How to use the elasticsearch.errors.BadRequest function in elasticsearch

it('makes es.BadRequest a SavedObjectsClient/BadRequest error', () => {
    const error = new esErrors.BadRequest();
    expect(isBadRequestError(error)).to.be(false);
    expect(decorateEsError(error)).to.be(error);
    expect(isBadRequestError(error)).to.be(true);
  });

it('should transform elasticsearch errors into boom errors with the same status code', function () {
    var conflict = handleESError(new esErrors.Conflict());
    expect(conflict.isBoom).to.be(true);
    expect(conflict.output.statusCode).to.be(409);

    var forbidden = handleESError(new esErrors[403]);
    expect(forbidden.isBoom).to.be(true);
    expect(forbidden.output.statusCode).to.be(403);

    var notFound = handleESError(new esErrors.NotFound());
    expect(notFound.isBoom).to.be(true);
    expect(notFound.output.statusCode).to.be(404);

    var badRequest = handleESError(new esErrors.BadRequest());
    expect(badRequest.isBoom).to.be(true);
    expect(badRequest.output.statusCode).to.be(400);
  });

it('should transform elasticsearch errors into boom errors with the same status code', function () {
    const conflict = handleESError(new esErrors.Conflict());
    expect(conflict.isBoom).to.be(true);
    expect(conflict.output.statusCode).to.be(409);

    const forbidden = handleESError(new esErrors[403]);
    expect(forbidden.isBoom).to.be(true);
    expect(forbidden.output.statusCode).to.be(403);

    const notFound = handleESError(new esErrors.NotFound());
    expect(notFound.isBoom).to.be(true);
    expect(notFound.output.statusCode).to.be(404);

    const badRequest = handleESError(new esErrors.BadRequest());
    expect(badRequest.isBoom).to.be(true);
    expect(badRequest.output.statusCode).to.be(400);
  });

it('should transform elasticsearch errors into boom errors with the same status code', function () {
    const conflict = handleESError(new esErrors.Conflict());
    expect(conflict.isBoom).to.be(true);
    expect(conflict.output.statusCode).to.be(409);

    const forbidden = handleESError(new esErrors[403]);
    expect(forbidden.isBoom).to.be(true);
    expect(forbidden.output.statusCode).to.be(403);

    const notFound = handleESError(new esErrors.NotFound());
    expect(notFound.isBoom).to.be(true);
    expect(notFound.output.statusCode).to.be(404);

    const badRequest = handleESError(new esErrors.BadRequest());
    expect(badRequest.isBoom).to.be(true);
    expect(badRequest.output.statusCode).to.be(400);
  });