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46 lines
1.1 KiB
46 lines
1.1 KiB
var Symbol = require('./_Symbol'); |
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/** Used for built-in method references. */ |
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var objectProto = Object.prototype; |
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/** Used to check objects for own properties. */ |
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var hasOwnProperty = objectProto.hasOwnProperty; |
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/** |
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* Used to resolve the |
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* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) |
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* of values. |
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*/ |
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var nativeObjectToString = objectProto.toString; |
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/** Built-in value references. */ |
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var symToStringTag = Symbol ? Symbol.toStringTag : undefined; |
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/** |
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* A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values. |
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* |
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* @private |
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* @param {*} value The value to query. |
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* @returns {string} Returns the raw `toStringTag`. |
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*/ |
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function getRawTag(value) { |
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var isOwn = hasOwnProperty.call(value, symToStringTag), |
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tag = value[symToStringTag]; |
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try { |
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value[symToStringTag] = undefined; |
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var unmasked = true; |
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} catch (e) {} |
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var result = nativeObjectToString.call(value); |
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if (unmasked) { |
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if (isOwn) { |
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value[symToStringTag] = tag; |
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} else { |
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delete value[symToStringTag]; |
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} |
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} |
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return result; |
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} |
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module.exports = getRawTag;
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