Understanding Layer Construction and Error Handling in Effect Typescript
When using a scoped Layer to create and hold a database connection (e.g.,
- The Layer is lazily constructed until the first invocation of a
- Any error that can occur during the Layer's construction (such as
- After the Layer is successfully constructed and cached, subsequent effect runs will reuse the same connection and not re-trigger the constructor (nor its errors) until the runtime is disposed and recreated?
In other words: Is it safe to assume that Layer construction errors only occur on the initial use of the runtime, and not on subsequent effect runs, as long as i havent
Layer<IDBDatabase, IDBDatabaseOpenError>ManagedRuntimeruntime.dispose()- The Layer is lazily constructed until the first invocation of a
runtime.runPromise(...)- Any error that can occur during the Layer's construction (such as
IDBDatabaseOpenError- After the Layer is successfully constructed and cached, subsequent effect runs will reuse the same connection and not re-trigger the constructor (nor its errors) until the runtime is disposed and recreated?
In other words: Is it safe to assume that Layer construction errors only occur on the initial use of the runtime, and not on subsequent effect runs, as long as i havent
runtime.dispose()
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