From 26708dc26d361b09763ebd53978597f136cb7277 Mon Sep 17 00:00:00 2001
From: Arjun Choudhary <contact@arjunchoudhary.com>
Date: Fri, 25 Nov 2022 16:02:28 +0530
Subject: [PATCH] fix: backported fp rounding fix

---
 src/js/utils/draw.js    | 4 +++-
 src/js/utils/helpers.js | 9 +++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/js/utils/draw.js b/src/js/utils/draw.js
index 5ef588d..7640eb0 100644
--- a/src/js/utils/draw.js
+++ b/src/js/utils/draw.js
@@ -4,7 +4,7 @@ import {
   shortenLargeNumber,
   getSplineCurvePointsStr,
 } from "./draw-utils";
-import { getStringWidth, isValidNumber } from "./helpers";
+import { getStringWidth, isValidNumber, round } from "./helpers";
 import { DOT_OVERLAY_SIZE_INCR } from "./constants";
 
 export const AXIS_TICK_LENGTH = 6;
@@ -485,6 +485,8 @@ export function yLine(y, label, width, options = {}) {
   x1 += options.offset;
   x2 += options.offset;
 
+  if (typeof label === "number") label = round(label);
+
   return makeHoriLine(y, label, x1, x2, {
     className: options.className,
     lineType: options.lineType,
diff --git a/src/js/utils/helpers.js b/src/js/utils/helpers.js
index 0ce5d71..6062ea3 100644
--- a/src/js/utils/helpers.js
+++ b/src/js/utils/helpers.js
@@ -141,3 +141,12 @@ export function deepClone(candidate) {
 
   return cloned;
 }
+/**
+ * Round a number to the closes precision, max max precision 4
+ * @param {Number} d Any Number
+ */
+export function round(d) {
+  // https://floating-point-gui.de/
+  // https://www.jacklmoore.com/notes/rounding-in-javascript/
+  return Number(Math.round(d + "e4") + "e-4");
+}