How to avoid 'cannot read property of undefined' errors?

Question

In my code, I deal with an array that has some entries with many objects nested inside one another, where as some do not. It looks something like the following:

Answer 1

If you use Babel, you can already use the optional chaining syntax with @babel/plugin-proposal-optional-chaining Babel plugin. This would allow you to replace this:

console.log(a && a.b && a.b.c);

with this:

console.log(a?.b?.c);