message: Fix getPreviousSibling()
diff: import { NodePath } from "@babel/traverse";
  import * as t from "@babel/types";
  -import { last } from "../array-helpers";
  -
  export {
  getPreviousSibling,
  hasSiblingStatement,
  @@ -11,7 +9,7 @@ export {
  };
  function getPreviousSibling(path: NodePath): NodePath | undefined {
  - return last(path.getAllPrevSiblings());
  + return path.getAllPrevSiblings()[0];
  }
  function hasSiblingStatement(path: NodePath): boolean {
  