Rule proposal: `prefer-math-abs`

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Description

const a = b < 0 ? -b : b;
const a = b <= 0 ? -b : b;
const a = b < 0 ? 0 - b : b;
const a = b <= 0 ? 0 - b : b;

const a = b > 0 ? b : -b;
const a = b >= 0 ? b : -b;

const a = b < 0 ? b * -1 : b;

if (number > POSITIVE_CONSTANT || number < -POSITIVE_CONSTANT) {}

const a = Math.abs(b);

if (Math.abs(number) > POSITIVE_CONSTANT) {}

Contributor guide

Research direction

Implement a new ESLint rule that suggests using Math.abs() for ternary patterns that compute absolute value.

Tech stack

javascript

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.

Fresh

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

Clear

Prerequisites

JavaScript

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

70