/** Structured error codes for the pi-server HTTP protocol. */
export declare const PiServerErrorCode: {
    readonly SESSION_NOT_FOUND: "SESSION_NOT_FOUND";
    readonly SESSION_NO_STATIC_CONTEXT: "SESSION_NO_STATIC_CONTEXT";
    readonly PARENT_ENTRY_NOT_FOUND: "PARENT_ENTRY_NOT_FOUND";
    readonly LEAF_ID_NOT_FOUND: "LEAF_ID_NOT_FOUND";
    readonly ENTRY_ALREADY_EXISTS: "ENTRY_ALREADY_EXISTS";
    readonly INVALID_REQUEST: "INVALID_REQUEST";
    readonly REQUIRED_FIELD_MISSING: "REQUIRED_FIELD_MISSING";
    readonly RUN_NOT_FOUND: "RUN_NOT_FOUND";
    readonly RUN_IN_PROGRESS: "RUN_IN_PROGRESS";
    readonly SESSION_STATE_CONFLICT: "SESSION_STATE_CONFLICT";
    readonly INTERNAL_ERROR: "INTERNAL_ERROR";
};
export type PiServerErrorCode = (typeof PiServerErrorCode)[keyof typeof PiServerErrorCode];
export interface PiServerErrorResponse {
    error: string;
    code?: PiServerErrorCode;
    details?: Record<string, unknown>;
}
export declare class PiServerError extends Error {
    readonly code: PiServerErrorCode;
    readonly details?: Record<string, unknown>;
    constructor(message: string, code: PiServerErrorCode, details?: Record<string, unknown>);
}
export declare function isRecoverableTreeDivergenceCode(code: PiServerErrorCode | undefined): boolean;
export declare function isRecoverableMissingServerStateCode(code: PiServerErrorCode | undefined): boolean;
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