custom-app/dhcc-app-dll/node_modules/core-js/library/modules/_math-sign.js

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// 20.2.2.28 Math.sign(x)
module.exports = Math.sign || function sign(x) {
  // eslint-disable-next-line no-self-compare
  return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
};