Function isDeepEqual

Compares two items by value and returns true if they are deeply equal.

Rules:

• Optimized for React components.
• Strict null comparison.
• No maximum depth.

See

makeIsDeepEqual

Example

isDeepEqual(1)(1); // true
isDeepEqual(1)(2); // false
isDeepEqual([1, 2, 3])([1, 2, 3]); // true
isDeepEqual([1, 2, 3])([1, 2, 4]); // false
isDeepEqual({ a: 1, b: [1, 2] })({ a: 1, b: [1, 2] }); // true
isDeepEqual({ a: 1, b: [1, 2] })({ a: 1, b: [1, 3] }); // false
isDeepEqual(new Date('2021-01-01'))(new Date('2021-01-01')); // true
isDeepEqual(new Date('2021-01-01'))(new Date('2021-01-02')); // false
isDeepEqual(/a/g)(/a/g); // true
isDeepEqual(/a/g)(/b/g); // false
isDeepEqual(null)(null); // true
isDeepEqual(null)(undefined); // false
isDeepEqual(undefined)(undefined); // true
isDeepEqual(
 { props: { children: 'Hello', $$typeof: Symbol, _owner: 'xxx' } }
)(
 { props: { children: 'Hello', $$typeof: Symbol, _owner: 'yyy' } }
); // true
Copy