realm/SwiftLint

isolation parameter for modifier_order rule

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#6,164 opened on Jul 14, 2025

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enhancementgood first issue

Description

New Issue Checklist

Feature or Enhancement Proposal

I implemented my own preferred_modifier_order and I wanted to specify the order for isolated and nonisolated keywords, but I didn't find that they were available in the current implementation or documentation, and I didn't find any open issues.

I think a parameter like isolation would be a welcome addition for fine-tuning the modifier order.

Contributor guide

Tech stack
swift
Domain
tooling
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.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Swift knowledgeSwiftLint rule configuration
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Review the current modifier order rule configuration in Source/SwiftLintBuiltInRules/Rules/RuleConfigurations/ModifierOrderConfiguration.swift to understand how existing parameters like `preferred modifier order` are implemented. Then add a new `isolation` parameter that allows users to specify the order of 'isolated' and 'nonisolated' keywords. Update documentation at https://realm.github.io/SwiftLint/modifier order.html and add tests for the new parameter.