The structured telemetry marker 0.4.x emitted when the implicit createCausl() path returned a pure-TypeScript graph instead of the wasm engine.

Since 0.5.0 — never emitted; createCausl() throws instead. Removed in 0.6.0. See CauslTsFallbackReason.

interface CauslCapabilityFallbackEvent {
    cause?: unknown;
    fallbackEngine: "js-ssot";
    reason: CauslTsFallbackReason;
    spec: "§18A.13.1" | "§18A.13";
    type: "causl:capability-fallback";
}

Properties

cause?: unknown

The underlying WasmGC instantiation failure, if any.

fallbackEngine: "js-ssot"

The engine the implicit path degraded TO.

WHY the floor.

spec: "§18A.13.1" | "§18A.13"

The SPEC clause the degrade implemented.

type: "causl:capability-fallback"

Stable discriminant for log/metric pipelines.