import { ErrorObject, ValidateFunction } from 'ajv';
import { NgPackageEntryConfig } from '../../ng-entrypoint.schema';
import { NgPackageConfig } from '../../ng-package.schema';
/**
 * Validates the `ngPackageJson` value against the JSON schema using ajv. An error is thrown if
 * schema errors are found.
 *
 * @param ngPackageJson The value to validate.
 */
export declare function validateNgPackageSchema(ngPackageJson: unknown): asserts ngPackageJson is NgPackageConfig;
/**
 * Validates the `ngPackageJson` value against the JSON schema using ajv. An error is thrown if
 * schema errors are found.
 *
 * @param ngPackageJson The value to validate.
 */
export declare function validateNgPackageEntryPointSchema(ngPackageJson: unknown): asserts ngPackageJson is NgPackageEntryConfig;
/** Exported for testing. */
export declare function formatSchemaValidationErrors(errors: ErrorObject[]): string;
/**
 * Returns an initialized ajv validator for the ng-package JSON schema.
 *
 * Exported for testing.
 */
export declare function getSchemaValidator(schema: unknown): ValidateFunction;