on second thoughts

packages/svelte/src/compiler/phases/2-analyze/types.d.ts

@@ -1,6 +1,6 @@
 import type { Scope } from '../scope.js';
 import type { ComponentAnalysis, ReactiveStatement } from '../types.js';
-import type { AST, ExpressionMetadata, StateFields, ValidatedCompileOptions } from '#compiler';
+import type { AST, ExpressionMetadata, StateField, ValidatedCompileOptions } from '#compiler';
 import type { ClassBody } from 'estree';
 
 export interface AnalysisState {
@@ -21,8 +21,8 @@ export interface AnalysisState {
 	expression: ExpressionMetadata | null;
 
 	/** Used to analyze class state. */
-	classes: Map<ClassBody, StateFields>;
-	state_fields: StateFields | null;
+	classes: Map<ClassBody, Record<string, StateField>>;
+	state_fields: Record<string, StateField> | null;
 
 	function_depth: number;
 

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

@@ -1,5 +1,5 @@
 /** @import { AssignmentExpression, ClassBody, PropertyDefinition, Expression, PrivateIdentifier, MethodDefinition } from 'estree' */
-/** @import { StateFields } from '#compiler' */
+/** @import { StateField } from '#compiler' */
 /** @import { Context } from '../types' */
 import { get_rune } from '../../scope.js';
 import * as e from '../../../errors.js';
@@ -15,7 +15,7 @@ export function ClassBody(node, context) {
 		return;
 	}
 
-	/** @type {StateFields} */
+	/** @type {Record<string, StateField>} */
 	const state_fields = {};
 
 	/** @type {string[]} */

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

@@ -271,11 +271,9 @@ export interface ExpressionMetadata {
 	has_call: boolean;
 }
 
-export interface StateFields {
-	[name: string]: {
-		type: StateCreationRuneName;
-		node: PropertyDefinition | AssignmentExpression;
-	};
+export interface StateField {
+	type: StateCreationRuneName;
+	node: PropertyDefinition | AssignmentExpression;
 }
 
 export * from './template.js';