import { AnyJson, JsonMap } from '@salesforce/ts-types';
import { Logger } from '../logger';
/**
 * Loads a JSON schema and performs validations against JSON objects.
 */
export declare class SchemaValidator {
    private schemaPath;
    private readonly schemasDir;
    private readonly logger;
    private schema?;
    /**
     * Creates a new `SchemaValidator` instance given a logger and path to a schema file.
     *
     * @param logger An {@link Logger} instance on which to base this class's logger.
     * @param schemaPath The path to the schema file to load and use for validation.
     */
    constructor(logger: Logger, schemaPath: string);
    /**
     * Loads a JSON schema from the `schemaPath` parameter provided at instantiation.
     */
    load(): Promise<JsonMap>;
    /**
     * Loads a JSON schema from the `schemaPath` parameter provided at instantiation.
     */
    loadSync(): JsonMap;
    /**
     * Performs validation of JSON data against the schema located at the `schemaPath` value provided
     * at instantiation.
     *
     * **Throws** *{@link SfError}{ name: 'ValidationSchemaFieldError' }* If there are known validations errors.
     * **Throws** *{@link SfError}{ name: 'ValidationSchemaUnknownError' }* If there are unknown validations errors.
     *
     * @param json A JSON value to validate against this instance's target schema.
     * @returns The validated JSON data.
     */
    validate(json: AnyJson): Promise<AnyJson>;
    /**
     * Performs validation of JSON data against the schema located at the `schemaPath` value provided
     * at instantiation.
     *
     * **Throws** *{@link SfError}{ name: 'ValidationSchemaFieldError' }* If there are known validations errors.
     * **Throws** *{@link SfError}{ name: 'ValidationSchemaUnknownError' }* If there are unknown validations errors.
     *
     * @param json A JSON value to validate against this instance's target schema.
     * @returns The validated JSON data.
     */
    validateSync(json: AnyJson): AnyJson;
    /**
     * Loads local, external schemas from URIs in the same directory as the local schema file.
     * Does not support loading from remote URIs.
     * Returns a map of external schema local URIs to loaded schema JSON objects.
     *
     * @param schema The main schema to look up references ($ref) in.
     * @returns An array of found referenced schemas.
     */
    private loadExternalSchemas;
    /**
     * Load another schema relative to the primary schema when referenced.  Only supports local schema URIs.
     *
     * @param uri The first segment of the $ref schema.
     */
    private loadExternalSchema;
    /**
     * Get a string representation of the schema validation errors.
     * Adds additional (human friendly) information to certain errors.
     *
     * @param errors An array of AJV (DefinedError) objects.
     */
    private getErrorsText;
}