extend-external-module-type.d.ts

/**
 * How to extend/augment the types for a 3rd-party TypeScript module. For example, if its DefinitelyTyped typings are incomplete.
 * (In most cases it's better to submit a pull request to DefinitelyTyped with the corrected types!)
 */

declare module 'quill' {
  const OrigQuill: typeof import('../../../node_modules/@types/quill').Quill;
  class Quill extends OrigQuill {
    // In this case, we're extending the type for the Quill class if it's using the "Bubble" theme
    public theme?: {
      options?: any;
      tooltip?: {
        root: HTMLDivElement;
        hide: () => void;
        show: () => void;
        position: (reference) => void;
      };
    };
  }
  export default Quill;
}