86 lines
1.9 KiB
JavaScript
86 lines
1.9 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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/**
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* Test if a value is a symbol.
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*
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* @module @stdlib/assert/is-symbol
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*
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* @example
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* var Symbol = require( '@stdlib/symbol/ctor' );
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* var isSymbol = require( '@stdlib/assert/is-symbol' );
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*
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* var bool = isSymbol( Symbol( 'beep' ) );
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* // returns true
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*
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* bool = isSymbol( Object( Symbol( 'beep' ) ) );
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* // returns true
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*
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* bool = isSymbol( {} );
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* // returns false
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*
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* @example
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* var Symbol = require( '@stdlib/symbol/ctor' );
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* var isSymbol = require( '@stdlib/assert/is-symbol' ).isPrimitive;
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*
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* var bool = isSymbol( Symbol( 'beep' ) );
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* // returns true
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*
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* bool = isSymbol( Object( Symbol( 'beep' ) ) );
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* // returns false
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*
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* bool = isSymbol( {} );
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* // returns false
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*
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* @example
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* var Symbol = require( '@stdlib/symbol/ctor' );
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* var isSymbolObject = require( '@stdlib/assert/is-symbol' ).isObject;
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*
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* var bool = isSymbolObject( Symbol( 'beep' ) );
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* // returns false
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*
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* bool = isSymbolObject( Object( Symbol( 'beep' ) ) );
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* // returns true
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*
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* bool = isSymbolObject( {} );
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* // returns false
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*/
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// MODULES //
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var hasSymbols = require( './../../has-symbol-support' );
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var main = require( './main.js' );
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var polyfill = require( './polyfill.js' );
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// MAIN //
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var isSymbol;
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if ( hasSymbols() ) {
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isSymbol = main;
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} else {
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isSymbol = polyfill;
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}
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// EXPORTS //
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module.exports = isSymbol;
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