js

e07cc5cc - [turbopack] Refactor the analyzer to fix a few issues and prepare to split it up (#86265)

[turbopack] Refactor the analyzer to fix a few issues and prepare to split it up (#86265) # Refactor Analyzer State Management in Turbopack This PR refactors the state management in the Turbopack ECMAScript analyzer to improve code organization and maintainability. The changes include: - Introduced a `LexicalContext` enum to track the current execution context (function, module, control flow) and remove most dependencies on AstPath - Moved early return stack and variable declaration kind into the `AnalyzerState` struct - Added helper methods for entering and exiting different block types - Improved handling of nested blocks and control flow - Fixed unreachable code detection in anonymous blocks which allows us to drop some redundant unreachable effects from loops - Handle more cases for nested `var` declarations These refactorings are all either fixing minor issues or regularizing state management. This is preparation for splitting this AST traversal into two pieces.