How to keep correct line numbers using node js and babel

I have the following setup and there is a problem with my error / stack trace, did I miss something?

package.json is as follows:

{ "name": "xxxxxx", "main": "server.js", "private": true, "scripts": { "start": "nodemon --exec ./node_modules/.bin/babel-node server.js" }, "dependencies": { "babel": "^6.5.2", "babel-cli": "^6.6.5", "babel-preset-es2015": "^6.6.0", "babel-preset-react": "^6.5.0", "babel-preset-stage-0": "^6.5.0", "babel-runtime": "^6.6.1" } } 

.babelrc looks like this:

 { presets: ["es2015", "stage-0", "react"], sourceMap: 'inline', retainLines: true } 

server.js looks like this:

 let aVar = ''; throw new Error('some error'); import errorHandler from './app/middlewares/error_handler'; 

My stack trace is crazy

 module.js:341 throw err; ^ Error: Cannot find module 'bugsnag' at Function.Module._resolveFilename (module.js:339:15) at Function.Module._load (module.js:290:25) at Module.require (module.js:367:17) at require (internal/module.js:16:19) at Object.<anonymous> (/home/projectName/lib/util/error.js:14:113) at Module._compile (module.js:413:34) at loader (/home/projectName/node_modules/babel-register/lib/node.js:126:5) at Object.require.extensions.(anonymous function) [as .js] (/home/projectName/node_modules/babel-register/lib/node.js:136:7) at Module.load (module.js:357:32) at Function.Module._load (module.js:314:12) at Module.require (module.js:367:17) at require (internal/module.js:16:19) at Object.<anonymous> (/home/projectName/app/middlewares/error_handler.js:11:91) at Module._compile (module.js:413:34) at loader (/home/projectName/node_modules/babel-register/lib/node.js:126:5) at Object.require.extensions.(anonymous function) [as .js] (/home/projectName/node_modules/babel-register/lib/node.js:136:7) at Module.load (module.js:357:32) at Function.Module._load (module.js:314:12) at Module.require (module.js:367:17) at require (internal/module.js:16:19) at Object.<anonymous> (/home/projectName/server.js:15:22) at Module._compile (module.js:413:34) 

As you can see, this does not look right and is really hard to follow. I am sure there is a way to fix this.

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1 answer

It looks like you are missing the "bugsnag" module. Try:

 npm install -g bugsnag 
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