Microsoft/TypeScript

Port from old compiler code to emit compilation flags into the source map

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#2,858 opened on Apr 22, 2015

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Description

The 1.0 (or 1.1) compiler emitted the compilation flags into the source map. We added this for hypothetical tooling scenarios, where browser tools could trigger a simple recompilation of a file discovered by a source map, in the case where it was live edited.

This is not a high priority as those scenarios aren't currently planned, but perhaps it would be a simple port of work already done.

Contributor guide

Research direction
Search the TypeScript compiler source for the old code that emitted compilation flags into source maps (likely in the emitter or source map writer). Understand the data flow and replicate the logic in the current compiler version. Ensure the flags are embedded in the source map appropriately.
Tech stack
typescript
Domain
compilers
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitTypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65