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31 lines
1.0 KiB
31 lines
1.0 KiB
'use strict'; |
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var callBound = require('call-bound'); |
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/** @type {(receiver: ThisParameterType<typeof String.prototype.valueOf>, ...args: Parameters<typeof String.prototype.valueOf>) => ReturnType<typeof String.prototype.valueOf>} */ |
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var $strValueOf = callBound('String.prototype.valueOf'); |
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/** @type {import('.')} */ |
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var tryStringObject = function tryStringObject(value) { |
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try { |
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$strValueOf(value); |
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return true; |
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} catch (e) { |
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return false; |
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} |
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}; |
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/** @type {(receiver: ThisParameterType<typeof Object.prototype.toString>, ...args: Parameters<typeof Object.prototype.toString>) => ReturnType<typeof Object.prototype.toString>} */ |
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var $toString = callBound('Object.prototype.toString'); |
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var strClass = '[object String]'; |
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var hasToStringTag = require('has-tostringtag/shams')(); |
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/** @type {import('.')} */ |
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module.exports = function isString(value) { |
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if (typeof value === 'string') { |
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return true; |
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} |
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if (!value || typeof value !== 'object') { |
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return false; |
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} |
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return hasToStringTag ? tryStringObject(value) : $toString(value) === strClass; |
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};
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