module builtin struct map { m JS.Map len int } // Removes the mapping of a particular key from the map. [unsafe] pub fn (mut m map) delete(key voidptr) { #m.map.delete(key) } pub fn (m &map) free() {} #map.prototype[Symbol.iterator] = function () { return this.map[Symbol.iterator](); } #map.prototype.toString = function () { #function fmtKey(key) { return typeof key == 'string' ? '\'' + key + '\'' : key} #let res = '{' #for (const entry of this) { #res += fmtKey(entry[0]) + ': ' + entry[0]; #} #res += '}' #return res; #}