sindresorhus/type-fest

Proposal: `ValueOfDeep<Type, 'key.deepKey'>`

Open

#822 opened on Mar 1, 2024

View on GitHub
 (2 comments) (5 reactions) (0 assignees)TypeScript (471 forks)batch import
component:pathshelp wantedtype addition

Repository metrics

Stars
 (12,328 stars)
PR merge metrics
 (Avg merge 3d 5h) (11 merged PRs in 30d)

Description

Short summary

Given: Type: Any type

Provide: Create a type based on the ValueOf of a deeply nested property.

Potential definition

type ValueOfDeep<Type, PathUnion extends Paths<T>>

Use case

Selecting deeply nested objects to be the value of a new type. This may be relevant for auto-generated types where the deep objects aren't unique types but are used independently on the application.

Contributor guide

Research direction
Review the existing Paths type implementation and design ValueOfDeep to extract the value type at a given path.
Tech stack
typescript
Domain
tooling
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
TypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70