/**
 * Represents an object that can be used to build a list of assertions.
 *
 * @example
 *
 * ```ts
 * import { ZAssert, createError } from '@zthun/helpful-fn';
 *
 * const user = readUser();
 *
 * ZAssert
 *  .claim(user.name != null, 'User name is required')
 *  .claim(user.email != null, 'User email is required')
 *  .assert((m) => createError(m));
 * ```
 */
export declare class ZAssert {
    /**
     * Initializes a new instance of a ZAssert with one claim.
     *
     * @param claim -
     *        The claim to make.
     * @param msg -
     *        The message to throw if the claim is false.
     *
     * @returns
     *        A new ZAssert object with an initial claim.
     */
    static claim(claim: boolean, msg: any): ZAssert;
    private _messages;
    /**
     * Initializes a new instance of this object.
     */
    private constructor();
    /**
     * Adds a claim.
     *
     * @param claim -
     *        The claim predicate.
     * @param msg -
     *        The message to add if the claim fails.
     *
     * @returns This object.
     */
    claim(claim: boolean, msg: any): this;
    /**
     * Runs the assertion.
     *
     * @param fail -
     *        The factory that is responsible for returning the specified error to throw.
     */
    assert<E extends Error>(fail: (message: any) => E): void;
}