How to use the react-i18next.getDefaults function in react-i18next

it("errors if passed an argument", () => {
      // $ExpectError - no arguments should be passed to getDefaults
      getDefaults("string");
    });
  });

reactI18nextModule.init(i18n);
reactI18nextModule.type;
// $ExpectError - no field property on reactI18nextModule
reactI18nextModule.field;

// passing
setDefaults({ wait: true });
// $ExpectError - setDefaults must be called with an object
setDefaults("option");
// $ExpectError - other is not a valid option
setDefaults({ other: true });

// passing
getDefaults();
// $ExpectError - no arguments should be passed to getDefaults
getDefaults("string");

// passing
getI18n();
// $ExpectError - no arguments should be passed to getI18n
getI18n("string");

// passing
setI18n(i18n);
// $ExpectError - setI18n must be called with an object
setI18n("option");

defaultOptions.translateFuncName;
defaultOptions.nsMode;
// $ExpectError - no field property on defaultOptions
defaultOptions.field;

// passing
setDefaults({ wait: true });
// $ExpectError - setDefaults must be called with an object
setDefaults("option");
// $ExpectError - other is not a valid option
setDefaults({ other: true });

// passing
getDefaults();
// $ExpectError - no arguments should be passed to getDefaults
getDefaults("string");

// passing
getI18n();
// $ExpectError - no arguments should be passed to getI18n
getI18n("string");

// passing
setI18n(i18n);
// $ExpectError - setI18n must be called with an object
setI18n("option");

it("passes when called without an argument", () => {
      const options: TranslateOptions = getDefaults();
    });