`Immutable` type

Description

Contributor guide

Tech stack

typescript

Domain

developer 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.

half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

fresh

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

needs investigation

Prerequisites

TypeScript genericsread linked PR #479

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

20

Research direction

Review the linked PR #479 to understand the previous work on Immutable types. Investigate the type fest repository for existing type utilities and patterns. Propose a design for an Immutable type that makes all properties readonly and recursively applies to nested objects. Consider whether to make it deep or shallow and how to handle arrays and other structures.