unicorn/no-array-reverse Suspicious ​
What it does ​
Prefer using Array#toReversed() over Array#reverse().
Why is this bad? ​
Array#reverse() modifies the original array in place, which can lead to unintended side effects—especially when the original array is used elsewhere in the code.
Examples ​
Examples of incorrect code for this rule:
js
const reversed = [...array].reverse();Examples of correct code for this rule:
js
const reversed = [...array].toReversed();Configuration ​
This rule accepts a configuration object with the following properties:
allowExpressionStatement ​
type: boolean
default: true
This rule allows array.reverse() as an expression statement by default. Set to false to forbid Array#reverse() even if it's an expression statement.
Examples of incorrect code for this rule with this option set to false:
js
array.reverse();How to use ​
To enable this rule in the CLI or using the config file, you can use:
bash
oxlint --deny unicorn/no-array-reversejson
{
"rules": {
"unicorn/no-array-reverse": "error"
}
}