Type fix

tool/resources/org/antlr/v4/tool/templates/codegen/TypeScript/TypeScript.stg

@@ -133,14 +133,14 @@ export default class <parser.name> extends <superClass; null="Parser"> {
     public static override readonly EOF = Token.EOF;
     <parser.rules:{r | public static readonly RULE_<r.name> = <r.index>;}; separator="\n", wrap, anchor>
 
-    public static readonly literalNames = [
+    public static readonly literalNames: (string|null)[] = [
         <parser.literalNames:{t | <t>}; null="null", separator=", ", wrap, anchor>
     ];
 
-    public static readonly symbolicNames = [
+    public static readonly symbolicNames: (string|null)[] = [
         <parser.symbolicNames:{t | <t>}; null="null", separator=", ", wrap, anchor>
     ];
-    public static readonly ruleNames = [
+    public static readonly ruleNames: string[] = [
         <parser.ruleNames:{r | "<r>",}; separator=" ", wrap, anchor>
     ];
 
@@ -876,23 +876,23 @@ export default class <lexer.name> extends <superClass; null="Lexer"> {
     public static readonly EOF = Token.EOF;
     <rest(lexer.modes):{m | public static readonly <m> = <i>;}; separator="\n">
 
-    public static readonly channelNames = [
+    public static readonly channelNames: string[] = [
         "DEFAULT_TOKEN_CHANNEL", "HIDDEN"<if (lexer.channelNames)>, <lexer.channelNames:{c| "<c>"}; separator=", ", wrap, anchor><endif>
     ];
 
-    public static readonly literalNames = [
+    public static readonly literalNames: (string | null)[] = [
         <lexer.literalNames:{t | <t>}; null="null", separator=", ", wrap, anchor>
     ];
 
-    public static readonly symbolicNames = [
+    public static readonly symbolicNames: (string | null)[] = [
         <lexer.symbolicNames:{t | <t>}; null="null", separator=", ", wrap, anchor>
     ];
 
-    public static readonly modeNames = [
+    public static readonly modeNames: string[] = [
         <lexer.modes:{m| "<m>",}; separator=" ", wrap, anchor>
     ];
 
-    public static readonly ruleNames = [
+    public static readonly ruleNames: string[] = [
         <lexer.ruleNames:{r | "<r>",}; separator=" ", wrap, anchor>
     ];