test.js

const matrixRatingColums = [
  { value: 1, text: '1' },
  { value: 2, text: '2' },
  { value: 3, text: '3' },
  { value: 4, text: '4' },
  { value: 5, text: '5' },
  { value: 6, text: '6' }
];
// ....
{ type: 'matrix', name: 'matrix',
  title: 'title 1',
  isRequired: true,
  isAllRowRequired: true,
  columns: matrixRatingColums,
  rows: [
    { value: 'a', text: 'A answer' },
    { value: 'b', text: 'B answer' },
    { value: 'c', text: 'C answer' },
    { value: 'd', text: 'D answer' },
    { value: 'e', text: 'E answer' },
    { value: 'f', text: 'F answer'  }
  ]
}