STRING.replace() is undefined

Hi,

my goal: converting of blob to string.

'iamge' is output from camera and it is a blob.

var base64string = Ti.Utils.base64encode(image);    
var imagestring = require('/lib/base64').base64decode(base64string)

Here the base64decode modul:

exports.base64decode = function(input) {
    var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var output, chr1, chr2, chr3,enc1, enc2, enc3, enc4 = "";
    var i = 0;
    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
    do {
        enc1 = keyStr.indexOf(input.charAt(i++));
        enc2 = keyStr.indexOf(input.charAt(i++));
        enc3 = keyStr.indexOf(input.charAt(i++));
        enc4 = keyStr.indexOf(input.charAt(i++));
        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;
        output = output + String.fromCharCode(chr1);
        if (enc3 != 64) {
            output = output + String.fromCharCode(chr2);
        }
        if (enc4 != 64) {
            output = output + String.fromCharCode(chr3);
        }
        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = "";
    } while (i < input.length);
    return unescape(output);
};

And now the amazing: The interpreter stopps on line 5 in modul with:

'undefined' is not a function (evaluating 'input.replace(/[^A-Za-z0-9\\+\\/\\=]/g, ')')';

hi,

try to first store your blob image in applicationdata directory and then get it by filesystem then try....