v4.0.0 doesn't give file/line for wrong syntax. #2762

bobef · 2015-09-09T08:03:33Z

I'm happily moving some of my stuff to ES6 but when I wrong the syntax I get SyntaxError which goes to my on( 'unhandledException' ) and I print it to get message like this. Not very helpful.

SyntaxError: Unexpected identifier
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:413:25)
    at Object.Module._extensions..js (module.js:452:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (/Users/bobi/Dev/prototype-js/tests/tests.js:11:1)
    at Module._compile (module.js:434:26)
    at Object.Module._extensions..js (module.js:452:10)

The text was updated successfully, but these errors were encountered:

dodev · 2015-09-09T08:50:05Z

You can start your investigation by examining what's on line 11 in /Users/bobi/Dev/prototype-js/tests/tests.js

bobef · 2015-09-09T08:52:44Z

I did and my investigation led to the conclusion that SyntaxError doesn't contain file/line information, so I posted here. Line 11 is console.error( e.stack ), and e is the exception from on( 'unhandledException' ). And e.lineNumber and the others described in MDN are undefined.

dodev · 2015-09-09T09:33:51Z

Try removing the unhandled exception callback. I think, if it's a syntax error, you'll get a cleaner stack trace, because the interpreter will break on the exact line and column, where the unexpected identifier was met.

Trott · 2015-09-09T20:16:15Z

Can you put the first 15 or so lines of /Users/bobi/Dev/prototype-js/tests/tests.js in a gist and link to it here?

bobef · 2015-09-10T04:39:33Z

You can see the whole file if you like. https://github.com/Perennials/prototype-js/blob/master/tests/tests.js

bobef · 2015-09-10T04:52:19Z

I will give way to reproduce later when I get to the office.

bobef · 2015-09-10T06:20:28Z

So here is how to reproduce:

mkdir dir
cd dir
npm install https://github.com/Perennials/prototype-js/tarball/master
cd node_modules/Prototype
npm install
### Break the syntax somewhere. Edit tests/Function.js:120 and change it to "iface1_decl {}"
npm test

And the line that prints the error is nodule_modules/Prototype/node_modules/Unitest/Unitest.js:569. And if you remove the uncaughtException handler the error is not printed for some reason.

defunctzombie · 2015-09-12T02:13:59Z

I too ran into this issue when trying to process a syntax error after adding an uncaughtException handler. It seems that behavior prior to v4 might have been that the syntax error information (filename and line number) were printed to stderr regardless of the uncaughtException handler (the exception still given to the handler tho).

I don't see a way to get the fileName or lineNumber information from the error. Using toString() simply results in the message SyntaxError: Unexpected identifier.

Seems that behavior might be slightly different with these errors on startup versus before.

defunctzombie · 2015-10-02T19:15:04Z

Any updates on this? It makes it rather multi-step (annoying) to debug syntax error when using tools like node-dev or even with your own uncaughtException handlers. This might not be obvious to users.

/cc @bnoordhuis @rvagg @mikeal

Fishrock123 · 2015-10-07T05:19:19Z

cc @nodejs/collaborators could we get more eyes on this?

Qard · 2015-10-07T05:42:33Z

This is present in v3 too.

Also, the line number in the stack trace is like that in all versions of node. What's wrong is that the extra context info lines are missing.

v3/v4:

> [email protected] test /node_modules/Prototype
> node ./tests/tests.js

SyntaxError: Unexpected token {
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:413:25)
    at Object.Module._extensions..js (module.js:448:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (/node_modules/Prototype/tests/tests.js:11:1)
    at Module._compile (module.js:430:26)
    at Object.Module._extensions..js (module.js:448:10)

others:

> [email protected] test /node_modules/Prototype
> node ./tests/tests.js

/node_modules/Prototype/tests/Function.js:120
        iface1_decl {}
                    ^
SyntaxError: Unexpected token {
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:413:25)
    at Object.Module._extensions..js (module.js:448:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (/node_modules/Prototype/tests/tests.js:11:1)
    at Module._compile (module.js:430:26)
    at Object.Module._extensions..js (module.js:448:10)

Notice the bit with the ^ in it. Probably something changed in V8. Not sure if there's anything we can do about it, but I'll let some others have a look.

domenic · 2015-10-07T17:31:54Z

This is probably a result of the change in #2108. Strange, I thought we had tests for this...

defunctzombie · 2015-10-08T16:21:32Z

Is this going to be considered a regression?

