unicorn/prefer-array-flat-map Style

🛠️ An auto-fix is available for this rule.

Prefers the use of .flatMap() when map().flat() are used together.

It is slightly more efficient to use .flatMap(…) instead of .map(…).flat().

javascript

const bar = [1, 2, 3].map((i) => [i]).flat(); // ✗ fail

const bar = [1, 2, 3].flatMap((i) => [i]); // ✓ pass

How to use

To enable this rule in the CLI or using the config file, you can use:

CLIConfig (.oxlintrc.json)

bash

oxlint --deny unicorn/prefer-array-flat-map

json

{
  "rules": {
    "unicorn/prefer-array-flat-map": "error"
  }
}