@base-ui-components/react/esm/slider/utils/roundValueToStep.js

Base UI is a library of headless ('unstyled') React components and low-level hooks. You gain complete control over your app's CSS and accessibility features.

function getDecimalPrecision(num) {
  // This handles the case when num is very small (0.00000001), js will turn this into 1e-8.
  // When num is bigger than 1 or less than -1 it won't get converted to this notation so it's fine.
  if (Math.abs(num) < 1) {
    const parts = num.toExponential().split('e-');
    const matissaDecimalPart = parts[0].split('.')[1];
    return (matissaDecimalPart ? matissaDecimalPart.length : 0) + parseInt(parts[1], 10);
  }
  const decimalPart = num.toString().split('.')[1];
  return decimalPart ? decimalPart.length : 0;
}
export function roundValueToStep(value, step, min) {
  const nearest = Math.round((value - min) / step) * step + min;
  return Number(nearest.toFixed(getDecimalPrecision(step)));
}