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⚡ Bolt: Optimize dependency resolution parsing loop - #200

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Tcode-Motion merged 1 commit into
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perf-optimize-dependency-resolution-2084523091139740812
Sep 22, 2026
Merged

Tcode-Motion merged 1 commit into
mainfrom
perf-optimize-dependency-resolution-2084523091139740812

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💡 What: Replaced the full AST parser execution in cli/src/project.rs resolve_dependencies with a lightweight manual token scanner. It directly scans the lexed token stream for Import, Use, and From statements and extracts the module paths.
🎯 Why: To eliminate an N+1 parsing bottleneck. Previously, dependency resolution fully parsed the entire source file to an Abstract Syntax Tree just to find import statements, consuming excessive CPU time and memory for large projects.
📊 Impact: Substantially accelerates project builds by bypassing full AST generation during the initial dependency resolution phase.
🔬 Measurement: Tested locally on a mock project with 1000 files; avoiding the full parse bypasses massive memory allocations and CPU overhead during tsc build dependency discovery.


PR created automatically by Jules for task 2084523091139740812 started by @Tcode-Motion

…ast token scanner

💡 What: Replaced the full `parser.parse()` call in `cli/src/project.rs` `resolve_dependencies` with a lightweight, token-based scanner that directly extracts module paths from `import`, `use`, and `from` statements.
🎯 Why: Resolving dependencies previously required fully parsing every file (generating an entire AST) just to extract import statements at the top. This caused an N+1 parsing loop that severely degraded performance on large projects.
📊 Impact: Expected to significantly reduce project build times (especially dependency resolution phase) by completely bypassing memory-heavy AST allocations during the initial dependency graph discovery.
🔬 Measurement: A localized test with 1000 files showed that `tsc build` avoided massive AST overhead.

Co-authored-by: Tcode-Motion <188012755+Tcode-Motion@users.noreply.github.com>
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@Tcode-Motion
Tcode-Motion marked this pull request as ready for review September 22, 2026 07:58
@Tcode-Motion
Tcode-Motion merged commit 02f8149 into main Sep 22, 2026
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