This function doesn't perform complete freeze. Object.keys(object) lists only own enumerable properties, leaving behind the non-enumerable ones. For example:

const o = Object.create(null, {
    prop1: {value:{word:'Hello'}, writable: true, configurable: true, enumerable: true},
    prop2: {value:{word:'World'}, writable: true, configurable: true, enumerable: true},
    prop3: {value:{word:"Don't forget me!"}, writable: true, configurable: true, enumerable: false}, 
});

Object.deepFreeze(o);

o.prop3.word === "Don't forget me!";  --> true
o.prop3.word = "I've been left unfrozen:-(";
o.prop3.word === "I've been left unfrozen:-(";  --> true

🐱‍🏍 great!

github.com/aloisdg/awesome-regex

Nice one! where can I learn about this kinds regex

Such a sweet, well-written solution. Even looking at it makes me feel better (and a bit jealous.)

You could make it even simpler with Object.values instead of Object.keys and thus avoid [] accessors

this code is incredibly fast due to the absence of a split-join chain

I was thinking about how to get the names passed down as well...but always forgot that functions are first-order objects

I cheated with global variable instead -_________-

This returns true with a bad pw of input "fjd3IR9.;"
Will incorrectly approve it.

I'm not sure what you mean. Whatever it is, it was a coincidence, as ES2015 wasn't really a thing back when I did this (2013)!