Runtime-Named Functions without Eval in JavaScript

Is it possible to create a JavaScript function with a name determined at runtime, without using eval or unconventional engine-specific features? Yes, this is now possible with ECMAScript 2015 (ES6) and beyond.

ES6 Solution: Computed Property Names

In ES6, an anonymous function expression assigned to an object property takes the name of that property. This can be combined with computed property names to name a function without new Function or eval. For example:

const dynamicName = "foo"   Math.floor(Math.random() * 1000);
const obj = {
    [dynamicName]() {
        throw new Error();
    },
};
const f = obj[dynamicName];

This creates a function named "foo###" where ### is a random 1-3 digit number.

Function Name Visibility

The function's name property will reflect the dynamic name. The compatibility note in the code snippet above refers to the fact that Edge and Safari currently do not show the name in stack traces.