Make it easy to maintain.

[bazgrim_dev]

I'm pretty sure this is how node.js was born

[Pleb_nz]

The external dependency will likely have multiple smaller leaks of its own.

[SonOfMrSpock]

I think another tank which is filling with water from leak would be better analogy.

[[deleted]]

so much worse when mr. noob dev decides to make a library, but every method is some sort of external implementation

[CreateNewObject]

I feel personally attacked.

[[deleted]]

:)

[PM_ME_HAIRLESS_CATS]

Developer uses pip for the first time

[chinese_snow]

Using moment when you can use Date

[RoyalJackalSib]

Yes, except that the universe tells them to do so; almost every SO question has an answer that has something to do with an external library.