I am loading a Node.js module using require. This throws a Syntax Error (an Error object).
Is there a way to get the location in the file where the error occurred?
I can see the stack (below) but I don't have any location information. I know I can use substack's node-syntax-error, but is there a way to get similar location info from the Javascript Error object?
SyntaxError: Unexpected identifier
at Module._compile (module.js:437:25)
at Object.Module._extensions..js (module.js:467:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:362:17)
at require (module.js:378:17)
... // the rest is in my code
EDIT:
According to Vadim's comment below, yes that is what I am tempted to do. I see that node throws nice errors. Having a test.js
file that contains only abc
you get an error from node saying
ReferenceError: abc is not defined
at Object.<anonymous> (test.js:1:63)
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:901:3
Now the question is, is there a node API to do get this error (that the node module.js module uses) such that I don't have to child_process.spawn('node', ['test.js'])
?
You can simple run node
with file that contains SyntaxError and see console output.
Errors have a "stack" property that stores the stack trace.
try {
throw new Error("with some message");
}
catch(err) {
// print error's stack trace to stder
console.error(err.stack);
}
running this on a file called "/home/myusername/test.js"
node /home/myusername/test.js
will output the following
Error: with some message
at Object.<anonymous> (/home/myusername/test.js:2:11)
at Module._compile (module.js:449:26)
at Object.Module._extensions..js (module.js:467:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.runMain (module.js:492:10)
at process.startup.processNextTick.process._tickCallback (node.js:244:9)