/**
 * @module adaptive-expressions
 */
/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
/**
 * util class
 */
export declare class Util {
    /**
     * trim char.
     *
     * @param str input string.
     * @param char trim character.
     * @returns The trimmed char.
     */
    static trim(str: string, char: string): string;
}
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