# `Dala.Spark.Dsl.Verifier`
[🔗](https://github.com/manhvu/dala/blob/main/lib/dala/spark/dsl.ex#L189)

Compile-time validation for Dala Spark DSL.

Checks:
- All event handler props reference atoms
- Attribute types are valid

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*Consult [api-reference.md](api-reference.md) for complete listing*