qjs/test/fixtures/trycatch.js

Use the await keyword with Q promises to tame your async code

require('../../').compile(module, function () {
    var obj = { result: 'foo' };
    module.exports.onSuccess = function () {
        try {
            return yield(Q.delay(4, 0));
        } catch (ex) {
            throw ex;
        }
    };
    module.exports.onFail = function () {
        var res = 'not caught';
        try {
            return yield(Q.reject(new Error('message')));
        } catch (ex) {
            res = 'caught';
        }
        return res;
    };
});