rc-theme-switcher/dist/ThemeProvider.js

A simple Theme/Style Manager for React that allows switching between **light**, **dark**, and **custom themes**, supports **system preference**. Perfect for React projects of any size. It uses React Context API + localStorage to persist theme across sess

"use strict";

function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useTheme = exports.ThemeProvider = void 0;
var _react = _interopRequireWildcard(require("react"));
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function _interopRequireWildcard(e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, "default": e }; if (null === e || "object" != _typeof(e) && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (var _t in e) "default" !== _t && {}.hasOwnProperty.call(e, _t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, _t)) && (i.get || i.set) ? o(f, _t, i) : f[_t] = e[_t]); return f; })(e, t); }
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
var ThemeContext = /*#__PURE__*/(0, _react.createContext)();
var ThemeProvider = exports.ThemeProvider = function ThemeProvider(_ref) {
  var children = _ref.children,
    defaultTheme = _ref.defaultTheme;
  var _useState = (0, _react.useState)(defaultTheme || "light"),
    _useState2 = _slicedToArray(_useState, 2),
    theme = _useState2[0],
    setTheme = _useState2[1];
  (0, _react.useEffect)(function () {
    var savedTheme = localStorage.getItem("theme");
    if (savedTheme) {
      setTheme(savedTheme);
    } else {
      var prefersDark = window.matchMedia("(prefers-color-scheme: dark)").matches;
      setTheme(prefersDark ? "dark" : "light");
    }
  }, []);
  (0, _react.useEffect)(function () {
    document.body.setAttribute("data-theme", theme);
    localStorage.setItem("theme", theme);
  }, [theme]);
  var toggleTheme = function toggleTheme() {
    return setTheme(function (prev) {
      return prev === "light" ? "dark" : "light";
    });
  };
  var setCustomTheme = function setCustomTheme(name) {
    return setTheme(name);
  };
  return /*#__PURE__*/_react["default"].createElement(ThemeContext.Provider, {
    value: {
      theme: theme,
      toggleTheme: toggleTheme,
      setCustomTheme: setCustomTheme
    }
  }, children);
};
var useTheme = exports.useTheme = function useTheme() {
  return (0, _react.useContext)(ThemeContext);
};