TypeScript's code generation tasks were previously run from scratch every time, causing slowdowns especially when only minor or no changes affected generated outputs.

Without caching, the codegen process redundantly regenerated outputs even when source files or inputs hadn't changed, leading to unnecessary CPU time and longer build durations.

Introduced incremental cache wrappers around every codegen operation, allowing reuse of previously generated results when inputs remain unchanged, cutting codegen task times by up to 80%.

Incremental caching can drastically improve build performance for code generation by avoiding redundant work, especially beneficial in iterative development or automated workflows.