Microsoft/TypeScript

Show type info of yield

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#32,283 opened on Jul 7, 2019

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 (9 comments) (0 reactions) (0 assignees)TypeScript (48,455 stars) (6,726 forks)batch import
Domain: LS: Quick InfoEffort: ModerateExperience EnhancementHelp WantedNeeds Proposal

Description

@rbuckton yield keyword should show its argument type and return type when a cursor is put on there.

Contributor guide

Tech stack
typescript
Domain
developer experiencetooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
TypeScript compiler internalslanguage service APIyield expression handling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate how TypeScript's language service provides hover information for other keywords like 'await' or 'return'. Look at the implementation in the language service source code, particularly in files like `src/services/hover.ts` or `src/services/utilities.ts`. The issue requests showing argument type and return type for `yield`. Check if there is any existing handling for generator contexts. Review comments in the issue for any maintainer suggestions.