When the following message is displayed by Visual Studio Code for an angular project, it’s time to switch from TSMint to ESLint, as TSLint has been deprecated for a while now.

Not using the local TSLint version found for 'c:/Users/nicol/Documents/GitHub/Bartleby/frontend/src/app/create-dossier/create-dossier.component.ts'
 To enable code execution from the current workspace you must enable workspace library execution.

This documentation from Microsoft describes the process : https://code.visualstudio.com/api/advanced-topics/tslint-eslint-migration