Elep

"use strict";
module.exports = function(Promise) {
function returner() {
    return this.value;
}
function thrower() {
    throw this.reason;
}

Promise.prototype["return"] =
Promise.prototype.thenReturn = function (value) {
    if (value instanceof Promise) value.suppressUnhandledRejections();
    return this._then(
        returner, undefined, undefined, {value: value}, undefined);
};

Promise.prototype["throw"] =
Promise.prototype.thenThrow = function (reason) {
    return this._then(
        thrower, undefined, undefined, {reason: reason}, undefined);
};

Promise.prototype.catchThrow = function (reason) {
    if (arguments.length <= 1) {
        return this._then(
            undefined, thrower, undefined, {reason: reason}, undefined);
    } else {
        var _reason = arguments[1];
        var handler = function() {throw _reason;};
        return this.caught(reason, handler);
    }
};

Promise.prototype.catchReturn = function (value) {
    if (arguments.length <= 1) {
        if (value instanceof Promise) value.suppressUnhandledRejections();
        return this._then(
            undefined, returner, undefined, {value: value}, undefined);
    } else {
        var _value = arguments[1];
        if (_value instanceof Promise) _value.suppressUnhandledRejections();
        var handler = function() {return _value;};
        return this.caught(value, handler);
    }
};
};