only-changed-jest-watch-plugin/example/node_modules/core-js/modules/_a-number-value.js

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

var cof = require('./_cof');
module.exports = function (it, msg) {
  if (typeof it != 'number' && cof(it) != 'Number') throw TypeError(msg);
  return +it;
};