import * as _Object from './ion/Object';
import * as Expression from './Expression';
import * as Typed from './Typed';
import * as Node from './Node';
import * as Location from './Location';
import * as Null from './ion/Null';
import * as Type from './Type';
import * as Boolean from './ion/Boolean';
export declare class YieldExpression implements _Object.Object, Expression.Expression, Typed.Typed, Node.Node {
    readonly location: Location.Location | Null.Null;
    readonly type: Type.Type | Null.Null;
    readonly argument: Expression.Expression;
    readonly delegate: Boolean.Boolean;
    static readonly id = "YieldExpression";
    static readonly implements: Set<string>;
    constructor({ location, type, argument, delegate }: {
        location?: Location.Location | Null.Null;
        type?: Type.Type | Null.Null;
        argument: Expression.Expression;
        delegate?: Boolean.Boolean;
    });
    patch(properties: {
        location?: Location.Location | Null.Null;
        type?: Type.Type | Null.Null;
        argument?: Expression.Expression;
        delegate?: Boolean.Boolean;
    }): YieldExpression;
    static is(value: any): value is YieldExpression;
}
export declare function isYieldExpression(value: any): value is YieldExpression;
export default YieldExpression;
