microsoft/typescript-go

Corsa differences in `export=` module augmentation

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#3,481 opened on Apr 21, 2026

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Description

## Corsa changes how module augmentation interacts with export-equals and exported name visibility
augmentExportEquals2.errors.txt.diff
exportAssignmentMembersVisibleInAugmentation.errors.txt.diff

Contributor guide

Research direction
Compare the behavior of module augmentation with export= between the original TypeScript (corsa) and this Go port. Examine the two test error files to identify the specific differences in type checking.
Tech stack
gotypescript
Domain
compilers
Issue type
Bug
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.
1-3 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.
Needs investigation
Prerequisites
GoTypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60