math-sign.js 299 B

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  1. // `Math.sign` method implementation
  2. // https://tc39.es/ecma262/#sec-math.sign
  3. // eslint-disable-next-line es-x/no-math-sign -- safe
  4. module.exports = Math.sign || function sign(x) {
  5. // eslint-disable-next-line no-self-compare -- NaN check
  6. return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
  7. };