| 12345678910111213 | var toString = require('../lang/toString');var lowerCase = require('./lowerCase');var upperCase = require('./upperCase');    /**     * UPPERCASE first char of each word.     */    function properCase(str){        str = toString(str);        return lowerCase(str).replace(/^\w|\s\w/g, upperCase);    }    module.exports = properCase;
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