fix: add .js extensions in lib imports

Author: eye-wave

src/lib/Knob.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
-	import { normalize, format, unnormalizeToString, unnormalizeToNumber } from './params';
+	import { normalize, format, unnormalizeToString, unnormalizeToNumber } from './params.js';
 	import { spring } from 'svelte/motion';
-	import type { EnumParam, FloatParam } from './params';
+	import type { EnumParam, FloatParam } from './params.js';
 
 	interface Props {
 		style?: string;

src/lib/index.ts

@@ -1,5 +1,5 @@
 // Reexport your entry components here
-export * from './params';
+export * from './params.js';
 import Knob from './Knob.svelte';
 
 export { Knob };

src/lib/params.ts

@@ -1,13 +1,13 @@
-import type { EnumParam } from './params/enum-param';
-import type { FloatParam } from './params/float-param';
+import type { EnumParam } from './params/enum-param.js';
+import type { FloatParam } from './params/float-param.js';
 
-import * as ENUM from './params/enum-param';
-import * as FLOAT from './params/float-param';
+import * as ENUM from './params/enum-param.js';
+import * as FLOAT from './params/float-param.js';
 
-export { createEnumParam, type EnumParam, type Variant } from './params/enum-param';
-export { createFloatParam, type FloatParam } from './params/float-param';
+export { createEnumParam, type EnumParam, type Variant } from './params/enum-param.js';
+export { createFloatParam, type FloatParam } from './params/float-param.js';
 
-export * from './params/range';
+export * from './params/range.js';
 
 export type Param = EnumParam<readonly string[]> | FloatParam;
 

src/lib/params/float-param.ts

@@ -1,4 +1,4 @@
-import { type Range } from './range';
+import { type Range } from './range.js';
 
 export type FloatParam = {
 	type: 'float-param';

src/routes/Hello.svelte

@@ -7,6 +7,8 @@
 		"module": "ESNext",
 		"moduleDetection": "force",
 		"allowJs": true,
+		"checkJs": true,
+		"resolveJsonModule": true,
 
 		// Bundler mode
 		"moduleResolution": "bundler",