export declare const CONFIG_TIME_ERROR_CODES: readonly ["spec_locator_outside_repo", "monorepo_root_unresolved", "invalid_selector", "duplicate_module_id", "schema_violation", "tool_version_too_old"];
export type ConfigTimeErrorCode = (typeof CONFIG_TIME_ERROR_CODES)[number];
/**
 * Raised before any build runs. A config-time error is never an artifact
 * diagnostic: the artifact of a rejected configuration does not exist.
 */
export declare class ConfigTimeError extends Error {
    readonly code: ConfigTimeErrorCode;
    constructor(code: ConfigTimeErrorCode, message: string);
}