export type ConfigErrorCode = "CONFIG_VALIDATION" | "CONFIG_VERSION" | "CONFIG_MIGRATION" | "CONFIG_PERSISTENCE" | "CONFIG_RECOVERY" | "CONFIG_IMPORT" | "CONFIG_CONFLICT";
export interface ConfigIssue {
    readonly code: string;
    readonly path: string;
    readonly message: string;
}
/** Base error for domain failures at the configuration boundary. */
export declare class ConfigError extends Error {
    readonly code: ConfigErrorCode;
    constructor(code: ConfigErrorCode, message: string);
}
export declare class ConfigValidationError extends ConfigError {
    readonly issues: readonly ConfigIssue[];
    constructor(issues: readonly ConfigIssue[]);
}
export declare class ConfigVersionError extends ConfigError {
    readonly foundVersion: number | undefined;
    readonly currentVersion: number;
    constructor(foundVersion: number | undefined, currentVersion: number);
}
export declare class ConfigMigrationError extends ConfigError {
    readonly fromVersion: number;
    readonly toVersion: number;
    readonly reasonCode: string;
    constructor(fromVersion: number, toVersion: number, reasonCode: string);
}
export declare class ConfigPersistenceError extends ConfigError {
    readonly operation: string;
    constructor(operation: string, reasonCode?: string);
    readonly reasonCode: string;
}
export declare class ConfigRecoveryError extends ConfigError {
    readonly reasonCode: string;
    constructor(reasonCode?: string);
}
export declare class ConfigImportError extends ConfigError {
    readonly reasonCode: string;
    constructor(reasonCode?: string);
}
export declare class ConfigConflictError extends ConfigError {
    readonly expectedGeneration: number;
    readonly actualGeneration: number;
    constructor(expectedGeneration: number, actualGeneration: number);
}