chore: Remove 2 unnecessary type casts (#154)

Author: RunDevelopment

src/parser.ts

@@ -3,7 +3,6 @@ import type {
     Backreference,
     CapturingGroup,
     CharacterClass,
-    CharacterClassElement,
     CharacterClassRange,
     Flags,
     Group,
@@ -393,7 +392,7 @@ class RegExpParserState {
             throw new Error("UnknownError")
         }
 
-        ;(parent.elements as CharacterClassElement[]).push({
+        parent.elements.push({
             type: "CharacterSet",
             parent,
             start,

src/validator.ts

@@ -642,7 +642,7 @@ export class RegExpValidator {
      * @param options The options of validator.
      */
     public constructor(options?: RegExpValidator.Options) {
-        this._options = options ?? ({} as RegExpValidator.Options)
+        this._options = options ?? {}
     }
 
     /**