import { liquidDispatch, liquidDispatchSync, toLiquidPrimitive } from "./drop";
/**
 * The base class for objects wrapping undefined variables found in
 * Liquid templates.
 */
export declare abstract class Undefined {
    readonly name: string;
    readonly object?: unknown;
    readonly hint?: string | undefined;
    /**
     * Create a new `Undefined` object.
     *
     * @param name - The name of the undefined variable.
     * @param object - The target object which does not have a property
     * with the given name.
     * @param hint - Optionally override the default "undefined" message.
     */
    constructor(name: string, object?: unknown, hint?: string | undefined);
    toString(): string;
    /**
     * Prompt the undefined type to throw an error.
     */
    poke(): void;
}
/**
 * An {@link Undefined} type that throws an error whenever it appears
 * in a Liquid expression.
 */
export declare class StrictUndefined extends Undefined {
    static from(name: string): StrictUndefined;
    toString(): string;
    poke(): void;
    valueOf(): void;
    [Symbol.iterator](): Iterator<unknown>;
    [toLiquidPrimitive](): void;
    [liquidDispatch](): Promise<void>;
    [liquidDispatchSync](): void;
    get first(): void;
    get last(): void;
    get size(): void;
}
/**
 * An {@link Undefined} type that evaluates to an empty string or `0`,
 * and can be indexed and iterated over without error.
 */
export declare class LaxUndefined extends Undefined {
    static from(name: string): LaxUndefined;
    toString(): string;
    poke(): void;
    valueOf(): string;
    [liquidDispatch](): Promise<this>;
    [liquidDispatchSync](): this;
    [Symbol.iterator](): Iterator<unknown>;
    [Symbol.toPrimitive](hint: string): 0 | "" | null;
    get first(): this;
    get last(): this;
    get size(): this;
}
/**
 * An {@link Undefined} type that will evaluate to `false` in a boolean
 * expression and throw an error when iterated, output or when accessing
 * its properties.
 */
export declare class FalsyStrictUndefined extends Undefined {
    static from(name: string): FalsyStrictUndefined;
    toString(): string;
    poke(): void;
    valueOf(): void;
    [Symbol.iterator](): Iterator<unknown>;
    [liquidDispatch](): Promise<void>;
    [liquidDispatchSync](): void;
    get first(): void;
    get last(): void;
    get size(): void;
}