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20 lines
599 B
20 lines
599 B
'use strict'; |
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var irregularPlurals = require('irregular-plurals'); |
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module.exports = function (str, plural, count) { |
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if (typeof plural === 'number') { |
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count = plural; |
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} |
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if (str in irregularPlurals) { |
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plural = irregularPlurals[str]; |
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} else if (typeof plural !== 'string') { |
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plural = (str.replace(/(?:s|x|z|ch|sh)$/i, '$&e').replace(/([^aeiou])y$/i, '$1ie') + 's') |
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.replace(/i?e?s$/i, function (m) { |
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var isTailLowerCase = str.slice(-1) === str.slice(-1).toLowerCase(); |
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return isTailLowerCase ? m.toLowerCase() : m.toUpperCase(); |
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}); |
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} |
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return count === 1 ? str : plural; |
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};
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