feat: add new file

frontend/node_modules/d3-shape/src/order/appearance.js

@@ -0,0 +1,12 @@
+import none from "./none.js";
+
+export default function(series) {
+  var peaks = series.map(peak);
+  return none(series).sort(function(a, b) { return peaks[a] - peaks[b]; });
+}
+
+function peak(series) {
+  var i = -1, j = 0, n = series.length, vi, vj = -Infinity;
+  while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i;
+  return j;
+}