unicorn/prefer-negative-index Style
What it does
Prefer using a negative index over .length - index when possible.
Why is this bad?
Using a negative index with at or slice is generally more readable and concise than using .length - index.
Examples
Examples of incorrect code for this rule:
js
foo.slice(foo.length - 2, foo.length - 1);
foo.at(foo.length - 1);Examples of correct code for this rule:
js
foo.slice(-2, -1);
foo.at(-1);How to use
To enable this rule using the config file or in the CLI, you can use:
json
{
"rules": {
"unicorn/prefer-negative-index": "error"
}
}bash
oxlint --deny unicorn/prefer-negative-index