drupflare/worker - v1.0.4
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    Type Alias EffectClass

    EffectClass:
        | "authoritative-sql"
        | "sequence"
        | "session"
        | "security-state"
        | "file"
        | "mail"
        | "outbound-http"
        | "queue"
        | "alarm"
        | "unclassified-capability"

    what kind of thing a request did (a stale cache row is minor, a mail send irreversible)