“It’s — all — my — ruddy — fault!” he sobbed, his face in his hands. “I told the evil git how ter get past Fluffy! I told him! It was the only thing he didn’t know, an’ I told him! Yeh could’ve died! All fer a dragon egg! I’ll never drink again! I should be chucked out an’ made ter live as a Muggle!”
“Hagrid!” said Harry, shocked to see Hagrid shaking with grief and remorse, great tears leaking down into his beard. “Hagrid, he’d (1) have found out somehow, this is Voldemort we’re talking about, he’d (2) have found out even if you hadn’t told him.”
“Yeh could’ve (3) died!” sobbed Hagrid. “An’ don’ say the name!”
(Harry Potter and the Sorcerer's Stone)
In (1) and (2) are ‘would’ meaning OALD #3, I guess, unlike (3). But I’m not sure of that. Are they as what I’ve guessed or not?