node.js - node ncp filter not working -

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i trying filter files through node ncp library filter not working. once filter gets false return breaks whole copying process

   ncp(source, destination, options, function (err) {             if (err) {                 console.error("backup error:", err);              }             console.log("backup of done!');           });   var options = {             filter: function (file) {                 console.log("copying file:", file);                  var res = file.tostring().indexof("\\testdrive") !== -1;                 console.log("res:", res);                  return !res;              },             //filter: new regexp("\\testdrive"),//or regex intance         };

so once filter function or regex instance gets false result whole copy break

options.filter - regexp instance, against each file name tested determine whether copy or not, or function taking single parameter: copied file name, returning true or false, determining whether copy file or not.





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