@aws-amplify/core
Version:
Core category of aws-amplify
112 lines • 4.04 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
/*
* Copyright 2017-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
* the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0/
*
* or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
*/
var react_native_1 = require("react-native");
var MEMORY_KEY_PREFIX = '@MemoryStorage:';
var dataMemory = {};
/** @class */
var MemoryStorage = /** @class */ (function () {
function MemoryStorage() {
}
/**
* This is used to set a specific item in storage
* @param {string} key - the key for the item
* @param {object} value - the value
* @returns {string} value that was set
*/
MemoryStorage.setItem = function (key, value) {
react_native_1.AsyncStorage.setItem(MEMORY_KEY_PREFIX + key, value);
dataMemory[key] = value;
return dataMemory[key];
};
/**
* This is used to get a specific key from storage
* @param {string} key - the key for the item
* This is used to clear the storage
* @returns {string} the data item
*/
MemoryStorage.getItem = function (key) {
return Object.prototype.hasOwnProperty.call(dataMemory, key)
? dataMemory[key]
: undefined;
};
/**
* This is used to remove an item from storage
* @param {string} key - the key being set
* @returns {string} value - value that was deleted
*/
MemoryStorage.removeItem = function (key) {
react_native_1.AsyncStorage.removeItem(MEMORY_KEY_PREFIX + key);
return delete dataMemory[key];
};
/**
* This is used to clear the storage
* @returns {string} nothing
*/
MemoryStorage.clear = function () {
dataMemory = {};
return dataMemory;
};
/**
* Will sync the MemoryStorage data from AsyncStorage to storageWindow MemoryStorage
* @returns {void}
*/
MemoryStorage.sync = function () {
if (!MemoryStorage.syncPromise) {
MemoryStorage.syncPromise = new Promise(function (res, rej) {
react_native_1.AsyncStorage.getAllKeys(function (errKeys, keys) {
if (errKeys)
rej(errKeys);
var memoryKeys = keys.filter(function (key) {
return key.startsWith(MEMORY_KEY_PREFIX);
});
react_native_1.AsyncStorage.multiGet(memoryKeys, function (err, stores) {
if (err)
rej(err);
stores.map(function (result, index, store) {
var key = store[index][0];
var value = store[index][1];
var memoryKey = key.replace(MEMORY_KEY_PREFIX, '');
dataMemory[memoryKey] = value;
});
res();
});
});
});
}
return MemoryStorage.syncPromise;
};
MemoryStorage.syncPromise = null;
return MemoryStorage;
}());
/** @class */
var StorageHelper = /** @class */ (function () {
/**
* This is used to get a storage object
* @returns {object} the storage
*/
function StorageHelper() {
this.storageWindow = MemoryStorage;
}
/**
* This is used to return the storage
* @returns {object} the storage
*/
StorageHelper.prototype.getStorage = function () {
return this.storageWindow;
};
return StorageHelper;
}());
exports.default = StorageHelper;
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