Rule proposal: `prefer-string-repeat`

Repository metrics

Stars

5,022 stars (5,022 stars)

PR merge metrics

Avg merge 1d 16h (Avg merge 1d 16h)399 merged PRs in 30d (399 merged PRs in 30d)

Description

Array.from({length: 10 + 1}).join('*')

Array.from({length: 10}).fill('*').join('')

Array.from({length: 10}, () => '*').join('')

'*'.repeat(10)

String(foo).repeat(10)

Contributor guide

Research direction

Examine the ESLint rule structure in eslint plugin unicorn, understand how to use AST selectors to match Array.from patterns, and implement a rule that suggests using String.prototype.repeat.

Tech stack

javascript

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.

Clear

Prerequisites

JavaScript

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

65