unicorn/no-useless-undefined Pedantic
What it does
Do not use useless undefined.
Why is this bad?
undefined is the default value for new variables, parameters, return statements, etc… so specifying it doesn't make any difference.
Examples
Examples of incorrect code for this rule:
javascript
let foo = undefined;Examples of correct code for this rule:
javascript
let foo;Configuration
This rule accepts a configuration object with the following properties:
checkArguments
type: boolean
default: true
Whether to check for useless undefined in function call arguments.
checkArrowFunctionBody
type: boolean
default: true
Whether to check for useless undefined in arrow function bodies.
How to use
To enable this rule in the CLI or using the config file, you can use:
bash
oxlint --deny unicorn/no-useless-undefinedjson
{
"rules": {
"unicorn/no-useless-undefined": "error"
}
}