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