bulma/docs/_react/bulma-customizer/src/App.jsx

import { useEffect, useState } from "react";
import "../../../../css/bulma.css";
import "./App.css";
import Slider from "./components/Slider";

const COLORS = ["primary", "link", "info", "success", "warning", "danger"];

const KEYS = [
  "scheme-h",
  "primary-h",
  "primary-s",
  "primary-l",
  "link-h",
  "link-s",
  "link-l",
  "info-h",
  "info-s",
  "info-l",
  "success-h",
  "success-s",
  "success-l",
  "warning-h",
  "warning-s",
  "warning-l",
  "danger-h",
  "danger-s",
  "danger-l",
  "skeleton-lines-gap",
];
const UNITS = ["deg", "rem", "em", "%"];
const SUFFIX_TO_KIND = {
  "-h": "hue",
  "-s": "saturation",
  "-l": "lightness",
  "-gap": "gap",
};

function App() {
  const [vars, setVars] = useState({});

  useEffect(() => {
    const rootStyle = window.getComputedStyle(document.documentElement);

    const cssvars = {};

    KEYS.map((key) => {
      const original = rootStyle.getPropertyValue(`--bulma-${key}`);
      const suffix = Object.keys(SUFFIX_TO_KIND).find((kind) =>
        key.endsWith(kind),
      );
      const unit = UNITS.find((unit) => original.endsWith(unit)) || "";
      const value = unit !== "" ? original.split(unit)[0] : original;

      cssvars[key] = {
        id: key,
        kind: SUFFIX_TO_KIND[suffix] || "any",
        original,
        unit,
        start: Number(value),
      };
    });

    setVars(cssvars);
  }, []);

  return (
    <section className="section">
      <div className="card">
        <div className="card-content">
          {COLORS.map((color) => {
            const h = `${color}-h`;

            if (!(h in vars)) {
              return;
            }

            const s = `${color}-s`;
            const l = `${color}-l`;

            return (
              <div key={color} className="block">
                <code>{color}</code>

                <Slider
                  id={h}
                  kind="hue"
                  color={color}
                  original={vars[h].original}
                  start={vars[h].start}
                  unit={vars[h].unit}
                />

                <Slider
                  id={s}
                  kind="saturation"
                  color={color}
                  original={vars[s].original}
                  start={vars[s].start}
                  unit={vars[s].unit}
                />

                <Slider
                  id={l}
                  kind="lightness"
                  color={color}
                  original={vars[l].original}
                  start={vars[l].start}
                  unit={vars[l].unit}
                />
              </div>
            );
          })}

          {/* {vars.map((v) => {
            const { id, kind, original, unit, start } = v;

            return (
              <div key={id} className="block">
                <code>{id}</code>
                <Slider
                  id={id}
                  kind={kind}
                  original={original}
                  start={start}
                  unit={unit}
                />
              </div>
            );
          })} */}

          <div className="buttons">
            <button className="button">Button</button>
            <button className="button is-primary">Primary</button>
            <button className="button is-link">Link</button>
            <button className="button is-info">Info</button>
            <button className="button is-success">Success</button>
            <button className="button is-warning">Warning</button>
            <button className="button is-danger">Danger</button>
          </div>
        </div>
      </div>
    </section>
  );
}

export default App;