How to get error information relating to TypeScript file lines number in node.js?

Question

I am using TypeScript for my node.js backend development. Whenever I get an error in node.js it shows me the line number relating to the transpiled JavaScript (.js) files, not the TypeScript (.ts) files.

If you have used ionic, we get the error corresponding to the typescript file there.

Is there any way I get error line number relating to my typescript file? If yes please explain how and what changes I need to do to the config file.

Answer 1

Install source-map-support package.

$ npm install --save-dev source-map-support

Add this line in the entry point of node.js

require('source-map-support').install();

In your tsconfig.json,

{
   "compilerOptions": {
      "sourceMap": true
   }
}

Ref: https://github.com/evanw/node-source-map-support#typescript-demo