// Slot mechanics shared by the binding's plain-`.ts` hooks (copied from
// @octanejs/tanstack-query). The octane compiler injects a per-call-site Symbol slot into
// every hook call in `.tsrx`/`.tsx`, but these binding files are NOT compiled — so
// a hook here receives the caller's slot as its trailing argument and derives a
// distinct sub-slot for each base hook it composes.

import { subSlot } from 'octane';

export { subSlot };

// Split the compiler-injected (or .ts-forwarded) trailing slot off a hook's args,
// returning the user args (everything before it) and the slot.
export function splitSlot(args: any[]): [any[], symbol | undefined] {
	const tail = args[args.length - 1];
	const slot = typeof tail === 'symbol' ? (tail as symbol) : undefined;
	return [slot !== undefined ? args.slice(0, -1) : args, slot];
}