import { type EmptyObject } from 'type-fest';
import { type DirectiveResult } from '../../lit-exports/all-lit-exports.js';
import { type PropertyInitMapBase } from '../properties/element-properties.js';
export type ElementDefinitionWithInputsType<InputsType extends PropertyInitMapBase = PropertyInitMapBase> = {
    InputsType: InputsType;
};
/**
 * Assign an object matching an element's inputs to its inputs.
 *
 * @deprecated Instead of using this directive, assign inputs directly on the element's
 *   interpolation opening tag interpolation.
 * @example Html`<${MyElement} ${assign(MyElement, {value: 1})}>...` should be
 * html`<${MyElement.assign({value: 1})}>...`
 */
export declare function assign<const SpecificDeclarativeElement extends ElementDefinitionWithInputsType>(declarativeElement: SpecificDeclarativeElement, inputsObject: EmptyObject extends Required<SpecificDeclarativeElement['InputsType']> ? never : SpecificDeclarativeElement['InputsType']): DirectiveResult;
/**
 * Assign an object matching an element's inputs to its inputs.
 *
 * @deprecated Instead of using this directive, assign inputs directly on the element's
 *   interpolation opening tag interpolation.
 * @example Html`<${MyElement} ${assign(MyElement, {value: 1})}>...` should be
 * html`<${MyElement.assign({value: 1})}>...`
 */
export declare function assign<const SpecificDeclarativeElement extends ElementDefinitionWithInputsType, const SpecificInput extends SpecificDeclarativeElement['InputsType']>(inputsObject: SpecificInput extends typeof HTMLElement ? never : SpecificInput): DirectiveResult;