add flatmap support

song940 · Nov 13, 2023 · b2fdf66 · b2fdf66
1 parent ee73604
commit b2fdf66
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/packet.js b/packet.js
@@ -19,6 +19,14 @@ const fromIPv6 = (address) => {
  if (digits[digits.length - 1] === '') {
  digits.pop();
  }
+ // node js 10 does not support Array.prototype.flatMap
+ if (!Array.prototype.flatMap) {
+ // eslint-disable-next-line no-extend-native
+ Array.prototype.flatMap = function(f, ctx) {
+ return this.reduce((r, x, i, a) => r.concat(f.call(ctx, x, i, a)), []);
+ };
+ }
+
  // CAVEAT we have to take into account
  // the extra space used by the empty string
  const missingFields = 8 - digits.length + 1;