errorex
v2.3.2
Published
'Extensible Error Class' implementation and predefined additional error types for javascript
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ErrorEx
'Extensible Error Class' implementation and predefined additional error types for javascript.
Installation
$ npm install errorex --save
Usage
var {ErrorEx, RangeError} = require('errorex');
var error = new erx.RangeError('Value out of range')
.setMinValue(1)
.setMaxValue(5);
console.log(error.message); // Value out of range
console.log(error instanceof Error); // true
console.log(error instanceof erx.RangeError); // true
console.log(error.toString()); // RangeError: Value out of range
console.log(error.minValue); // 1
console.log(error.maxValue); // 5
console.log(error.stack); // Prints stack trace
Extending custom error classes in ES6
class MyError extends ErrorEx {
constructor(...args) {
super(...args);
this.myproperty = 1000;
}
setFoo(val) {
this.set('foo', val);
}
}
throw new MyError('My message %d', 10)
.setFoo('fooooo')
.set({
prop1: 1,
prop2: 2
});
Extending custom error classes in ES5
function MyError() {
ErrorEx.apply(this, arguments);
this.myproperty = 1000;
}
MyError.prototype = Object.create(ErrorEx.prototype);
MyError.prototype.constructor = MyError;
MyError.prototype.setFoo = function(val) {
this.set('foo', val);
};
throw new MyError('My message %d', 10).setFoo('fooooo');
Predefined error classes
ErrorEx: Base error class
ArgumentError: Extending from ErrorEx
RangeError: Extending from ErrorEx
HttpError: Extending from ErrorEx
HttpClientError: Extending from HttpError
HttpServerError: Extending from HttpError
Node Compatibility
- node
>= 0.10
;