understanding node.js error message - node.js

Question

Error initializing middleware
SyntaxError: Unexpected token ILLEGAL
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:387:25)
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
at Function.cls_wrapMethod [as _load] node_modules/newrelic/lib/shimmer.js:246:38)
at Module.require (module.js:367:17)
at require (internal/module.js:20:19)
at Object.<anonymous> api/services/chargeService.js:3:23)
at Module._compile (module.js:413:34)
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
at Function.cls_wrapMethod [as _load] node_modules/newrelic/lib/shimmer.js:246:38)
at Module.require (module.js:367:17)
at require (internal/module.js:20:19)
Unexpected token ILLEGAL seems I made a typo or forgot to comment out a line in one of my source files. but the error message is very unhelpful.
is there any generic tools for parsing messages like this?

Answer 1

This is callstack
Error initializing middleware <== graceful error message
SyntaxError: Unexpected token ILLEGAL <== raw error message
at exports.runInThisContext (vm.js:53:16) <== YOUR SCRIPT, CHECK HERE
at Module._compile (module.js:387:25) <== node script
at Object.Module._extensions.js (module.js) <== node script
at Module.load (module.js:357:32) <== node script
at Function.Module._load (module.js:314:12) <== node script
at Function.cls node_modules/.../shimmer.js) <== package script
at Module.require (module.js:367:17) <== node script
at require (internal/module.js:20:19) <== node script
at Object.<anonymous> api/services/chargeService.js:3:23) <== YOUR SCRIPT, CHECK HERE
at Module._compile (module.js:413:34) <== node script, etc
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
at Function.cls_wrapMethod [as _load] node_modules/newrelic/lib/shimmer.js:246:38)
at Module.require (module.js:367:17)
at require (internal/module.js:20:19)
Usually node scripts and npm packages don't throw unexpected exceptions, they have tests, so first of all you have to check your files
at exports.runInThisContext (vm.js:53:16)
This means exports.runInThisContext function in file vm.js was executed previously exception catched
at Object.<anonymous> api/services/chargeService.js:3:23)
Same as above, object getter or setter was executed in file chargeService at line 3 column 23 before exception catched