Hands-On Design Patterns with Swift

Extracting a framework

Now that we have our code properly and satisfactorily refactored, we can move on to the next step: making the actual framework and using it in a project.

To create our new FuturesAndPromises framework, perform the following steps:

1. Create a new directory, called FuturesAndPromises
2. Run cd FuturesAndPromises and then swift package init --type library
3. Copy the four source files you created into Sources/FuturesAndPromises
4. Run swift build to check that your code compiles correctly; if not, fix all the errors until it compiles successfully
5. If you have created a test file, copy it to Tests/FuturesAndPromisesTests and run swift test

If your swift build step completed without errors, you have successfully created your FuturesAndPromises ...