unicorn/no-unreadable-iife Pedantic

What it does

This rule disallows IIFEs with a parenthesized arrow function body.

Why is this bad?

IIFEs with a parenthesized arrow function body are unreadable.

Examples

Examples of incorrect code for this rule:

const foo = (bar => (bar ? bar.baz : baz))(getBar());

const foo = ((bar, baz) => ({ bar, baz }))(bar, baz);

Examples of correct code for this rule:

const bar = getBar();
const foo = bar ? bar.baz : baz;

const getBaz = bar => (bar ? bar.baz : baz);
const foo = getBaz(getBar());

const foo = (bar => {
  return bar ? bar.baz : baz;
})(getBar());

How to use

To enable this rule in the CLI or using the config file, you can use:

CLI

oxlint --deny unicorn/no-unreadable-iife

Config (.oxlintrc.json)

{
  "rules": {
    "unicorn/no-unreadable-iife": "error"
  }
}

References

• Rule Source