Refactored the event store definition to include the optimistic concurrency checks - Githubissues

event-driven-io / emmett

Emmett - a Node.js library taking your event-driven applications back to the future!

https://event-driven-io.github.io/emmett/

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Refactored the event store definition to include the optimistic concurrency checks #12

Closed oskardudycz closed 9 months ago

oskardudycz commented 9 months ago

Adjusted typing to keep StreamVersion part of the Event Store definition, defaulting to bigint.
Added typings for input options and results to include cases where the stream may not exist and the user provides the expected version (or not).
Made aggregateStream and readStream methods take expectedStreamVersion to fail fast.
Adjusted DeciderCommandHandler definition to reuse regular CommandHandler

@watfordsuzy FYI

Relates to #10, the InMemory and EventStoreDB implementations will come in the follow up PRs.