mirror of
https://github.com/status-im/react-native.git
synced 2025-02-22 14:18:23 +00:00
807726bcb4
Summary: This is the first step to clarify and simplify the type definations about navigation state. For now, `NavigationParentState` is actually used as the real navigation state and `NavigationState` is used as a route in navigation, which has been confusion among the APIs. To be clear, our APIs has no intention and interest in dealing with nested or hierarchical navigation states, and we should avoid have the name like `ParentState` or `children`. To fully migrate the types, theer will be a lot of code changes and this is just the first step to rename. = What's Next? 1. rename `navigationState.children` to `navigationState.routes` (breaking change!) 2. remove `navigationState.key` from its type defination. Reviewed By: ericvicenti Differential Revision: D3321403 fbshipit-source-id: 3e39b60f736c1135bc85d8bf2b89027d665e28d4
42 lines
1.1 KiB
JavaScript
42 lines
1.1 KiB
JavaScript
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
* @providesModule NavigationFindReducer
|
|
* @flow
|
|
*/
|
|
'use strict';
|
|
|
|
/*
|
|
* NavigationFindReducer takes an array of reducers, and returns a reducer that
|
|
* iterates through all of the reducers and the result of the first reducer
|
|
* that modifies the input
|
|
*/
|
|
|
|
import type {
|
|
NavigationRoute,
|
|
NavigationReducer
|
|
} from 'NavigationTypeDefinition';
|
|
|
|
function NavigationFindReducer(
|
|
reducers: Array<NavigationReducer>,
|
|
defaultState: NavigationRoute,
|
|
): NavigationReducer {
|
|
return function(lastState: ?NavigationRoute, action: ?any): NavigationRoute {
|
|
for (let i = 0; i < reducers.length; i++) {
|
|
let reducer = reducers[i];
|
|
let newState = reducer(lastState, action);
|
|
if (newState !== lastState) {
|
|
return newState || defaultState;
|
|
}
|
|
}
|
|
return lastState || defaultState;
|
|
};
|
|
}
|
|
|
|
module.exports = NavigationFindReducer;
|