Set equality

[jmakeig]

On Node 6.9:

const deepEqual = require("deep-equal"); // v1.0.1
deepEqual(new Set(['a', 'b', 'c']), new Set(['a', 'b', 'c'])); // true
deepEqual(new Set(['a', 'b', 'X']), new Set(['a', 'b', 'c'])); // true

Two sets should not be equal unless their constituents are the same. (Probably the same issue with Map instances too.)

[leguma]

Seconded. This lib cannot claim to be a replacement for a real deepEqual implementation without basic Map & Set support.

[ljharb]

@leguma v1 of this lib dates from before Map and Set existed, so it is, in fact a "real" deepEqual implementation - it just hasn't yet caught up to node's evolution of assert.deepEqual.