function API: function.name in depth

in depth, special cases

WHEN binding a function THEN the bound-function's name gets prefixed with "bound"

const weBoundFn = (() => {}).bind(null); assert.equal(weBoundFn.name, 'bound ');

WHEN creating a Function instance THEN the name is "anonymous"

const fn = (new Function()).bind(null); assert.equal(fn.name, 'bound anonymous');

Links

spec docs The specification text, this property was introduced with this version of JavaScript.
mdn docs The MDN pages describing this property, easy to read with examples.