unicorn/no-instanceof-array Pedantic

🛠️ An auto-fix is available for this rule.

Require Array.isArray() instead of instanceof Array.

The instanceof Array check doesn't work across realms/contexts, for example, frames/windows in browsers or the vm module in Node.js.

Examples of incorrect code for this rule:

javascript

array instanceof Array;
[1, 2, 3] instanceof Array;

Examples of correct code for this rule:

javascript

Array.isArray(array);
Array.isArray([1, 2, 3]);

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/no-instanceof-array

json

{
  "rules": {
    "unicorn/no-instanceof-array": "error"
  }
}