How to get file/method info in JavaScript code. For example for logging

backtrace.js

/* jshint expr:true, boss:true, node:true */

var backtrace = new Error().stack.split('\n');

var i = 0, line, parts;
while(line = backtrace[i++]) {
    if(line.indexOf(__dirname) === -1) {
        continue;
    }

    parts = line.match(/^\s+at (?:(.*) \()?(.+):([0-9]+):([0-9]+)\)?$/);
    break;
}

backtrace = parts.slice(-4);

console.log(backtrace);

gistfile1.sh

[ 'Object.<anonymous>', '/Users/varankinv/workspace/backtrace.js', '3', '17' ]
---^                  ---------^                              ------^----^
method                file                                    position

stacktrace.js

/* jshint expr:true, boss:true, node:true */

function getStack() {
    var orig = Error.prepareStackTrace;
    Error.prepareStackTrace = function(err, stack) {
        return stack;
    };

    var err = new Error();
    Error.captureStackTrace(err, arguments.callee);

    var stack = err.stack;
    Error.prepareStackTrace = orig;

    return stack;
}

(function A() {
    var frame = getStack(),
        i = 0,
        f;
    while(f = frame[i++]) {
        //console.dir(f);
        console.log('\033[31;40m' + f.getFunctionName() + '\033[0m ');
        console.log(f.getLineNumber());
    }
}());

See https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi for more info about V8 Stack Trace API