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';
  
  var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
  var RE_COLOR_HEXADECIMAL = require( './../lib' );
  
  function isHex( value, mode ) {
  	if ( !isString( value ) ) {
  		return false;
  	}
  	if ( mode === 'shorthand' ) {
  		return RE_COLOR_HEXADECIMAL.shorthand.test( value );
  	}
  	if ( mode === 'either' ) {
  		return RE_COLOR_HEXADECIMAL.either.test( value );
  	}
  	return RE_COLOR_HEXADECIMAL.test( value );
  }
  
  console.log( isHex( 'ffffff', 'full' ) );
  // => true
  
  console.log( isHex( '474747', 'either' ) );
  // => true
  
  console.log( isHex( '0A5BBE', 'shorthand' ) );
  // => false
  
  console.log( isHex( '000', 'full' ) );
  // => false
  
  console.log( isHex( '000', 'either' ) );
  // => true
  
  console.log( isHex( 'F7b', 'shorthand' ) );
  // => true
  
  console.log( isHex( 'abcd', 'either' ) );
  // => false
  
  console.log( isHex( '', 'either' ) );
  // => false
  
  console.log( isHex( null, 'either' ) );
  // => false
  