/** Base class for embeddings errors, each with a stable `code`. */
export declare class EmbeddingError extends Error {
    /** Stable code, such as `EMBEDDING_VALIDATION_ERROR`. */
    readonly code: string;
    /** The underlying error. */
    readonly cause?: unknown | undefined;
    constructor(message: string, 
    /** Stable code, such as `EMBEDDING_VALIDATION_ERROR`. */
    code: string, 
    /** The underlying error. */
    cause?: unknown | undefined);
}
/** Raised when a request is invalid before anything is sent. */
export declare class EmbeddingValidationError extends EmbeddingError {
    constructor(message: string, cause?: unknown);
}
/** Raised when an embeddings provider fails. */
export declare class EmbeddingProviderError extends EmbeddingError {
    /** The provider. */
    readonly provider?: string | undefined;
    constructor(message: string, 
    /** The provider. */
    provider?: string | undefined, cause?: unknown);
}
/** Raised when no provider, or no provider by the requested name, is registered. */
export declare class EmbeddingProviderNotFoundError extends EmbeddingProviderError {
    constructor(provider?: string);
}
/**
 * A requested option the target model or adapter cannot honor.
 *
 * Embeddings refuse rather than drop: a vector produced with different dimensions or a different
 * input type is silently incompatible with the vectors already in a store, and the mismatch only
 * surfaces later as bad retrieval.
 */
export declare class EmbeddingCapabilityError extends EmbeddingProviderError {
    /** The unsupported option, such as `dimensions` or `inputType`. */
    readonly option: string;
    /** The value requested. */
    readonly requestedValue?: unknown | undefined;
    /** Always `EMBEDDING_CAPABILITY_ERROR`. */
    readonly code = "EMBEDDING_CAPABILITY_ERROR";
    constructor(provider: string, 
    /** The unsupported option, such as `dimensions` or `inputType`. */
    option: string, 
    /** The value requested. */
    requestedValue?: unknown | undefined, detail?: string);
}
/**
 * Raised when a provider's response does not have the shape the adapter expects, such as the wrong
 * number of vectors.
 */
export declare class EmbeddingProviderResponseError extends EmbeddingProviderError {
    /** Always `EMBEDDING_PROVIDER_RESPONSE_ERROR`. */
    readonly code = "EMBEDDING_PROVIDER_RESPONSE_ERROR";
    constructor(provider: string, message: string, cause?: unknown);
}
/** Raised when a model is not in the embeddings registry and no provider was named. */
export declare class EmbeddingModelNotFoundError extends EmbeddingError {
    /** The model looked up. */
    readonly model: string;
    constructor(
    /** The model looked up. */
    model: string);
}