Trim and peel the pineapple, cutting out the scraggy bits, then into wedges, removing and discarding the tough core. Peel the garlic and shallots, deseed the chillies, then pulse in a food processor until fairly fine. Pulse in the pineapple until fine, but still with a bit of texture. Stir in the sugar, pulse briefly to combine, then squeeze and stir in the lime juice. Season to perfection with sea salt and black pepper, then serve.