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try-wrapper

输入Javascript脚本字符串,然后利用try catch将其包裹起来,基于构建的前端错误捕获工具。

Example 1

var wrapper = require('try-wrapper');

console.log(
    wrapper('function test() { console.log("hello world"); }')
);

结果:

function test() {
    try {
        console.log('hello world');
    } catch (e) {
        console.error(e);
    }
}

Example 2

var wrapper = require('try-wrapper');

console.log(
    wrapper('function test() { console.log("hello world"); }', { caller: 'onthrow(e);' })
);

结果:

function test() {
    try {
        console.log('hello world');
    } catch (e) {
        onthrow(e);
    }
}

Advanced Example

仅对特定函数进行包裹。

var wrapper = require('try-wrapper');

function _nameFilter() {
    // 表示仅对setTimeout, setInterval, jQuery.ajax, 
    // $.ajax, require, define中的函数进行包裹
    var matchs = {
        'setTimeout': true,
        'setInterval': true,
        'jQuery.ajax': true,
        '$.ajax': true,
        'require': true,
        'define': true
    }
    return matchs[name];
}

console.log(
    wrapper(/* 你的源代码 */, {
        nameFilter: _nameFilter
    })
);

下面是源代码和输出的对照:

  • setTimeout

源代码

setTimeout(function () {
    console.log('hello world!');
}, 1000);

输出

setTimeout(function () {
    try {
        console.log('hello world!');
    } catch (e) {
        console.error(e);
    }
}, 1000);
  • $.ajax

源代码

$.ajax({
    type: 'POST',
    complete: function () {
        console.log('done');
    },
    error: function () {
        console.log('error');
    }
})

输出

$.ajax({
    type: 'POST',
    complete: function () {
        try {
            console.log('done');
        } catch (e) {
            console.error(e);
        }
    },
    error: function () {
        try {
            console.log('error');
        } catch (e) {
            console.error(e);
        }
    }
});
  • 不需要包裹的函数

源代码

unnecssary('test', function () {
    console.log('unnecssary');
});

输出

unnecssary('test', function () {
    console.log('unnecssary');
});

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通过构建用try-catch将函数包裹起来

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