Support super method calls on custom abilities and modifiers

Author: ark120202

game/scripts/vscripts/lib/dota_ts_adapter.ts

@@ -26,6 +26,11 @@ export class BaseModifierMotionVertical extends BaseModifier {}
 export interface BaseModifierMotionBoth extends CDOTA_Modifier_Lua_Motion_Both {}
 export class BaseModifierMotionBoth extends BaseModifier {}
 
+// Add standard base classes to prototype chain to make `super.*` work as `self.BaseClass.*`
+setmetatable(BaseAbility.prototype, { __index: CDOTA_Ability_Lua ?? C_DOTA_Ability_Lua });
+setmetatable(BaseItem.prototype, { __index: CDOTA_Item_Lua ?? C_DOTA_Item_Lua });
+setmetatable(BaseModifier.prototype, { __index: CDOTA_Modifier_Lua ?? C_DOTA_Modifier_Lua });
+
 export const registerAbility = (name?: string) => (ability: new () => CDOTA_Ability_Lua | CDOTA_Item_Lua) => {
     if (name !== undefined) {
         // @ts-ignore