fix(scale): handle Number.MAX_VALUE in linear scale without overflow by jonathan-fulton · Pull Request #12185

fix(scale): handle Number.MAX_VALUE in linear scale without overflow by jonathan-fulton · Pull Request #12185 · chartjs/Chart.js

Summary

Fixes #12184

When a dataset contains Number.MAX_VALUE, the linear scale's tick generation algorithm would overflow when computing "nice" tick values, causing the chart to crash or render incorrectly.

Changes

Added SAFE_MAX and SAFE_MIN constants (set to Number.MAX_VALUE / 2) to prevent overflow during calculations
Clamp the data range to safe values before computing nice tick bounds
Ensure niceMin and niceMax stay within safe bounds after rounding

Testing

Added test cases for both Number.MAX_VALUE and -Number.MAX_VALUE in datasets to ensure the chart renders without crashing and produces finite scale bounds.