WIP

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

@@ -693,12 +693,38 @@ export function analyze_component(root, source, options) {
 			let awaiting = false;
 			let i = 0;
 
-			for (const node of instance.ast.body) {
+			for (let node of instance.ast.body) {
+				if (node.type === 'ExportNamedDeclaration' && node.declaration) {
+					node = node.declaration;
+				}
+
+				if (node.type === 'VariableDeclaration') {
+					for (const declarator of node.declarations) {
+						const has_await = has_await_expression(declarator);
+						awaiting ||= has_await;
+
+						if (!awaiting) continue;
+
+						const id = b.id(`$$${i++}`);
+
+						for (const identifier of extract_identifiers(declarator.id)) {
+							analysis.awaited_declarations.set(identifier.name, {
+								id,
+								has_await,
+								pattern: declarator.id,
+								updated_by: new Set()
+							});
+						}
+					}
+				} else {
 					const has_await = has_await_expression(node);
 					awaiting ||= has_await;
 
 					if (!awaiting) continue;
 
+					if (node.type === 'ClassDeclaration' || node.type === 'FunctionDeclaration') {
+						throw new Error('TODO handle class/function declaration');
+					} else {
 						const id = b.id(`$$${i++}`);
 
 						analysis.awaited_statements.set(node, {
@@ -707,6 +733,8 @@ export function analyze_component(root, source, options) {
 						});
 					}
 				}
+			}
+		}
 
 		for (const { ast, scope, scopes } of [module, instance, template]) {
 			/** @type {AnalysisState} */

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

@@ -126,7 +126,7 @@ export interface ComponentAnalysis extends Analysis {
 	 */
 	awaited_declarations: Map<
 		string,
-		{ id: Identifier; pattern: Pattern; updated_by: Set<Identifier> }
+		{ id: Identifier; has_await: boolean; pattern: Pattern; updated_by: Set<Identifier> }
 	>;
 	/**
 	 * Information about top-level instance statements that need to be transformed