text: //// [symbolObserverMismatchingPolyfillsWorkTogether.ts]
  interface SymbolConstructor {
      readonly observer: symbol;
  }
  interface SymbolConstructor {
      readonly observer: unique symbol;
  }
  
  const obj = {
      [Symbol.observer]: 0
  };
  
  //// [symbolObserverMismatchingPolyfillsWorkTogether.js]
  const obj = {
      [Symbol.observer]: 0
  };
  
  
  //// [symbolObserverMismatchingPolyfillsWorkTogether.d.ts]
  interface SymbolConstructor {
      readonly observer: symbol;
  }
  interface SymbolConstructor {
      readonly observer: unique symbol;
  }
  declare const obj: {
      [Symbol.observer]: number;
  };
  