Getting the error "Script node executed prematurely"

[adevegowda]

We are getting the following error with NodeJS proxy on Private Cloud version 4.17.01. I am using the request and response modules. The same NodeJS code works in my Public Cloud trial org.

{
  "fault": {
   "faultstring":"Script node executed prematurely: syntax error\nsyntax error\n at module.js:439\n at module.js:474\n at module.js:356\n at module.js:312\n at module.js:497\n at startup (trireme.js:142)\n at trireme.js:923\n",
    "detail":{
        "errorcode":"scripts.node.runtime.ScriptExitedError"
     }
  }
}

Can you help how to debug this issue ?

[adevegowda · Accepted solution]

1. Checked the Message Processor log (/opt/apigee/var/log/edge-message-processor/logs/system.log) and noticed the following exception and stack trace for the API request:

   org.mozilla.javascript.EvaluatorException: syntax error (/organization/environment/api/index.js#22)
   at org.mozilla.javascript.DefaultErrorReporter.runtimeError(DefaultErrorReporter.java:77) ~[rhino-1.7.7.1.jar:1.7.7.1]
   at org.mozilla.javascript.DefaultErrorReporter.error(DefaultErrorReporter.java:64) ~[rhino-1.7.7.1.jar:1.7.7.1]
   at org.mozilla.javascript.Parser.addError(Parser.java:188) ~[rhino-1.7.7.1.jar:1.7.7.1]
   at org.mozilla.javascript.Parser.addError(Parser.java:166) ~[rhino-1.7.7.1.jar:1.7.7.1]
   ...

2. This indicated that there is a syntax error at line # 22 of index.js file.
3. Checked the code at line # 22 in index.js :

   }, (error, response, body) => {

4. The cause for syntax error is the use of "=>" in 4.17.01. However, this syntax is supported in Public Cloud which has the latest code.
5. Modified the code as follows:

   }, function(error, response, body) {

With this change, I was able to resolve the error.

[rmishra]

As far as i know, arrow functions are not supported on Private Cloud yet. They are a part of ES6 and we are still at ES5