turborepo-scope

Package scope resolution for Turborepo. Filters and selects packages based on --filter patterns, --affected change detection, and glob matching.

Architecture

                           resolve_packages()
                                  |
                                  v
                          +---------------+
                          | FilterResolver|
                          +---------------+
                                  |
          +-----------+----------+-----------+
          |           |                      |
          v           v                      v
   +-----------+ +-----------+      +------------------+
   | TargetSel-| | SimpleGlob|      | ScopeChange-     |
   | ector     | | (names)   |      | Detector         |
   +-----------+ +-----------+      +------------------+
        |                                    |
        v                                    v
   Parse filter strings             Query SCM for changed
   like "foo...",                   files between refs,
   "{dir}[ref]"                     map to packages

Modules:

filter.rs - Core FilterResolver that combines selectors, globs, and change detection
target_selector.rs - Parses --filter syntax (...pkg..., {dir}, [ref])
change_detector.rs - GitChangeDetector trait + ScopeChangeDetector implementation
simple_glob.rs - Lightweight glob for package name matching (not paths)

Notes

Extracted from turborepo-lib to reduce coupling
The ResolutionError type is large (~128 bytes) due to ChangeMapError; boxing was intentionally avoided for CLI ergonomics
ScopeOpts is re-exported from turborepo-types for backwards compatibility
SimpleGlob is intentionally minimal - use wax::Glob for path matching