Currently, when a file with a syntax error is imported in the REPL, no information is provided on the error's location. This commit adds the error's location to the stack trace. Refs: nodejs#2762 Refs: nodejs#3411 Refs: nodejs#3784 PR-URL: nodejs#4013 Reviewed-By: Ben Noordhuis <[email protected]>

Currently, when a file with a syntax error is imported in the REPL, no information is provided on the error's location. This commit adds the error's location to the stack trace. Refs: #2762 Refs: #3411 Refs: #3784 PR-URL: #4013 Reviewed-By: Ben Noordhuis <[email protected]>

Currently, when a file with a syntax error is imported in the REPL, no information is provided on the error's location. This commit adds the error's location to the stack trace. Refs: nodejs#2762 Refs: nodejs#3411 Refs: nodejs#3784 PR-URL: nodejs#4013 Reviewed-By: Ben Noordhuis <[email protected]>

Currently, when a file with a syntax error is imported in the REPL, no information is provided on the error's location. This commit adds the error's location to the stack trace. Refs: #2762 Refs: #3411 Refs: #3784 PR-URL: #4013 Reviewed-By: Ben Noordhuis <[email protected]>

satya-dash · 2016-02-20T12:50:10Z

function buildBundle(args, config, output = outputBundle) {
^

SyntaxError: Unexpected token =
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:404:25)
at loader (/Users/rajesh/iosapp/adminLogin/node_modules/babel-register/lib/node.js:130:5)
at Object.require.extensions.(anonymous function) as .js
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Module.require (module.js:366:17)
at require (module.js:385:17)
at Object. (bundle.js:11:21)
at Module._compile (module.js:425:26)

jasnell · 2016-03-22T06:27:28Z

@nodejs/collaborators ... any further thoughts on this?

cjihrig · 2016-03-22T12:53:59Z

@jasnell I believe this should be fixed in master.

jasnell · 2016-03-22T14:38:22Z

Closing then, can reopen if it proves necessary.

Currently, when a file with a syntax error is imported in the REPL, no information is provided on the error's location. This commit adds the error's location to the stack trace. Refs: nodejs#2762 Refs: nodejs#3411 Refs: nodejs#3784 PR-URL: nodejs#4013 Reviewed-By: Ben Noordhuis <[email protected]>

mrahulreddy · 2017-02-24T12:13:17Z

How can this issue be closed, without a solution over it?
Someone, please help how to get rid of this?

SyntaxError: Unexpected token ... at exports.runInThisContext (vm.js:53:16) at Module._compile (module.js:373:25) at Object.Module._extensions..js (module.js:416:10) at Module.load (module.js:343:32) at Function.Module._load (module.js:300:12) at Module.require (module.js:353:17) at require (internal/module.js:12:17) at Object.<anonymous> (C:\Users\Rahul Reddy\AppData\Roaming\npm\node_modules\angular-cli\node_modules\@ngtools\json-schema\src\index.js:2:30) at Module._compile (module.js:409:26) at Object.Module._extensions..js (module.js:416:10)

gibfahn · 2017-02-24T12:28:12Z

@mrahulreddy what version of Node did you see this with? If the issue has been fixed on master, it should be backported to v7.x and then v6.x and v4.x later.

Could you check whether the latest nightly builds give the error for you? You can find them on https://nodejs.org/download/nightly/v8.0.0-nightly201702238e8fbd80d0/

mrahulreddy · 2017-02-24T12:40:38Z

Hello @gibfahn:
I appreciate your quick reply,

I am using v4.4.7.

Even ng version gives the same error.

gibfahn · 2017-02-24T13:10:59Z

@cjihrig

I believe this should be fixed in master.

Do you know which PRs should have fixed it?

@mrahulreddy the question is whether the changes have been backported to the latest v4 or v6. v4.4.7 definitely won't work, try v4.8.0 (the latest v4), or the latest v6 or v7.

mikermcneil · 2017-03-16T19:06:39Z

I just verified that this is addressed in node 6 (I tested w/ 6.9.5). The pretty-printed output about the syntax error is included at the top of .stack, followed by the standard name: message\nraw and dirty stack stuff.

