dedicated binding.kind for legacy reactive imports

packages/svelte/src/compiler/phases/2-analyze/index.js

@@ -177,7 +177,7 @@ function get_delegated_event(node, context) {
 				// or any normal not reactive bindings that are mutated.
 				binding.kind === 'normal' ||
 				// or any reactive imports (those are rewritten) (can only happen in legacy mode)
-				(binding.kind === 'state' && binding.declaration_kind === 'import')) &&
+				binding.kind === 'legacy_reactive_import') &&
 			binding.mutated
 		) {
 			return non_hoistable;
@@ -532,7 +532,7 @@ const legacy_scope_tweaker = {
 						(state.reactive_statement || state.ast_type === 'template') &&
 						parent.type === 'MemberExpression'
 					) {
-						binding.kind = 'state';
+						binding.kind = 'legacy_reactive_import';
 					}
 				} else if (
 					binding.mutated &&

packages/svelte/src/compiler/phases/3-transform/client/transform-client.js

@@ -159,7 +159,7 @@ export function client_component(source, analysis, options) {
 	// Very very dirty way of making import statements reactive in legacy mode if needed
 	if (!analysis.runes) {
 		for (const [name, binding] of analysis.module.scope.declarations) {
-			if (binding.kind === 'state' && binding.declaration_kind === 'import') {
+			if (binding.kind === 'legacy_reactive_import') {
 				instance.body.unshift(
 					b.var('$$_import_' + name, b.call('$.reactive_import', b.thunk(b.id(name))))
 				);

packages/svelte/src/compiler/phases/3-transform/client/utils.js

@@ -74,7 +74,7 @@ export function serialize_get_binding(node, state) {
 		return b.call(node);
 	}
 
-	if (binding.kind === 'state' && binding.declaration_kind === 'import') {
+	if (binding.kind === 'legacy_reactive_import') {
 		return b.call('$$_import_' + node.name);
 	}
 
@@ -175,7 +175,7 @@ export function serialize_set_binding(node, context, fallback) {
 		return binding.mutation(node, context);
 	}
 
-	if (binding.kind === 'state' && binding.declaration_kind === 'import') {
+	if (binding.kind === 'legacy_reactive_import') {
 		return b.call(
 			'$$_import_' + binding.node.name,
 			b.assignment(

packages/svelte/src/compiler/types/index.d.ts

@@ -250,6 +250,7 @@ export interface Binding {
 	 * - `each`: An each block context variable
 	 * - `store_sub`: A $store value
 	 * - `legacy_reactive`: A `$:` declaration
+	 * - `legacy_reactive_import`: An imported binding that is mutated inside the component
 	 */
 	kind:
 		| 'normal'
@@ -259,7 +260,8 @@ export interface Binding {
 		| 'derived'
 		| 'each'
 		| 'store_sub'
-		| 'legacy_reactive';
+		| 'legacy_reactive'
+		| 'legacy_reactive_import';
 	declaration_kind: DeclarationKind;
 	/**
 	 * What the value was initialized with.