Couldn't override equals and hash of Map

[Deilan]

A very simple test couldn't pass:

var Map = require("collections/map");

var equals = function(a, b) {
    return a.x === b.x;
};
var hash = function(a) {
    return a.x;
}
var map = new Map([], equals, hash);
var key1 = {x: 1};
var key2 = {x: 1};
map.set(key1, 42);
console.log(map.has(key2));

Expected output: true

Actual output: false

lib v. 5.1.2, Node.js 8.9.1, macOS 10.13.4.

[hthetiot]

I dont think it is supported.

[asiraky]

But it's documented:

"The optional equals and hash override the contentEquals and contentHash properties that operate on the keys of the map to determine whether keys are equivalent and where to store them."

http://www.collectionsjs.com/map