Typescript decorators not working with arrow functions

I have a typescript decorator factory which console logs total time taken to execute a function, actual function execution results and parameters passed to the decorator as well.

e.g.

export function performaceLog(...args: any[]) {return (target: Object, key: string, descriptor: TypedPropertyDescriptor<any>) => {    var msg = '';    if (args.length != 0) {        msg = args.map(arg => arg).join('');    }    if (descriptor === undefined) {        descriptor = Object.getOwnPropertyDescriptor(target, key);    }    if (typeof descriptor.value !== 'function') {        throw new SyntaxError('Only functions can be used with log decorators');    }    var originalMethod = descriptor.value.bind(target);    descriptor.value = function() {        var funcArgs: any = [];        for (var i = 0; i < arguments.length; i++) {            funcArgs[i - 0] = arguments[i];        }        var startTime = performance.now();        console.log(`Begin function ${key} with params (${funcArgs}) : ${msg}`);        var result = originalMethod.apply(this, funcArgs);        var endTime = performance.now();        console.log(`End function ${key}. Execution time: ${endTime - startTime} milliseconds. Return result : ${result}`);        return result;    };    return descriptor;};}

I am using the above decorator with a function which is present in a class:(considering my class has other methods as well like ctor, get, set and utils).

class LoggerService {    @performaceLog('validate', 'message')    handleMessage(message) {        console.log(message);        return true;    };}

Function call looks like this:

handleMessage('decoratorValidation');

This gives me perfect output as:

Begin function handleMessage with params (decoratorValidation) : validate message     decoratorValidationEnd function handleMessage. Execution time: 0.3000000142492354 milliseconds. Return result : true

But when I change the function handleMessage to support arrow format (ES6), it throws me an error:

@performaceLog('validate', 'message')handleMessage = message => {    console.log(message);    return true;};

Error Message:

Unable to resolve signature of property decorator when called as an expression.

I have all the parameters set correctly in my tsconfig.json. I have my entire project supporting "ES6" target and I want the decorator to support arrow functions.