@aws-amplify/cache
Version:
Cache category of aws-amplify
86 lines • 2.25 kB
JavaScript
;
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
Object.defineProperty(exports, "__esModule", { value: true });
var core_1 = require("@aws-amplify/core");
/**
* Default cache config
*/
exports.defaultConfig = {
keyPrefix: 'aws-amplify-cache',
capacityInBytes: 1048576,
itemMaxSize: 210000,
defaultTTL: 259200000,
defaultPriority: 5,
warningThreshold: 0.8,
// the storage helper will check if localStorage exists,
// if not, will use a in-memory object instead
storage: new core_1.StorageHelper().getStorage(),
};
/**
* return the byte size of the string
* @param str
*/
function getByteLength(str) {
var ret = 0;
ret = str.length;
for (var i = str.length; i >= 0; i -= 1) {
var charCode = str.charCodeAt(i);
if (charCode > 0x7f && charCode <= 0x7ff) {
ret += 1;
}
else if (charCode > 0x7ff && charCode <= 0xffff) {
ret += 2;
}
// trail surrogate
if (charCode >= 0xdc00 && charCode <= 0xdfff) {
i -= 1;
}
}
return ret;
}
exports.getByteLength = getByteLength;
/**
* get current time
*/
function getCurrTime() {
var currTime = new Date();
return currTime.getTime();
}
exports.getCurrTime = getCurrTime;
/**
* check if passed value is an integer
*/
function isInteger(value) {
if (Number.isInteger) {
return Number.isInteger(value);
}
return _isInteger(value);
}
exports.isInteger = isInteger;
function _isInteger(value) {
return (typeof value === 'number' && isFinite(value) && Math.floor(value) === value);
}
/**
* provide an object as the in-memory cache
*/
var store = {};
var CacheObject = /** @class */ (function () {
function CacheObject() {
}
CacheObject.clear = function () {
store = {};
};
CacheObject.getItem = function (key) {
return store[key] || null;
};
CacheObject.setItem = function (key, value) {
store[key] = value;
};
CacheObject.removeItem = function (key) {
delete store[key];
};
return CacheObject;
}());
exports.CacheObject = CacheObject;
//# sourceMappingURL=CacheUtils.js.map