The Google Chrome console is failing to display the accurate line numbers for JavaScript errors

Currently, I find myself grappling with debugging in an angular project built with ionic framework. Utilizing ion-router-outlet, I attempt to troubleshoot using the Google Chrome console. Unfortunately, the console is displaying inaccurate line numbers making it immensely challenging to pinpoint and resolve any issues.

https://i.stack.imgur.com/jlsEQ.png

All errors are now being directed to main.js:1:anyline, which is far from helpful. I yearn for the days when bug indicators were precise and reliable. How can I overcome this obstacle? I appreciate any guidance you can offer.

In addition, here is a glimpse of the source window: https://i.stack.imgur.com/znLf1.png

Furthermore, upon adding a breakpoint to the formatted.main.js, I encounter the following error message: https://i.stack.imgur.com/VmjRP.png

javascriptangulartypescriptgoogle-chromeionic-framework

Answer №1

I successfully resolved the issue. In addition to the suggestion mentioned in the previous comment regarding enabling the "source map option" in Google Chrome console, it is important to ensure proper formatting of the angular.json file. For instance, I placed the options within the production configuration as shown below

"configurations": {
  "production": {
     "fileReplacements": [{
       "replace": "src/environments/environment.ts",
        "with": "src/environments/environment.prod.ts"
      }]
   },
   "optimization": false,
   "sourceMap": true,
   "namedChunks": true,
   "extractLicenses": false,
   "vendorChunk": false,
   "buildOptimizer": false
}

As a result, the ng serve command will not generate source maps. One approach that can be taken is to run it in production mode using 

ng serve --configuration production
. Alternatively, the options could be moved outside of the production layer.

Apologies for not providing enough source code initially, I mistakenly assumed the issue was more complex than it actually was.

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