API reference › @evolu/common › local‑first/Evolu › DevicePersistence

type DevicePersistence = "Persisted" | "NotPersisted" | "Unknown";

Defined in: packages/common/src/local-first/Evolu.ts:950

Whether this device keeps an Evolu database, stating only what Evolu knows for sure.

  • Persisted: the platform stores it in the app's own file, as React Native does.
  • NotPersisted: it is kept in memory, because EvoluConfig.memoryOnly asks for that or the platform offers no persistent storage, as a browser does in Safari's Private Browsing or a Firefox private window. Data that has not synced is lost when the database closes.
  • Unknown: it is stored, but the platform may delete it. A browser can keep storage only for a private session, as Chrome's incognito does without telling the app, delete it after a while or when disk space runs low, and let the user clear it.

See Will my data stay on the device?.

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