# Eventstore API

Based on

 - https://github.com/tim-group/tg-eventstore (Java)
 - https://github.com/araqnid/eventstore (Kotlin)
 
## Usage

Reading a stream:

```typescript
async function listTransactionHistory(transactionId: string, eventSource: EventSource): Promise<{timestamp: Date, data: Transaction}> {
  return lastValueFrom(
      eventSource.streamReader.readStreamForwards({category: "transaction", id: transactionId})
        .pipe(toArray(), map(re => ({timestamp: re.event.timestamp, data: re.event.data as Transaction})))
  )
}
```

Reading entire store:

```typescript
return new Promise(((resolve, reject) => {
    let lastPosition = position
    eventSource.storeReader.readAll(position).subscribe(
      re => {
        ingestTransaction(re.event.data as Transaction)
        lastPosition = re.position
      },
      err => reject("Failed to read all transactions since " + lastPosition + ": " + err),
      () => resolve(lastPosition)
    )
}))
```

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@acuris/eventstore-api

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eventstore-api

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@acuris/eventstore-api

Eventstore API

Usage

Code Formatting with Prettier

Keywords

Related posts

@acuris/eventstore-api

Eventstore API

Usage

Code Formatting with Prettier

Keywords

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