only-changed-jest-watch-plugin/example/node_modules/core-js/modules/_replacer.js

Jest watch plugin for running either only the modified test (for TDD), or tests of dependant modules

module.exports = function (regExp, replace) {
  var replacer = replace === Object(replace) ? function (part) {
    return replace[part];
  } : replace;
  return function (it) {
    return String(it).replace(regExp, replacer);
  };
};