Specifically:

In Node 4.3.0 I get:

error: A hook (`userconfig`) failed to load!
error: Error: Attempted to `require('/Users/mikermcneil/code/inabottle/config/datastores.js')`, but an error occurred:
--
SyntaxError: Unexpected token ILLEGAL
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:374:25)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at /Users/mikermcneil/code/include-all/lib/help-include-all-sync.js:293:33
    at Array.forEach (native)
    at _recursivelyIncludeAll (/Users/mikermcneil/code/include-all/lib/help-include-all-sync.js:178:11)
--

Whereas in Node v6.9.5, I get:

error: A hook (`userconfig`) failed to load!
error: Error: Attempted to `require('/Users/mikermcneil/code/inabottle/config/datastores.js')`, but an error occurred:
--
/Users/mikermcneil/code/inabottle/config/datastores.js:19
    adapter: 2#_ r32equire('sails-mysql'),
                   ^
SyntaxError: Invalid or unexpected token
    at Object.exports.runInThisContext (vm.js:76:16)
    at Module._compile (module.js:542:28)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at /Users/mikermcneil/code/include-all/lib/help-include-all-sync.js:293:33
    at Array.forEach (native)
--

softberry · 2018-02-15T13:35:21Z

Make sure that you have installed latest LTS version of nodeJS from https://nodejs.org/
As described in package.json
`
"engines": {

"node": ">=6"

}`

mscdex added the question Issues that look for answers. label Sep 9, 2015

nouex mentioned this issue Oct 19, 2015

SyntaxError objects should contain information about where the syntax error happened #3411

Closed

cjihrig mentioned this issue Nov 23, 2015

util,src: allow lookup of hidden values #3988

Merged

tlancina mentioned this issue Feb 2, 2016

Cryptic exception when there is an error in ionic.config.js (ionic2) ionic-team/ionic-framework#5293

Closed

jasnell closed this as completed Mar 22, 2016

emmoistner mentioned this issue Mar 9, 2017

Feature/verbose handler loader dherault/serverless-offline#209

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v4.0.0 doesn't give file/line for wrong syntax. #2762

v4.0.0 doesn't give file/line for wrong syntax. #2762

bobef commented Sep 9, 2015

dodev commented Sep 9, 2015

bobef commented Sep 9, 2015

dodev commented Sep 9, 2015

Trott commented Sep 9, 2015

bobef commented Sep 10, 2015 via email

bobef commented Sep 10, 2015 via email

bobef commented Sep 10, 2015

defunctzombie commented Sep 12, 2015

defunctzombie commented Oct 2, 2015

Fishrock123 commented Oct 7, 2015

Qard commented Oct 7, 2015

domenic commented Oct 7, 2015

defunctzombie commented Oct 8, 2015

satya-dash commented Feb 20, 2016

jasnell commented Mar 22, 2016

cjihrig commented Mar 22, 2016

jasnell commented Mar 22, 2016

mrahulreddy commented Feb 24, 2017

gibfahn commented Feb 24, 2017

mrahulreddy commented Feb 24, 2017

gibfahn commented Feb 24, 2017

mikermcneil commented Mar 16, 2017

softberry commented Feb 15, 2018

v4.0.0 doesn't give file/line for wrong syntax. #2762

v4.0.0 doesn't give file/line for wrong syntax. #2762

Comments

bobef commented Sep 9, 2015

dodev commented Sep 9, 2015

bobef commented Sep 9, 2015

dodev commented Sep 9, 2015

Trott commented Sep 9, 2015

bobef commented Sep 10, 2015 via email

bobef commented Sep 10, 2015 via email

bobef commented Sep 10, 2015

defunctzombie commented Sep 12, 2015

defunctzombie commented Oct 2, 2015

Fishrock123 commented Oct 7, 2015

Qard commented Oct 7, 2015

domenic commented Oct 7, 2015

defunctzombie commented Oct 8, 2015

satya-dash commented Feb 20, 2016

jasnell commented Mar 22, 2016

cjihrig commented Mar 22, 2016

jasnell commented Mar 22, 2016

mrahulreddy commented Feb 24, 2017

gibfahn commented Feb 24, 2017

mrahulreddy commented Feb 24, 2017

gibfahn commented Feb 24, 2017

mikermcneil commented Mar 16, 2017

softberry commented Feb 15, 2018