File size: 450 Bytes
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var co = require('co');
module.exports = function wrap(gen) {
var fn = co.wrap(gen);
if (gen.length === 4) {
return function(err, req, res, next) {
var isParam = !(err instanceof Error);
var callNextRoute = next;
if (isParam) {
callNextRoute = res;
}
return fn(err, req, res, next).catch(callNextRoute);
}
}
return function(req, res, next) {
return fn(req, res, next).catch(next);
};
};
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