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exceptionhandling

v1.0.0

Published

统一为所有的异步函数添加try-catch异常捕获,在class中使用体验更佳

Downloads

7

Readme

exceptionhandling 异常处理

English translation: README_en.md

描述

这是一个用于统一为所有的异步函数添加 try-catch 异常捕获,并在 class 中使用体验更佳的工具库。

安装

使用 npm 安装:

npm install exceptionhandling --save

使用

asyncTryCatch

使用 try-catch 包装一个异步函数,可以捕获异常并输出错误日志

/**
 * @param func 待包装的异步函数
 * @returns 新的异步函数,具有相同的参数和返回值类型,但会在发生异常时返回 undefined
 */
export function asyncTryCatch<T = any>(
    func: (...args: any[]) => Promise<T>
): (...args: any[]) => Promise<T | undefined>

classAsyncTryCatch

在类中使用 try-catch 包装所有的异步方法,可以捕获异常并输出错误日志

/**
 * @param target 待包装的类
 * @returns 新的类,具有相同的参数和返回值类型,但会在发生异常时返回 undefined
 */
export function classAsyncTryCatch<T extends new(...args: any[]) => object>(target: T): T

代码示例

import { asyncTryCatch, classAsyncTryCatch } from "exceptionhandling";

// 异步函数
async function testAsyncFunction() {
	throw new Error("test error");
}

// 异步函数包装
const wrappedFunction = asyncTryCatch(testAsyncFunction);
await wrappedFunction(); // 发生异常,返回 undefined 并输出错误日志

// 类方法
@classAsyncTryCatch
class TestClass {
	async testMethod() {
		throw new Error("test error");
	}
}
const testClass = new TestClass();
await testClass.testMethod(); // 发生异常,返回 undefined 并输出错误日志

注意事项

使用"@"装饰器时,需要在 tsconfig.json 的 compilerOptions 中配置"experimentalDecorators": true