Coffee exceptions

catch.coffee

req = (request, errorOnTimeout) ->
    try
        request.send
    catch InvalidHeaderError, e
        console.error 'wrong headers'
    catch TimeoutError, e
        if errorOnTimeout
            console.error 'timed out!'
        else
            console.log 'timed out, trying once more'
            req(request, true)
    catch Error, e
        console.log 'some other error'

catch.js

function request(request, errorOnTimeout) {
    try {
        request.send();
    } catch (error) {
        if (error instanceof InvalidHeaderError) {
            var e = error;
            console.error('wrong headers');
        } else if (error instanceof TimeoutError) {
            var e = error;
            if (errorOnTimeout) {
                console.error('timed out!');
            } else {
                console.log('timed out, trying again');
                req(request, true);
            }
        } else if (error instanceof Error) {
            var e = error;
            console.log('some other error');
        }
    }
}