blob: dded28cb5ff469ffd15f814fdb99ae87d494ea8a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
|
'use strict';
var anObject = require('../internals/an-object');
// `Map.prototype.emplace` method
// https://github.com/thumbsupep/proposal-upsert
module.exports = function emplace(key, handler) {
var map = anObject(this);
var value = (map.has(key) && 'update' in handler)
? handler.update(map.get(key), key, map)
: handler.insert(key, map);
map.set(key, value);
return value;
};
|
