/**
 * Early Termination Validator
 *
 * Pre-flight checks for validation that can fail fast:
 * - JSON structure validation
 * - ResourceType presence and validity
 * - Critical required fields
 * - Meta requirements
 *
 * Returns immediately on critical errors without running full validation.
 */
import type { ValidationIssue } from '../types';
export interface EarlyTerminationResult {
    /** Should validation continue? */
    shouldContinue: boolean;
    /** Critical issues that caused termination */
    issues: ValidationIssue[];
    /** Reason for termination */
    reason?: string;
}
export interface EarlyTerminationConfig {
    /** Stop on missing resourceType */
    requireResourceType: boolean;
    /** Stop on missing id */
    requireId: boolean;
    /** Stop on empty resource */
    rejectEmpty: boolean;
    /** Maximum resource size in bytes */
    maxResourceSize?: number;
    /** Required top-level fields */
    requiredFields?: string[];
}
export declare class EarlyTerminationValidator {
    private config;
    constructor(config?: Partial<EarlyTerminationConfig>);
    /**
     * Configure early termination
     */
    setConfig(config: Partial<EarlyTerminationConfig>): void;
    /**
     * Check if validation should continue
     * Returns immediately on critical failures
     */
    check(resource: any): EarlyTerminationResult;
    private fatalResult;
    private checkRequiredFields;
    /**
     * Quick check for minimal validity (fastest possible)
     */
    isMinimallyValid(resource: any): boolean;
    /**
     * Get list of valid FHIR R4 resource types
     */
    getValidResourceTypes(): string[];
}
export declare const earlyTerminationValidator: EarlyTerminationValidator;
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