refactor: drop findLastIndex, update lib to es2023

Author: 9romise

src/html/parser.ts

@@ -4,7 +4,6 @@
  * See LICENSE file in root directory for full license.
  */
 import assert from "assert"
-import findLastIndex from "lodash/findLastIndex"
 import type {
     ErrorCode,
     HasLocation,
@@ -700,8 +699,7 @@ export class Parser {
     protected EndTag(token: EndTag): void {
         debug("[html] EndTag %j", token)
 
-        const i = findLastIndex(
-            this.elementStack,
+        const i = this.elementStack.findLastIndex(
             (el) => el.name.toLowerCase() === token.name,
         )
         if (i === -1) {

tsconfig.json

@@ -12,7 +12,7 @@
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
     "inlineSources": true,
-    "lib": ["es2015"],
+    "lib": ["es2023"],
     "module": "commonjs",
     "moduleResolution": "node",
     "newLine": "LF",