Combine

Combine

PublishSubject

Wrapper for Combine.PassthroughSubject that forces failure type to Never, so you don't need to write it every time you declare publisher type.

Before:

let exampleSubject = PassthroughSubject<Bool, Never>()

After:

let exampleSubject = PublishSubject<Bool>()

ValueSubject

Wrapper for Combine.CurrentValueSubject that forces failure type to Never, so you don't need to write it every time you declare publisher type.

Before:

let exampleSubject = CurrentValueSubject<Bool, Never>(false)

After:

let exampleSubject = ValueSubject<Bool>(false)

Publisher extensions

asVoid()

Simplifies dropping publisher values with mapping them to Void(). Reduces usage of empty arguments and braces in code for better readability.

Before:

exampleSubject
    .map { _ in Void() }
    .sink {}

After:

exampleSubject
    .asVoid()
    .sink {}

filterNil()

Simplifies dropping nil values in publisher with optional output type. Reduces usage of short braces in code for better readability.

Before:

exampleOptionalSubject
    .compactMap { $0.value }
    .sink {}

After:

exampleOptionalSubject
    .filterNil()
    .sink {}

firstNotNil()

Simplifies subscribing to first not nil value in publisher with optional output type. Reduces usage of short braces in code for better readability.

Before:

exampleOptionalSubject
    .first { $0.value != nil }
    .sink {}

After:

exampleOptionalSubject
    .firstNotNil()
    .sink {}