jsinspect-plus/spec/fixtures/indentation.js

Detect copy-pasted and structurally similar code. Supports ES2020 standard (and most proposed features), TS and TSX files. Using Babel 8's parser.

function intersectionA(array1, array2) {
  array1.filter(function(n) {
    return array2.indexOf(n) != -1;
  });
}

  function intersectionA(array1, array2) {
    array1.filter(function(n) {
      return array2.indexOf(n) == -1;
    });
  }