refactor(es modules): migrate numberUtils

src/utils/numberUtils.ts

@@ -0,0 +1,21 @@
+// round value to d decimals
+export function rn(value: number, decimals: number = 0) {
+  const multiplier = Math.pow(10, decimals);
+  return Math.round(value * multiplier) / multiplier;
+}
+
+export function minmax(value: number, min: number, max: number) {
+  return Math.min(Math.max(value, min), max);
+}
+
+// return value clamped to [0, 100]
+export function lim(value: number) {
+  return minmax(value, 0, 100);
+}
+
+// normalization function
+export function normalize(val: number, min: number, max: number) {
+  return minmax((val - min) / (max - min), 0, 1);
+}
+
+// import {rn, minmax, lim, normalize} from '/src/utils/numberUtils';