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node's deepEqual and deepStrictEqual algorithm.

Tests for deep equality. Primitive values are compared with the equal comparison operator ( == ). This only considers enumerable properties. It does not test object prototypes, attached symbols, or non-enumerable properties. This can lead to some potentially surprising results. If strict is true then Primitive values are compared with the strict equal comparison operator ( === ).

Kind: Exported function
Returns: boolean - true if actual and expected are deemed equal, otherwise false.
See: https://nodejs.org/api/assert.html

Example

import deepEqual from 'deep-equal-x';

deepEqual(Error('a'), Error('b'));
// => true
// This does not return `false` because the properties on the  Error object
// are non-enumerable:

deepEqual(4, '4');
// => true

deepEqual({a: 4, b: '1'}, {b: '1', a: 4});
// => true

deepEqual(new Date(), new Date(2000, 3, 14));
// => false

deepEqual(4, '4', true);
// => false