prevent spread arguments for all runes except $inspect

Author: Rich-Harris

packages/svelte/src/compiler/phases/2-analyze/visitors/CallExpression.js

@@ -17,6 +17,14 @@ export function CallExpression(node, context) {
 
 	const rune = get_rune(node, context.state.scope);
 
+	if (rune && rune !== '$inspect') {
+		for (const arg of node.arguments) {
+			if (arg.type === 'SpreadElement') {
+				e.rune_invalid_spread(node, rune);
+			}
+		}
+	}
+
 	switch (rune) {
 		case null:
 			if (!is_safe_identifier(node.callee, context.state.scope)) {
@@ -115,10 +123,6 @@ export function CallExpression(node, context) {
 				e.state_invalid_placement(node, rune);
 			}
 
-			if (node.arguments.some((arg) => arg.type === 'SpreadElement')) {
-				e.rune_invalid_spread(node, rune);
-			}
-
 			if ((rune === '$derived' || rune === '$derived.by') && node.arguments.length !== 1) {
 				e.rune_invalid_arguments_length(node, rune, 'exactly one argument');
 			} else if (node.arguments.length > 1) {