@react-navigation/core/lib/commonjs/useRegisterNavigator.js

Core utilities for building navigators

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useRegisterNavigator = useRegisterNavigator;
var _nonSecure = require("nanoid/non-secure");
var React = _interopRequireWildcard(require("react"));
var _EnsureSingleNavigator = require("./EnsureSingleNavigator.js");
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
/**
 * Register a navigator in the parent context (either a navigation container or a screen).
 * This is used to prevent multiple navigators under a single container or screen.
 */
function useRegisterNavigator() {
  const [key] = React.useState(() => (0, _nonSecure.nanoid)());
  const container = React.useContext(_EnsureSingleNavigator.SingleNavigatorContext);
  if (container === undefined) {
    throw new Error("Couldn't register the navigator. Have you wrapped your app with 'NavigationContainer'?\n\nThis can also happen if there are multiple copies of '@react-navigation' packages installed.");
  }
  React.useEffect(() => {
    const {
      register,
      unregister
    } = container;
    register(key);
    return () => unregister(key);
  }, [container, key]);
  return key;
}
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