chore: Enable isolatedDeclarations

src/formatter/createPropFilter.ts

@@ -2,7 +2,7 @@
 export default function createPropFilter<Value>(
   props: Record<string, Value>,
   filter: string[] | ((propValue: Value, key: string) => boolean),
-) {
+): (key: string) => boolean {
   if (Array.isArray(filter)) {
     return (key: string) => filter.indexOf(key) === -1;
   }

src/options.ts

@@ -27,7 +27,7 @@ export type Options = {
 // Options accepted by reactElementToJSXString
 export type PublicOptions = Partial<Options>;
 
-export const defaultOptions = {
+export const defaultOptions: Options = {
   filterProps: [],
   showDefaultProps: true,
   showFunctions: false,

tsconfig.json

@@ -3,6 +3,7 @@
     "jsx": "react-jsx",
     "module": "ESNext",
     "declaration": true,
+    "isolatedDeclarations": true,
     "target": "ESNext",
     "moduleResolution": "bundler",
     "strict": true,

tsdown.config.ts

@@ -1,6 +1,6 @@
-import { defineConfig } from "tsdown";
+import { type UserConfig, defineConfig } from "tsdown";
 
-export default defineConfig({
+const config: UserConfig = defineConfig({
   entry: ["src/index.ts"],
   format: ["esm"],
   sourcemap: true,
@@ -15,3 +15,5 @@ export default defineConfig({
   },
   target: ["node24", "es2020"],
 });
+
+export default config;

vitest.config.ts

@@ -1,7 +1,7 @@
 import react from "@vitejs/plugin-react";
-import { defineConfig } from "vitest/config";
+import { type ViteUserConfig, defineConfig } from "vitest/config";
 
-export default defineConfig({
+const config: ViteUserConfig = defineConfig({
   plugins: [react()],
   test: {
     globals: false,
@@ -10,3 +10,5 @@ export default defineConfig({
     mockReset: true,
   },
 });
+
+export default config;