📝 Disallow the use of objects as default parameters.
💼 This rule is enabled in the following configs: ✅ recommended, ☑️ unopinionated.
Default parameters should not be passed to a function through an object literal. The foo = {a: false} parameter works fine if only used with one option. As soon as additional options are added, you risk replacing the whole foo = {a: false, b: true} object when passing only one option: {a: true}. For this reason, object destructuring should be used instead.
// ❌
function foo({a} = {a: false}) {}
// ✅
function foo(options) {
const {a} = {a: false, ...options};
}// ❌
const abc = (foo = {a: false, b: 123}) => {};
// ✅
const foo = ({a = false, b = 123}) => {};// ✅
const abc = (foo = {}) => {};// ✅
const abc = (foo = false) => {};