import type FDv2ConnectionMode from '../api/datasource/FDv2ConnectionMode';
import type { AutomaticModeSwitchingConfig, LDClientDataSystemOptions, ManualModeSwitching } from '../api/datasource/LDClientDataSystemOptions';
/**
 * Internal data system options that extend the public type with fields
 * that are set by platform SDKs but not exposed to end users.
 */
export interface InternalDataSystemOptions extends LDClientDataSystemOptions {
    /**
     * The default foreground connection mode for this platform.
     * Populated from platform defaults during validation.
     */
    foregroundConnectionMode?: FDv2ConnectionMode;
    /**
     * The connection mode to use when the application transitions to the background.
     * Set by platform SDKs (e.g., mobile) via platform defaults.
     */
    backgroundConnectionMode?: FDv2ConnectionMode;
}
/**
 * Platform-specific default configuration for the FDv2 data system.
 * Internal to the SDK — not exposed to end users.
 */
export interface PlatformDataSystemDefaults {
    /** The default foreground connection mode for this platform. */
    readonly foregroundConnectionMode: FDv2ConnectionMode;
    /** The default background connection mode, if any. */
    readonly backgroundConnectionMode?: FDv2ConnectionMode;
    /** Whether automatic mode switching is enabled by default. */
    readonly automaticModeSwitching: boolean | AutomaticModeSwitchingConfig | ManualModeSwitching;
}
declare const dataSystemValidators: {
    backgroundConnectionMode: import("@launchdarkly/js-sdk-common").OneOf;
    automaticModeSwitching: import("../configuration/validateOptions").CompoundValidator;
    connectionModes: import("../configuration/validateOptions").CompoundValidator;
};
/**
 * Default FDv2 data system configuration for browser SDKs.
 */
declare const BROWSER_DATA_SYSTEM_DEFAULTS: PlatformDataSystemDefaults;
/**
 * Default FDv2 data system configuration for mobile (React Native) SDKs.
 */
declare const MOBILE_DATA_SYSTEM_DEFAULTS: PlatformDataSystemDefaults;
/**
 * Default FDv2 data system configuration for desktop SDKs (Electron, etc.).
 */
declare const DESKTOP_DATA_SYSTEM_DEFAULTS: PlatformDataSystemDefaults;
/**
 * Resolve the foreground connection mode from a validated data system config
 * and platform defaults. Uses the mode from `ManualModeSwitching` when present,
 * otherwise falls back to the platform default.
 */
declare function resolveForegroundMode(dataSystem: InternalDataSystemOptions, defaults: PlatformDataSystemDefaults): FDv2ConnectionMode;
export { dataSystemValidators, resolveForegroundMode, BROWSER_DATA_SYSTEM_DEFAULTS, MOBILE_DATA_SYSTEM_DEFAULTS, DESKTOP_DATA_SYSTEM_DEFAULTS, };
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