future_queue

Description:

future queue

future_queue #
Dart package which provides sequential future execution with return values.
How it works #
Here is a code example which demonstrates how futures are queued:
final futureQueue = FutureQueue<int>(seed: 0);

final result1 = futureQueue.append(
() => Future.delayed(Duration(seconds: 5), () => 1),
);
final result2 = futureQueue.append(
() => Future.delayed(Duration(seconds: 1), () => 2),
);

print('result1: ${await result1}');
print('result2: ${await result2}');
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Will print:
1
2
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Allowing null #
Simply set the type of the FutureQueue to a nullable value:
final futureQueue = FutureQueue<int?>(seed: null);
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Even though the first future takes 4 seconds longer than the second future.
Error handling #
If the future throws an exception it can be caught, as usual, by chaining a catchError on the Future returned by FutureBuilder's append.