storybook-dark-mode/dist/cjs/index.js

Toggle between light and dark mode in Storybook

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
var _exportNames = {
  useDarkMode: true
};
exports.useDarkMode = useDarkMode;
var _previewApi = require("@storybook/preview-api");
var _constants = require("./constants");
Object.keys(_constants).forEach(function (key) {
  if (key === "default" || key === "__esModule") return;
  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
  if (key in exports && exports[key] === _constants[key]) return;
  Object.defineProperty(exports, key, {
    enumerable: true,
    get: function get() {
      return _constants[key];
    }
  });
});
var _Tool = require("./Tool");
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _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(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"]; if (null != _i) { var _s, _e, _x, _r, _arr = [], _n = !0, _d = !1; try { if (_x = (_i = _i.call(arr)).next, 0 === i) { if (Object(_i) !== _i) return; _n = !1; } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0) { ; } } catch (err) { _d = !0, _e = err; } finally { try { if (!_n && null != _i["return"] && (_r = _i["return"](), Object(_r) !== _r)) return; } finally { if (_d) throw _e; } } return _arr; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
/**
 * Returns the current state of storybook's dark-mode
 */
function useDarkMode() {
  var _useState = (0, _previewApi.useState)((0, _Tool.store)().current === 'dark'),
    _useState2 = _slicedToArray(_useState, 2),
    isDark = _useState2[0],
    setIsDark = _useState2[1];
  (0, _previewApi.useEffect)(function () {
    var chan = _previewApi.addons.getChannel();
    chan.on(_constants.DARK_MODE_EVENT_NAME, setIsDark);
    return function () {
      return chan.off(_constants.DARK_MODE_EVENT_NAME, setIsDark);
    };
  }, []);
  return isDark;
}