Sha256: afe08dc9efa5f96e83fa7ce127956c173bc816b9ce87e991c38d15a1eaf6d200
Contents?: true
Size: 815 Bytes
Versions: 29
Compression:
Stored size: 815 Bytes
Contents
'use strict';
var $ = require('../internals/export');
var IS_PURE = require('../internals/is-pure');
var anObject = require('../internals/an-object');
var aFunction = require('../internals/a-function');
// `Set.prototype.update` method
// https://github.com/tc39/proposal-collection-methods
$({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
update: function update(key, callback /* , thunk */) {
var map = anObject(this);
var length = arguments.length;
aFunction(callback);
var isPresentInMap = map.has(key);
if (!isPresentInMap && length < 3) {
throw TypeError('Updating absent value');
}
var value = isPresentInMap ? map.get(key) : aFunction(length > 2 ? arguments[2] : undefined)(key, map);
map.set(key, callback(value, key, map));
return map;
}
});
Version data entries
29 entries across 28 versions & 9 rubygems