to be canonical

• <object> to be canonical

Asserts that an object has its properties defined in sorted order at all levels.

expect({ a: 123, b: 456 }, 'to be canonical');
expect([456, { a: 123 }], 'to be canonical');

In case of a failing expectation you get the following output:

expect([456, { b: 456, a: 123 }], 'to be canonical');

expected [ 456, { b: 456, a: 123 } ] to be canonical