errors.js

"use strict";
var es5 = require("./es5.js");
var Objectfreeze = es5.freeze;
var util = require("./util.js");
var inherits = util.inherits;
var notEnumerableProp = util.notEnumerableProp;

function subError(nameProperty, defaultMessage) {
    function SubError(message) {
        if (!(this instanceof SubError)) return new SubError(message);
        notEnumerableProp(this, "message",
            typeof message === "string" ? message : defaultMessage);
        notEnumerableProp(this, "name", nameProperty);
        if (Error.captureStackTrace) {
            Error.captureStackTrace(this, this.constructor);
        } else {
            Error.call(this);
        }
    }
    inherits(SubError, Error);
    return SubError;
}

var _TypeError, _RangeError;
var Warning = subError("Warning", "warning");
var CancellationError = subError("CancellationError", "cancellation error");
var TimeoutError = subError("TimeoutError", "timeout error");
var AggregateError = subError("AggregateError", "aggregate error");
try {
    _TypeError = TypeError;
    _RangeError = RangeError;
} catch(e) {
    _TypeError = subError("TypeError", "type error");
    _RangeError = subError("RangeError", "range error");
}

var methods = ("join pop push shift unshift slice filter forEach some " +
    "every map indexOf lastIndexOf reduce reduceRight sort reverse").split(" ");

for (var i = 0; i < methods.length; ++i) {
    if (typeof Array.prototype[methods[i]] === "function") {
        AggregateError.prototype[methods[i]] = Array.prototype[methods[i]];
    }
}

es5.defineProperty(AggregateError.prototype, "length", {
    value: 0,
    configurable: false,
    writable: true,
    enumerable: true
});
AggregateError.prototype["isOperational"] = true;
var level = 0;
AggregateError.prototype.toString = function() {
    var indent = Array(level * 4 + 1).join(" ");
    var ret = "\n" + indent + "AggregateError of:" + "\n";
    level++;
    indent = Array(level * 4 + 1).join(" ");
    for (var i = 0; i < this.length; ++i) {
        var str = this[i] === this ? "[Circular AggregateError]" : this[i] + "";
        var lines = str.split("\n");
        for (var j = 0; j < lines.length; ++j) {
            lines[j] = indent + lines[j];
        }
        str = lines.join("\n");
        ret += str + "\n";
    }
    level--;
    return ret;
};

function OperationalError(message) {
    if (!(this instanceof OperationalError))
        return new OperationalError(message);
    notEnumerableProp(this, "name", "OperationalError");
    notEnumerableProp(this, "message", message);
    this.cause = message;
    this["isOperational"] = true;

    if (message instanceof Error) {
        notEnumerableProp(this, "message", message.message);
        notEnumerableProp(this, "stack", message.stack);
    } else if (Error.captureStackTrace) {
        Error.captureStackTrace(this, this.constructor);
    }

}
inherits(OperationalError, Error);

var errorTypes = Error["__BluebirdErrorTypes__"];
if (!errorTypes) {
    errorTypes = Objectfreeze({
        CancellationError: CancellationError,
        TimeoutError: TimeoutError,
        OperationalError: OperationalError,
        RejectionError: OperationalError,
        AggregateError: AggregateError
    });
    notEnumerableProp(Error, "__BluebirdErrorTypes__", errorTypes);
}

module.exports = {
    Error: Error,
    TypeError: _TypeError,
    RangeError: _RangeError,
    CancellationError: errorTypes.CancellationError,
    OperationalError: errorTypes.OperationalError,
    TimeoutError: errorTypes.TimeoutError,
    AggregateError: errorTypes.AggregateError,
    Warning: Warning
};