{
  named: function foo() {},

  arrow: () => 1,

  method() {},

  anonymous: (() => () => 1)(),

  "empty name": (() => {
    const f = function () {};
    Object.defineProperty(f, "name", { value: "" });
    return f;
  })(),

  class: class Foo {},

  generator: function* gen() {},

  async: async function af() {},

  "with properties": Object.assign(function bar() {}, { prop: 1 }),
}

--

named:
function foo(...){...}
function foo(...) {...}
{
  "/function": "foo(...)"
}

arrow:
function arrow(...){...}
function arrow(...) {...}
{
  "/function": "arrow(...)"
}

method:
function method(...){...}
function method(...) {...}
{
  "/function": "method(...)"
}

anonymous:
(...)=>{...}
(...) => {...}
{
  "/function": "<anonymous>(...)"
}

empty name:
(...)=>{...}
(...) => {...}
{
  "/function": "<anonymous>(...)"
}

class:
function Foo(...){...}
function Foo(...) {...}
{
  "/function": "Foo(...)"
}

generator:
function gen(...){...}
function gen(...) {...}
{
  "/function": "gen(...)"
}

async:
function af(...){...}
function af(...) {...}
{
  "/function": "af(...)"
}

with properties:
function bar(...){...}
function bar(...) {...}
{
  "/function": "bar(...)"
}