var Q = require('q');
var fs = require('fs');
var genify = require('genify');
// wrap your object into genify function
var object = genify({
concatFiles: function * (file1, file2, outFile) {
file1 = yield Q.nfcall(fs.readFile, file1);
file2 = yield Q.nfcall(fs.readFile, file2);
var concated = file1 + file2;
yield Q.nfcall(fs.writeFile, outFile, concated);
return concated;
}
});
// concatFiles是一个generator函数，
// 可以使用promises处理结果和错误
object.concatFiles('./somefile1.txt', './somefile2.txt', './concated.txt').then(function (res) {
// do something with result
}, function (err) {
// do something with error
});
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