/**
 * Options that can be used with the `@importModel` and `@importModels`
 * decorators.
 */
export interface ModelImportOptions {
    /**
     * Whether the imported model is required in order for the importer to
     * function correctly. The default is true.
     */
    isRequired?: boolean;
    /**
     * The type (or types) of model to import (corresponding to its item type in
     * VertiGIS Studio Web App config).
     */
    type: string | string[];
}
/**
 * Metadata captured by an @importModel decorator.
 */
export interface ModelImportDeclaration extends ModelImportOptions {
    /**
     * The property name.
     */
    property: string | symbol;
    /**
     * Whether the property is for a collection of models, or just a single
     * model.
     */
    isMultiple: boolean;
}
/**
 * Expresses a dependency on a model.
 *
 * @param options The type of model to import, or an options object.
 */
export declare function importModel(options: string | string[] | ModelImportOptions): PropertyDecorator;
/**
 * Expresses a dependency on a collection of models.
 *
 * If the property is an instance of @arcgis/core/Collection, then it will be
 * modified in place as models become available or unavailable. Otherwise, it
 * will be set to a new array whenever there is a change.
 *
 * @param options The type of models to import, or an options object.
 */
export declare function importModels(options: string | string[] | ModelImportOptions): PropertyDecorator;
/**
 * Gets all import declarations for a given model instance.
 *
 * @param model The model to get imports declarations for.
 */
export declare function getModelImports(model: object): ModelImportDeclaration[];