import { JsonSchema, JsonSchemaBuilder, CommonLogger } from '@naturalcycles/js-lib';
import Ajv from 'ajv';
import { AjvValidationError } from './ajvValidationError';
export interface AjvValidationOptions {
    objectName?: string;
    objectId?: string;
    /**
     * @default to cfg.logErrors, which defaults to true
     */
    logErrors?: boolean;
    /**
     * Used to separate multiple validation errors.
     *
     * @default cfg.separator || '\n'
     */
    separator?: string;
}
export interface AjvSchemaCfg {
    /**
     * Pass Ajv instance, otherwise Ajv will be created with
     * AjvSchema default (not the same as Ajv defaults) parameters
     */
    ajv: Ajv;
    /**
     * Dependent schemas to pass to Ajv instance constructor.
     * Simpler than instantiating and passing ajv instance yourself.
     */
    schemas?: (JsonSchema | JsonSchemaBuilder | AjvSchema)[];
    objectName?: string;
    /**
     * Used to separate multiple validation errors.
     *
     * @default '\n'
     */
    separator: string;
    /**
     * @default true
     */
    logErrors: boolean;
    /**
     * Default to `console`
     */
    logger: CommonLogger;
    /**
     * Option of Ajv.
     * If set to true - will mutate your input objects!
     * Defaults to false.
     *
     * This option is a "shortcut" to skip creating and passing Ajv instance.
     */
    coerceTypes?: boolean;
}
/**
 * On creation - compiles ajv validation function.
 * Provides convenient methods, error reporting, etc.
 *
 * @experimental
 */
export declare class AjvSchema<T = unknown> {
    schema: JsonSchema<T>;
    private constructor();
    /**
     * Conveniently allows to pass either JsonSchema or JsonSchemaBuilder, or existing AjvSchema.
     * If it's already an AjvSchema - it'll just return it without any processing.
     * If it's a Builder - will call `build` before proceeding.
     * Otherwise - will construct AjvSchema instance ready to be used.
     *
     * Implementation note: JsonSchemaBuilder goes first in the union type, otherwise TypeScript fails to infer <T> type
     * correctly for some reason.
     */
    static create<T>(schema: JsonSchemaBuilder<T> | JsonSchema<T> | AjvSchema<T>, cfg?: Partial<AjvSchemaCfg>): AjvSchema<T>;
    /**
     * Create AjvSchema directly from a filePath of json schema.
     * Convenient method that just does fs.readFileSync for you.
     */
    static readJsonSync<T = unknown>(filePath: string, cfg?: Partial<AjvSchemaCfg>): AjvSchema<T>;
    readonly cfg: AjvSchemaCfg;
    private readonly validateFunction;
    /**
     * It returns the original object just for convenience.
     * Reminder: Ajv will MUTATE your object under 2 circumstances:
     * 1. `useDefaults` option (enabled by default!), which will set missing/empty values that have `default` set in the schema.
     * 2. `coerceTypes` (false by default).
     *
     * Returned object is always the same object (`===`) that was passed, so it is returned just for convenience.
     */
    validate(obj: T, opt?: AjvValidationOptions): T;
    getValidationError(obj: T, opt?: AjvValidationOptions): AjvValidationError | undefined;
    isValid(obj: T): boolean;
}