anthropic/cache-miss.ts

Defines a unified cache‑miss reason type for Anthropic SDK diagnostics.

// Source: https://github.com/obra/lace | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
// ABOUTME: Discriminated union mirroring @anthropic-ai/sdk's BetaDiagnostics.cache_miss_reason
// ABOUTME: SDK 0.98.0 exports the individual variants but no named union — we build one here

import type {
  BetaCacheMissModelChanged,
  BetaCacheMissSystemChanged,
  BetaCacheMissToolsChanged,
  BetaCacheMissMessagesChanged,
  BetaCacheMissPreviousMessageNotFound,
  BetaCacheMissUnavailable,
} from '@anthropic-ai/sdk/resources/beta/messages/messages';

/**
 * The discriminated union of cache-miss reasons returned by the Anthropic
 * cache-diagnosis-2026-04-07 beta. Mirrors the shape of
 * `BetaDi

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