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27 lines
577 B
27 lines
577 B
var upperCase = require('upper-case') |
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var lowerCase = require('lower-case') |
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/** |
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* Swap the case of a string. Manually iterate over every character and check |
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* instead of replacing certain characters for better unicode support. |
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* |
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* @param {String} str |
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* @param {String} [locale] |
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* @return {String} |
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*/ |
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module.exports = function (str, locale) { |
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if (str == null) { |
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return '' |
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} |
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var result = '' |
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for (var i = 0; i < str.length; i++) { |
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var c = str[i] |
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var u = upperCase(c, locale) |
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result += u === c ? lowerCase(c, locale) : u |
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} |
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return result |
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}
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