/**
 * Schema validation for brightchain-db collections.
 *
 * Provides a lightweight JSON-Schema-like validator that can enforce
 * document structure on insert and update operations.
 *
 * Supported types: 'string', 'number', 'boolean', 'object', 'array', 'null', 'date', 'any',
 *   'branded-primitive', 'branded-interface'
 * Supported constraints:
 *   - required: array of required field names
 *   - properties: per-field type + constraints
 *   - minLength / maxLength: for strings and arrays
 *   - minimum / maximum: for numbers
 *   - pattern: regex pattern for strings
 *   - enum: allowed values
 *   - items: schema for array elements
 *   - additionalProperties: whether extra fields are allowed (default: true)
 */
import type { CollectionSchema, CollectionSchemaFieldType } from '@digitaldefiance/suite-core-lib';
import type { BsonDocument, FieldSchema, ValidationFieldError } from '../interfaces/storage/documentTypes';
export type { CollectionSchema, FieldSchema };
/**
 * Local alias for backward compatibility.
 * The canonical type is `CollectionSchemaFieldType` in brightchain-lib.
 */
export type SchemaType = CollectionSchemaFieldType;
/**
 * Validate a document against a collection schema.
 *
 * @param doc - The document to validate
 * @param schema - The collection schema
 * @param collectionName - Collection name for error messages
 * @throws ValidationError if validationAction is 'error'
 * @returns Array of validation field errors (empty if valid)
 */
export declare function validateDocument(doc: BsonDocument, schema: CollectionSchema, collectionName: string): ValidationFieldError[];
/**
 * Apply default values from schema to a document (mutates a copy).
 */
export declare function applyDefaults(doc: BsonDocument, schema: CollectionSchema): BsonDocument;
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