Question

我正在尝试使用ibm bluemix中的nodejs运行解析服务器，但它在解析服务器PromiseRouter文件中抛出错误。

PromiseRouter.js:48
        throw _iteratorError;
              ^
ReferenceError: Symbol is not defined

我如何解决此问题

我的应用.js

var express = require('express');
var ParseServer = require('parse-server').ParseServer;

var app = express();

var port = process.env.PORT || 1337;

// Specify the connection string for your mongodb database 
// and the location to your Parse cloud code 
var api = new ParseServer({
  databaseURI: 'mongodb://IBM_MONGO_DB',
  cloud: './cloud/main.js', // Provide an absolute path 
  appId: 'MYAPPID',
  masterKey: 'MYMASTER_KEY', //Add your master key here. Keep it secret! 
  serverURL: 'http://localhost:' + port + '/parse' // Don't forget to change to https if needed 
});
app.use('/parse', api);
app.get('/', function(req, res) {
  res.status(200).send('Express is running here.');
});

app.listen(port, function() {
  console.log('parse-server-example running on port ' + port + '.');
});

回应：

/Applications/MAMP/htdocs/IBM_bluemix/Development/my_node_app/node_modules/parse-server/lib/PromiseRouter.js:48
        throw _iteratorError;
              ^
ReferenceError: Symbol is not defined
    at PromiseRouter.merge (/Applications/MAMP/htdocs/IBM_bluemix/Development/my_node_app/node_modules/parse-server/lib/PromiseRouter.js:33:40)
    at new ParseServer (/Applications/MAMP/htdocs/IBM_bluemix/Development/my_node_app/node_modules/parse-server/lib/index.js:137:10)
    at Object.<anonymous> (/Applications/MAMP/htdocs/IBM_bluemix/Development/my_node_app/app.js:10:11)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:906:3

这是PromiseRouter.js中抛出错误的函数

PromiseRouter.prototype.merge = function (router) {
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = router.routes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var route = _step.value;

      this.routes.push(route);
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }
};

这就是我的全部

Answer 1

找不到Symbol的原因是因为它是当前Node.js构建中不支持的ES6 feature。检查以确保Node.js运行时至少为v4（see compatibility here）。

确保Node.js在Bluemix上构建至少运行v4.0的简单方法是在应用的engine文件中定义package.json变量：

{ "engines" : { "node" : ">=4.0" } }

更新package.json文件后，将您的应用程序重新推送到Bluemix，它将使用您定义的Node.js版本构建它

解析服务器迁移到IBM bluemix

1 个答案: