Merge branch 'effect-pending-value' into effect-pending-value-2

packages/svelte/src/compiler/phases/3-transform/client/types.d.ts

@@ -24,6 +24,8 @@ export interface ClientTransformState extends TransformState {
 	/** `true` if we're transforming the contents of `<script>` */
 	readonly is_instance: boolean;
 
+	effect_pending: Map<Expression, Identifier>;
+
 	readonly transform: Record<
 		string,
 		{

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

@@ -68,6 +68,7 @@ export function Fragment(node, context) {
 		memoizer: new Memoizer(),
 		template: new Template(),
 		transform: { ...context.state.transform },
+		effect_pending: new Map(),
 		metadata: {
 			namespace,
 			bound_contenteditable: context.state.metadata.bound_contenteditable
@@ -152,6 +153,10 @@ export function Fragment(node, context) {
 
 	body.push(...state.consts);
 
+	for (const [expression, id] of state.effect_pending) {
+		body.push(b.const(id, b.call('$.pending', b.thunk(expression))));
+	}
+
 	if (has_await) {
 		body.push(b.if(b.call('$.aborted'), b.return()));
 	}

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

@@ -310,7 +310,8 @@ export function RegularElement(node, context) {
 		metadata,
 		scope: /** @type {Scope} */ (context.state.scopes.get(node.fragment)),
 		preserve_whitespace:
-			context.state.preserve_whitespace || node.name === 'pre' || node.name === 'textarea'
+			context.state.preserve_whitespace || node.name === 'pre' || node.name === 'textarea',
+		effect_pending: new Map()
 	};
 
 	const { hoisted, trimmed } = clean_nodes(
@@ -378,6 +379,10 @@ export function RegularElement(node, context) {
 		}
 	}
 
+	for (const [expression, id] of state.effect_pending) {
+		child_state.init.push(b.const(id, b.call('$.pending', b.thunk(expression))));
+	}
+
 	if (node.fragment.nodes.some((node) => node.type === 'SnippetBlock')) {
 		// Wrap children in `{...}` to avoid declaration conflicts
 		context.state.init.push(

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

@@ -57,6 +57,7 @@ export namespace AST {
 			 */
 			dynamic: boolean;
 			has_await: boolean;
+			effect_pending_expressions: Expression[];
 		};
 	}