chore: remove map_set and map_get (#12219)

Author: trueadm

packages/svelte/src/internal/client/dom/elements/attributes.js

@@ -1,6 +1,6 @@
 import { DEV } from 'esm-env';
 import { hydrating } from '../hydration.js';
-import { get_descriptors, get_prototype_of, map_get, map_set } from '../../utils.js';
+import { get_descriptors, get_prototype_of } from '../../utils.js';
 import {
 	AttributeAliases,
 	DelegatedEvents,
@@ -166,8 +166,8 @@ export function set_attributes(element, prev, next, lowercase_attributes, css_ha
 		next.class = '';
 	}
 
-	var setters = map_get(setters_cache, element.nodeName);
-	if (!setters) map_set(setters_cache, element.nodeName, (setters = get_setters(element)));
+	var setters = setters_cache.get(element.nodeName);
+	if (!setters) setters_cache.set(element.nodeName, (setters = get_setters(element)));
 
 	// @ts-expect-error
 	var attributes = /** @type {Record<string, unknown>} **/ (element.__attributes ??= {});

packages/svelte/src/internal/client/utils.js

@@ -13,33 +13,6 @@ export var object_prototype = Object.prototype;
 export var array_prototype = Array.prototype;
 export var get_prototype_of = Object.getPrototypeOf;
 
-/** @type {Map<any, any>} */
-var map_prototype = Map.prototype;
-var map_set_method = map_prototype.set;
-var map_get_method = map_prototype.get;
-
-/**
- * @template K
- * @template V
- * @param {Map<K, V>} map
- * @param {K} key
- * @param {V} value
- */
-export function map_set(map, key, value) {
-	map_set_method.call(map, key, value);
-}
-
-/**
- * @template K
- * @template V
- * @param {Map<K, V>} map
- * @param {K} key
- * @return {V}
- */
-export function map_get(map, key) {
-	return map_get_method.call(map, key);
-}
-
 /**
  * @param {any} thing
  * @returns {thing is Function}