unicorn/no-magic-array-flat-depth Restriction 
What it does 
Disallow magic numbers for Array.prototype.flat depth.
Why is this bad? 
Magic numbers are hard to understand and maintain. When calling Array.prototype.flat, it is usually called with 1 or infinity. If you are using a different number, it is better to add a comment explaining the depth.
Examples 
Examples of incorrect code for this rule:
javascript
array.flat(2);
array.flat(20);Examples of correct code for this rule:
javascript
array.flat(2 /* explanation */);
array.flat(1);
array.flat();
array.flat(Infinity);How to use 
To enable this rule in the CLI or using the config file, you can use:
bash
oxlint --deny unicorn/no-magic-array-flat-depthjson
{
  "rules": {
    "unicorn/no-magic-array-flat-depth": "error"
  }
}