text: /**
  * @license Apache-2.0
  *
  * Copyright (c) 2018 The Stdlib Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  'use strict';
  
  /**
  * If a function does not return an error, invoke a callback with the function result; otherwise, invoke a second function `y`.
  *
  * @module @stdlib/utils/async/try-then
  *
  * @example
  * var randu = require( '@stdlib/random/base/randu' );
  * var trythenAsync = require( '@stdlib/utils/async/try-then' );
  *
  * function x( clbk ) {
  *     setTimeout( onTimeout, 0 );
  *     function onTimeout() {
  *         if ( randu() > 0.5 ) {
  *             return clbk( null, 1.0 );
  *         }
  *         clbk( new Error( 'beep' ) );
  *     }
  * }
  *
  * function y( clbk ) {
  *     setTimeout( onTimeout, 0 );
  *     function onTimeout() {
  *         clbk( null, -1.0 );
  *     }
  * }
  *
  * function done( error, result ) {
  *     if ( error ) {
  *         throw error;
  *     }
  *     console.log( result );
  * }
  *
  * trythenAsync( x, y, done );
  */
  
  // MODULES //
  
  var trythenAsync = require( './try_then_async.js' );
  
  
  // EXPORTS //
  
  module.exports = trythenAsync;
  