eslint-plugin-no-array-reduce

eslint-plugin-no-array-reduce

ESLint rule to disallow Array.reduce() method.

To keep you code easy to read and maintainable do yourself and other developers a favour by disallowing Array.reduce() method.

Install

npm install --save-dev eslint-plugin-no-array-reduce

Then extend eslint config:

{
  "extends": [
    // ...
    "plugin:no-array-reduce/recommended"
  ]
}

Fail

const groceries = [
  { name: 'milk', type: 'dairy' },
  { name: 'cheese', type: 'dairy' },
  { name: 'beef', type: 'meat' },
];

// Filter dairy products
const dairy = groceries.reduce((acc, grocery) => (grocery.type === 'dairy' ? acc.concat(grocery) : acc), []);

Pass

// Filter dairy products
const dairy = groceries.filter((grocery) => grocery.type === 'dairy');

Subjectively there are cases where you might want use it with eslint-disable but strongly recommended you write it differently.

Discussions, debates and other resources:

• Jake Archibald
• Ekrem Aktaş - Write more readable JavaScript

Contributing

All contributions are welcome!