Add error locations to TSError

[paulbrimicombe]

Desired Behavior

When a TSError is thrown it would be very helpful to be able to programatically extract the location of the compilation error(s) in the source code.

Is this request related to a problem?

• I maintain a library that compiles TypeScript snippets in markdown files: https://github.com/bbc/typescript-docs-verifier
• I use ts-node to do the compilation because it provides a really simple and easy-to-use API (thanks! 🎉)
• If the compilation of a snippet fails, the library displays the code snippet with the lines with compilation errors highlighted.
• Currently I have to parse the diagnosticText to do this which is problematic:
  • The message format keeps changing which breaks the parser
  • I have to handle both coloured and non-coloured outputs which are formatted slightly differently

Alternatives you've considered

• N/A

Additional context

• N/A