How do I convert a RACSignal to a SignalProducer in ReactiveCocoa 5?

In ReactiveCocoa 4, we could convert a RACSignal into a SignalProducer using toSignalProducer() . This method does not exist in ReactiveCocoa 5, so how can we do the same thing?

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Use bridgedSignalProducer() in ReactiveObjCBridge:

someSignal.toSignalProducer()

becomes

bridgedSignalProducer(from: someSignal)

This produces a SignalProducer<Value?, AnyError> . Unlike RAC 4's startWithNext() , RAC 5's startWithValues() is only on SignalProducer s whose Error type is NoError . To get around this, I added a utility function on SignalProducer that behaves the same way as startWithValues but works with any Error type (ignoring any error.)

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