Add DOM shims

Description

This issue does not include a description.

Contributor guide

Tech stack

javascript

Domain

frontendtooling

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.

stale

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

unclear

Prerequisites

JavaScriptDOM APIPrepack internals

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

20

Research direction

Check the issue comments for any discussion on specific DOM shims needed. Look for any linked documents or prior attempts. Since the body is empty, understanding Prepack's existing DOM handling and the requirements from the title is crucial.