import { FDv1FallbackConfig, InitializerEntry, SynchronizerEntry } from './DataSourceEntry';
/**
 * Defines the data pipeline for a connection mode: which data sources
 * are used during initialization and which are used for ongoing synchronization.
 *
 * This interface is not stable, and not subject to any backwards compatibility
 * guarantees or semantic versioning. It is in early access. If you want access
 * to this feature please join the EAP.
 * https://launchdarkly.com/docs/sdk/features/data-saving-mode
 */
export interface ModeDefinition {
    /**
     * Ordered list of data sources to attempt during initialization.
     * Sources are tried in order; the first that successfully provides a full
     * data set transitions the SDK out of the initialization phase.
     */
    readonly initializers: ReadonlyArray<InitializerEntry>;
    /**
     * Ordered list of data sources for ongoing synchronization after
     * initialization completes. Sources are in priority order with automatic
     * failover to the next source if the primary fails.
     * An empty array means no synchronization occurs (e.g., offline, one-shot).
     */
    readonly synchronizers: ReadonlyArray<SynchronizerEntry>;
    /**
     * Configuration for the FDv1 polling fallback synchronizer for this mode.
     * When the platform provides fdv1Endpoints, a fallback synchronizer is
     * automatically appended to modes with synchronizers. This field controls
     * the poll interval and endpoint overrides for that fallback.
     *
     * When omitted (or when a user overrides a mode without specifying this),
     * the built-in default for the mode is used. The fallback cannot be removed
     * through configuration.
     */
    readonly fdv1Fallback?: FDv1FallbackConfig;
}
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