create-expo-cljs-app
Version:
Create a react native application with Expo and Shadow-CLJS!
33 lines (23 loc) • 1.69 kB
JavaScript
exports.__esModule = true;
exports.default = useStable;
var React = _interopRequireWildcard(require("react"));
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*
*/
var UNINITIALIZED = typeof Symbol === 'function' && typeof Symbol() === 'symbol' ? Symbol() : Object.freeze({});
function useStable(getInitialValue) {
var ref = React.useRef(UNINITIALIZED);
if (ref.current === UNINITIALIZED) {
ref.current = getInitialValue();
} // $FlowFixMe (#64650789) Trouble refining types where `Symbol` is concerned.
return ref.current;
}
module.exports = exports.default;
;