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@kernelift/utils

v1.0.7

Published

kernelift 前端工具方法库

Readme

@kernelift/utils

Kernelift 前端工具方法库,提供加密解密、颜色处理、跨标签页通信等实用功能。

安装

pnpm add @kernelift/utils

包已标记 sideEffects: false,根入口的命名导出可参与摇树优化。加密相关能力仍建议通过 @kernelift/utils/crypto 单独导入,避免默认入口带入可选加密依赖。

功能模块

1. AES-GCM 加密

提供 AES-GCM(高级加密标准-伽罗瓦/计数器模式)加密解密功能。

使用示例

import { AesGcmUtils, AesGcmEncryption } from '@kernelift/utils/crypto';

// 创建加密实例
const aes = new AesGcmEncryption(256, 12, 128);

// 生成密钥
const key = aes.generateKey();

// 加密数据
const result = aes.encrypt('Hello World', key);
console.log(result.ciphertext); // 加密后的密文
console.log(result.iv);         // 初始化向量
console.log(result.tag);        // 认证标签

// 解密数据
const decrypted = aes.decrypt(result.ciphertext, key, result.iv, result.tag);
console.log(decrypted); // "Hello World"

// 快速加密(自动生成IV)
const quickResult = aes.quickEncrypt('Quick encrypt', key);

主要方法

| 方法 | 说明 | |------|------| | generateKey() | 生成随机密钥 | | generateKeyFromPassword(password, salt?, iterations?) | 从密码生成密钥(PBKDF2) | | generateIv() | 生成随机IV | | encrypt(plaintext, key, iv?, additionalData?) | 加密数据 | | decrypt(ciphertext, key, iv, tag, additionalData?) | 解密数据 | | verifyIntegrity(ciphertext, key, iv, tag, additionalData?) | 验证数据完整性 | | quickEncrypt(plaintext, key) | 快速加密(自动生成IV) |


2. RSA-OAEP 加密

提供 RSA-OAEP(最优非对称加密填充)加密解密功能。

使用示例

import { RSAUtils } from '@kernelift/utils/crypto';

// 生成密钥对
const keyPair = RSAUtils.generateKeyPair();
console.log(keyPair.publicKeyPem);
console.log(keyPair.privateKeyPem);

// 加密
const publicKey = RSAUtils.pemToPublicKey(keyPair.publicKeyPem);
const encrypted = RSAUtils.encrypt('Secret message', publicKey);

// 解密
const privateKey = RSAUtils.pemToPrivateKey(keyPair.privateKeyPem);
const decrypted = RSAUtils.decrypt(encrypted, privateKey);
console.log(decrypted); // "Secret message"

主要方法

| 方法 | 说明 | |------|------| | generateKeyPair() | 生成 RSA 密钥对(2048位) | | pemToPublicKey(pem) | PEM 格式转公钥对象 | | pemToPrivateKey(pem) | PEM 格式转私钥对象 | | encrypt(text, publicKey) | RSA-OAEP 加密 | | decrypt(ciphertext, privateKey) | RSA-OAEP 解密 |


3. 颜色工具

提供颜色转换和主题色生成功能。

使用示例

import { hexToRgb, generateLightColors } from '@kernelift/utils';

// 十六进制转RGB
const rgb = hexToRgb('#409eff');
console.log(rgb); // { r: 64, g: 158, b: 255 }

// 生成主题色系(11个等级,类似Tailwind的50-950)
const colors = generateLightColors('#409eff');
console.log(colors);
// ["rgb(237,245,255)", "rgb(229,240,254)", ..., "rgb(64,158,255)", ..., "rgb(15,39,88)"]

主要方法

| 方法 | 说明 | |------|------| | hexToRgb(hex) | 十六进制颜色转RGB对象 | | generateLightColors(primaryColor, levels?, intensity?, targetIndex?) | 生成不同亮度的主题色系 |


4. 广播通道

提供跨标签页/窗口通信功能,基于 BroadcastChannel API。

使用示例

import {
  createBroadcastChannel,
  postBroadcastMessage,
  onBroadcastMessage,
  closeBroadcastChannel,
  BroadcastChannelWrapper
} from '@kernelift/utils';

// 方式1:使用函数式API
const channel = createBroadcastChannel('my-channel');

// 发送消息
postBroadcastMessage(channel, { type: 'message', data: 'Hello' });

// 监听消息
onBroadcastMessage(channel, (data) => {
  console.log('收到消息:', data);
});

// 关闭频道
closeBroadcastChannel(channel);

// 方式2:使用封装类
const wrapper = new BroadcastChannelWrapper<{ type: string; data: string }>('my-channel');
wrapper.postMessage({ type: 'message', data: 'Hello' });
wrapper.onMessage((data) => console.log('收到消息:', data));
wrapper.close();

主要方法

| 方法 | 说明 | |------|------| | createBroadcastChannel(channelName) | 创建广播频道 | | postBroadcastMessage(channel, message) | 发送消息 | | onBroadcastMessage(channel, callback) | 监听消息 | | closeBroadcastChannel(channel) | 关闭频道 | | BroadcastChannelWrapper | 广播频道封装类 |


5. 安全执行器

提供安全的 JavaScript 代码执行环境,限制可用的全局对象。

使用示例

import { SafeEvaluator } from '@kernelift/utils';

const evaluator = new SafeEvaluator({
  console,
  Math,
  Date
});

// 安全执行代码
const result = evaluator.evaluate('Math.max(1, 2, 3)', {});
console.log(result); // 3

// 使用上下文变量
const contextResult = evaluator.evaluate('a + b * 2', { a: 10, b: 5 });
console.log(contextResult); // 20

主要方法

| 方法 | 说明 | |------|------| | evaluate(code, context?) | 安全执行 JavaScript 代码 |


6. 数据工具

提供常用的数据处理工具函数。

使用示例

import {
  uniqueArray,
  cloneDeep,
  merge,
  omit,
  formatCurrency
} from '@kernelift/utils';

// 数组去重
const arr = [1, 2, 2, 3, 3, 4];
const unique = uniqueArray(arr);
console.log(unique); // [1, 2, 3, 4]

// 深拷贝
const obj = { a: 1, b: { c: 2 } };
const cloned = cloneDeep(obj);
cloned.b.c = 3;
console.log(obj.b.c); // 2

// 深度合并
const merged = merge(
  { dialog: { modal: true } },
  { dialog: { draggable: false } }
);
console.log(merged); // { dialog: { modal: true, draggable: false } }

// 移除字段
const safeConfig = omit(
  {
    routes: [],
    defaultViews: {},
    homeMetaOverrides: { keepAlive: true }
  },
  ['routes', 'defaultViews']
);
console.log(safeConfig); // { homeMetaOverrides: { keepAlive: true } }

// 格式化货币
const formatted = formatCurrency(1234.56);
console.log(formatted); // "¥1,234.56"

主要方法

| 方法 | 说明 | |------|------| | uniqueArray(arr) | 数组去重 | | cloneDeep(obj) | 深拷贝对象 | | deepClone(obj) | cloneDeep 的兼容别名 | | merge(target, ...sources) | 深度合并对象 | | omit(obj, keys) | 返回移除指定字段后的新对象 | | formatCurrency(amount, locale?, currency?) | 格式化货币 |


依赖

  • node-forge: ^1.3.1 - 加密解密功能支持

许可证

GPL-3.0-only

作者

Charles Chan [email protected]