tc

try.catch

Simple performant try-catch wrapper

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1

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5yrs ago

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0

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0.4KB

License

MIT

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try.catch Build Status

Simple performant try-catch wrapper.

This utility is used in place of regular try/catch blocks using a clean functional syntax. Execution is fully synchronous; this does not work with async methods

Instead of this


try {
    // do something
}
catch (err) {
    // handle errors
}
finally {
    // finally do something
}

Do this


var Try = require('try.catch');

Try(function () {
    // do something
})
.catch(function (err) {
    // handle errors
})
.finally(function () {
    // finally do something
});

It can also be used like this:


function doSomething (x, y) {
    return this + x * y;
}

var result = Try(doSomething, 'test', 2, 3)     // pass context and arguments to function
.catch(function (err) {
    // err was thrown
})                                              // chain catch blocks
.catch(TypeError, function (err) {              // catch errors conditionally
    // TypeError was thrown
})
.finally(function (value, err) {
    // finally do something
});

console.log(result.value); // return value of function if any
console.log(result.error); // error thrown if any

See tests for full spec


Tests

Run tests using npm test

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