More emphasis on const gotchas?

[chakrit]

const x = { 'hello': 'world' };
x['hello'] = 'alien';
console.log(x['hello']); // prints 'alien'
x = { }                  // fails silently.
console.log(x['hello']); // still prints 'alien'

This (correctly) prints 'alien' but may not be apparent to many people. I think this should be at least noted in the example.

[getify]

// fails silently.

that won't be true of a conforming implementation. it'll throw an error affirmatively.