import { FieldModel, RoSGNode } from "../components/RoSGNode";
import { BrsType } from "..";
import { BrsString } from "../BrsType";
import { Callable } from "../Callable";
export declare class ContentNode extends RoSGNode {
    readonly name: string;
    readonly defaultFields: FieldModel[];
    /**
     * This creates an easy way to track whether a field is a metadata field or not.
     * The reason to keep track is because metadata fields should print out in all caps.
     */
    private metaDataFields;
    constructor(name?: string);
    private getVisibleFields;
    /** @override */
    toString(parent?: BrsType): string;
    /** @override */
    getElements(): BrsString[];
    /** @override */
    getValues(): BrsType[];
    /**
     * @override
     * Returns the number of visible fields in the node.
     */
    protected count: Callable;
    /**
     * @override
     * Returns an array of visible keys from the node in lexicographical order.
     */
    protected keys: Callable;
    /**
     * @override
     * Returns an array of visible values from the node in lexicographical order.
     */
    protected items: Callable;
    /**
     * @override
     * Returns true if the field exists. Marks the field as not hidden.
     */
    protected hasfield: Callable;
}