Add TS Server API for mapping TS file to output file

[mjbvz]

Search Terms

• Debug / debugger
• compile
• tsserver

Problem

VS Code would like to make it easy to debug the active TS file just by pressing F5. To implement this, we need a way to map from a TypeScript file to its JavaScript output.

See microsoft/vscode#95544 (comment) for details

Proposal

Add a new TS Server API that takes a typescript file and returns the path to the output JavaScript file for it.

[RyanCavanaugh]

@sheetalkamat let's discuss at next week's VS Code sync