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var extsprintf = require('extsprintf');
var fs = require('fs');
var verror = require('../lib/verror');
function checkFile(filename, callback) {
fs.stat(filename, function (err) {
if (err)
/* Annotate the "stat" error with what we were doing. */
return (callback(new verror.VError(err,
'failed to check "%s"', filename)));
/* ... */
return (callback());
});
}
function handleRequest(filename, callback) {
checkFile('/nonexistent', function (err) {
if (err)
/* Wrap the "checkFile" error. */
return (callback(new verror.WError(
err, 'request failed')));
/* ... */
return (callback());
});
}
handleRequest('/nonexistent', function (err) {
if (err) {
console.log(err.message);
console.log(err.toString());
}
});