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bt-storage

v0.1.0

Published

<h1 align="center">Welcome to better-storage 👋</h1> <p> <a href="https://www.npmjs.com/package/bt-storage" target="_blank"> <img alt="Version" src="https://img.shields.io/npm/v/bt-storage.svg"> </a> <a href="#" target="_blank"> <img alt="Li

Downloads

3

Readme

安装

npm install bt-storage

示例

import BetterStorage from "bt-storage";

const stg = new BetterStorage({
  storage: localStorage,         // localStorage or sessionStorage
  prefix: 'BIU',
  expires: 0,
  secret: false,
  AES: {
    secret: '30D17839695CB24C',    // AES secret key
    iv: '8BCAB84D2148034C'         // AES IV
  },
})

stg.set('test', 'some value', {
  expires: 1000, // 1秒后过期
  secret: true,  // 加密存储
})

参数说明

instanceConfig:

| 属性 | 说明 | 类型 | 是否必填 | 默认值 | | -------- | ----- | ---- | ---- | ---- | | storage | storage类型,为localStorage或sessionStorage | Storage | 是 | -- | | prefix | 存储的key的前缀| string | 是 | -- | | expires | 存储持续时间,为0则不过期 | number | 否 | 0 | | secret | 存储时是否加密 | boolean | 否 | false | | AES.secret | 加密存储时的AES secret key,为8n位的16进制字符 | string | 否 | 30D17839695CB24C | | AES.iv | 加密存储时的AES IV,为8n位的16进制字符 | string | 否 | 8BCAB84D2148034C |

setConfig:

| 属性 | 说明 | 类型 | 是否必填 | 默认值 | | -------- | ----- | ---- | ---- | ---- | | expires | 存储持续时间,为0则不过期 | number | 否 | 取自instance config | | secret | 存储时是否加密 | boolean | 否 | 取自instance config |

storageValue:

| 属性 | 说明 | 类型 | | -------- | ----- | ---- | | expires | 过期的时间戳 | number | | secret | 是否被加密 | boolean | | value | 被存储的数据 | any | | signature | 签名,用于读取时校验数据是否被更改 | string |

API

创建实例

constructor(options: instanceConfig): storageInstance

const stg = new BetterStorage({
  storage: localStorage,
  prefix: 'BIU',
  expires: 0,
  secret: false,
  AES: {
    secret: '01234567',
    iv: '0123456789abcdef'
  },
})

set(key: string, value: any, config: setConfig): void

向storage中存数据

stg.set('hello', 'world')

/* 存储结果
'@BIU/hello'
{
  "secret":false,
  "value":"world",
  "expires":0,
  "signature":"8E162389DE1AB8B27CB8D41C17AC94AD08721FC7"
}
*/

stg.set('hello', 'world', {
  secret: true,
  expires: 2000,
})

/* 存储结果
'@BIU/hello'
{
  "secret":true,
  "value":"e1FcAN/aPkJR/dCAWIl10Q==",
  "expires":1573025822648,
  "signature":"1A867EFC666516B7B0E7CC4552EFA969106A907F"
}
*/

get(key: string): any

从storage中取数据,未取到时返回null

const result = stg.get('hello') // "world"

remove(key: string): void

从storage中移除相应数据

stg.remove('hello')

stg.get('hello') // null

clear(): void

移除所有由该实例存入的数据

localStorage.setItem('hi', 'hi from origin');
stg.set('hi', 'hi from stg');
stg.set('hello', 'hello from stg');

localStorage.getItem('hi') // "hi from origin"
stg.get('hi') // "hi from stg"
stg.get('hello') // "hello from stg"

stg.clear();
localStorage.getItem('hi') // "hi from origin"
stg.get('hi') // null
stg.get('hello') // null

readable(): void

允许调用Api get

unreadable(): void

禁止调用Api get

stg.get('hello') // "world"

stg.unreadable()
stg.get('hello') // Error: this storage is unreadable for now!

keys: string[]

stg.set('a', 1)
stg.set('b', 1)
stg.set('c', 1)

console.log(stg.keys) // ["a", "b", "c"]

length: number

stg.set('a', 1)
stg.set('b', 1)
stg.set('c', 1)

console.log(stg.length) // 3

Author

👤 render