Learn French: Comme le feu d'artifice illumine la nuit ! - How the fireworks display illuminates the night!

Yes! Comme, Que, and Ce que are interchangeable when expressing an exclamation about an action. You could say Que le feu d'artifice illumine la nuit ! or Ce que le feu d'artifice illumine la nuit ! with the exact same meaning.

Why is le feu d'artifice singular here when the English translation says fireworks?

In French, un feu d'artifice refers to the entire fireworks display as a single event, so it is treated as a singular noun. If you used the plural les feux d'artifice, it would mean multiple separate fireworks shows.

Is it possible to invert the subject and verb after Comme, just like in a question?

No, exclamative clauses with Comme, Que, or Ce que always keep the standard statement word order (subject followed by the verb). Inverting them would be incorrect here because it is an exclamation, not a question.

Does Comme modify the noun or the verb in this sentence?

It modifies the intensity of the entire action, specifically the verb illumine. It translates to how much the fireworks illuminate the night. If you wanted to modify a noun directly (like What a night!), you would need to use the exclamatory adjective Quelle instead.