Swift 6 Language Mode

• Adopts Swift 6 language mode when using Swift 6 compiler

• Uses Swift Testing when available (Swift 6 compiler)

• Updates internal lock to swift-mutex.

• Drops support for Swift 5.8 and earlier. Swift 5.9 is now the minimum support compiler.

Element where predicate passes

Adds new method to wrapped Collection where an element passes a predicate

@Awaiting var numbers = [Int]()

// suspends until a multiple of 7 is appended to the array e.g. `numbers.append(21)`
let value: Int = try await $numbers.element(where: { $0.isMultiple(of: 7) })

Equatable Waiter

Adds a specialized waiters for Equatable elements:

@Awaiting var name: String?

// Suspends until name == "Fish"
try await $name.equals("Fish")

Modify

Adds func modify() that allows the property to be mutated using the inner lock and then notifying all waiters once the mutation is complete.

@Awaiting.Waiter is Sendable

@Awaiting.Waiter is threadsafe and should be Sendable

Swift 5.7

minor update to fix concurrency warnings within Swift 5.7

Specialized Waiter

Adds some specialized waiters for collections and optionals:

@Awaiting var name: String?

// Suspends until name != nil
let name = try await $name.some()

@Awaiting var entries = [String]()

// Suspends until entries[2] exists
let entry = try await $entries.value(at: 2)

Initial Release

0.1.0