hunk.code_window:       [9, 9],
         [10, undefined],
       ]);
     });
     it('push inserts at highest index', () => {
       const v0 = List.of('a', 'b', 'c');
       const v1 = v0.push('d', 'e', 'f');
  
hunk.labels: keep keep keep keep add keep keep keep
hunk.after_edit:   it('has the same iterator function for values', () => {
       const l = List(['a', 'b', 'c']);
       expect(l[Symbol.iterator]).toBe(l.values);
     });
  
hunk.file_path: __tests__/List.ts
hunk.type: add
file: github: [Methuselah96]
  