audit-swift-simplify

Report behavior-preserving ways to make Swift clearer and more idiomatic — without changing what the code does. Point it at a file, a subsystem, or the whole project.

What This Command Does

Launches the swift-simplifier agent to surface local Swift-language simplification opportunities, each tagged by how safe it is to apply.

What It Checks

1. Control flow & optionals – nested if let → guard/comma-form, shorthand if let x, redundant else after return/throw, x != nil ? x! : y → ??
2. if/switch expressions – temp-var-then-assign ladders and nested ternaries → expressions (Swift 5.9)
3. Collection idioms – .count == 0 → .isEmpty, .filter{}.first → .first(where:), .filter{}.count → count(where:) (with purity preconditions)
4. Boilerplate – redundant self., redundant inferred type annotations, redundant return, verbose closures → trailing/$0
5. Dead availability guards – always-true if #available against your deployment floor

Each finding is tagged SAFE / PRECONDITION / ADVISORY. The agent reports; it does not edit.

Related Agent

• swift-simplifier – The agent that powers this command