Rule proposal: `prefer-change-array-by-copy` · sindresorhus/eslint-plugin-unicorn#1514

2021-09-08T02:26:34.000Z

["Change Array by copy" proposal](https://github.com/tc39/proposal-change-array-by-copy#change-array-by-copy) ## Fail ```js array.reverse(); ``` ```js array.sort(); ``` ```js const array = [...foo]; array.splice(0, 1); ``` ```js const array = [...foo]; array[1] = 'changed'; ``` ## Pass ```js array = array.toReversed(); ``` ```js array = array.toSorted(); ``` ```js const array = foo.toSpliced(0, 1); ``` ```js const array = foo.with(1, 'changed'); ```

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help wantednew rule

説明

"Change Array by copy" proposal

Fail

array.reverse();

array.sort();

const array = [...foo];
array.splice(0, 1);

const array = [...foo];
array[1] = 'changed';

Pass

array = array.toReversed();

array = array.toSorted();

const array = foo.toSpliced(0, 1);

const array = foo.with(1, 'changed');

コントリビューターガイド

技術スタック: javascriptnodejs
領域: toolingdeveloper experience
Issue 種別: feature
難度: 3
推定時間: 3-5 days
活動状況: stale
明確さ: clear
前提条件: ESLint rule developmentAST traversalJavaScript array methods
初心者向け度: 40
調査方針: Study existing rules in the eslint plugin unicorn repository, especially those that detect mutable array methods like 'prefer array flat map' or 'no array method this argument'. Examine the AST selectors for calls to reverse(), sort(), splice(), and direct array index assignment. Check the issue comments for any consensus on the rule's scope and whether it should also handle cases like `array[1] = 'changed'`.