stacktrace.js

function stacktrace() {
    var stack;
    
    function trace(fn) {
        return (typeof fn !== 'function')
            ? []
            : trace(fn.caller).concat([fn.toString().split('(')[0].substring(9)]);
    }
    
    try {
        throw new Error('stacktrace');
    }
    catch (e) {
        if (typeof e.stack === 'string') {
            stack = e.stack;
        }
        else {
            var arrayStack = trace(arguments.callee.caller);
            arrayStack.shift();
            arrayStack.reverse();
            
            stack = arrayStack.join('\n\t');
        }
    }
    
    return stack;
}

stacktrace.ts

function stacktrace():string {
    let stack:string;
    
    function trace(fn:Function):Array<string> {
        return (typeof fn !== 'function')
            ? []
            : trace(fn.caller).concat([fn.toString().split('(')[0].substring(9)]);
    }
    
    try {
        throw new Error('stacktrace');
    }
    catch(e) {
        if(typeof e.stack === 'string'){
            stack = e.stack;
        }
        else {
            let arrayStack:Array<string> = trace(arguments.callee.caller);
            arrayStack.shift();
            arrayStack.reverse();
            
            stack = arrayStack.join('\n\t');
        }
    }
    
    return stack;
}