Microsoft/TypeScript

Consider exporting 'getOwnEmitOutputFilePath'

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#4,320 opened on Aug 14, 2015

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Domain: APIHelp WantedSuggestion

Description

Courtesy of @ivogabe on Gitter on August 14, 2015 5:26 AM:

Question about the API, is there an exported method that returns the output filename of a source file? It should follow the options outDir & rootDir of course.

Contributor guide

Tech stack
typescript
Domain
apideveloper experience
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
TypeScript compiler architectureemit output path logic
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Start by exploring the TypeScript compiler source code in the repository, particularly the file `src/compiler/emitter.ts` or `src/services/jsDoc.ts` to understand how emit output paths are computed. Look at existing exported functions in `src/typescript.ts` to see the pattern for adding new public APIs. The goal is to export a function that returns the output filename given a source file, considering `outDir` and `rootDir`. If no recent changes have addressed this, implement the export and add appropriate tests.