Function toggleField

ts/DiffOptions.tsx:63–65

(k: BooleanOptions)

    setIsVisible(!isVisible);
  };
  const toggleField = (k: BooleanOptions) => () => {
    updateOptions(options => ({[k]: !options[k]}));
  };
  const setUnifiedContext: React.ChangeEventHandler<HTMLInputElement> = e => {
    updateOptions({unified: e.currentTarget.valueAsNumber});
  };