/**
 * Error classes for browser AI capabilities
 */
/**
 * Base error class for browser AI operations
 */
export declare class BrowserAIError extends Error {
    code: string;
    adapter?: string | undefined;
    constructor(message: string, code: string, adapter?: string | undefined);
}
/**
 * Thrown when an adapter fails to initialize
 */
export declare class InitializationError extends BrowserAIError {
    constructor(adapter: string, reason?: string);
}
/**
 * Thrown when a required capability is not available
 */
export declare class CapabilityNotAvailableError extends BrowserAIError {
    constructor(capability: string, adapter?: string);
}
/**
 * Thrown when a model download fails
 */
export declare class DownloadError extends BrowserAIError {
    url: string;
    constructor(url: string, reason?: string, adapter?: string);
}
/**
 * Thrown when model loading fails
 */
export declare class ModelLoadError extends BrowserAIError {
    model: string;
    constructor(model: string, reason?: string, adapter?: string);
}
/**
 * Thrown when an operation times out
 */
export declare class TimeoutError extends BrowserAIError {
    constructor(operation: string, timeoutMs: number, adapter?: string);
}
/**
 * Thrown when user denies permission (e.g., microphone access)
 */
export declare class PermissionDeniedError extends BrowserAIError {
    constructor(permission: string, adapter?: string);
}
/**
 * Thrown when an adapter is not in the correct state for an operation
 */
export declare class InvalidStateError extends BrowserAIError {
    constructor(expectedState: string, actualState: string, adapter?: string);
}
/**
 * Thrown when an adapter type is not supported
 */
export declare class UnsupportedAdapterError extends BrowserAIError {
    constructor(adapterType: string, supportedTypes: string[]);
}
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