Warn about data-* trigger attributes on <label>s

Description

Contributor guide

Tech stack

javascripthtml

Domain

frontend

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.

1-3 hours

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.

clear

Prerequisites

Basic knowledge of Bootlint's plugin systemFamiliarity with linting in general

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

75

Research direction

Review the referenced issue (twbs/bootstrap#17563) to understand why data * attributes on <label> are problematic. Examine existing Bootlint rules in the repository to learn the pattern for adding new lint checks. Implement a rule that detects <label> elements with data * attributes and emits a warning. Add tests following the project's testing conventions.