/**
 * Copyright Zendesk, Inc.
 *
 * Use of this source code is governed under the Apache License, Version 2.0
 * found at http://www.apache.org/licenses/LICENSE-2.0.
 */
/**
 * Helper to replace your nested 'ifs' with a single, readable expression.
 * Note that both the return and case are eagerly evaluated. If you wish to avoid that, use getters (2nd example).
 * @example
 * switchFn(
 *   {case: A === B, return: 'equal'},
 *   {case: B > C, return: 'different'},
 *   {return: 'default_value'}
 * );
 * @example
 * switchFn(
 *   {
 *     get case() {
 *       return deepEqual(A, B);
 *     },
 *     get return() {
 *       return computationallyExpensive(A, B);
 *     },
 *   },
 *   // ...
 *   {return: 'default_value'}
 * );
 * @param caseDefinitions
 */
export declare function switchFn<ResultT>(...caseDefinitions: [
    ...cases: {
        case: boolean;
        return: ResultT;
    }[],
    defaultCase: {
        return: ResultT;
    }
]): ResultT;