chore: enforce .js file extensions in imports via nodenext module resolution

Switch tsconfig from moduleResolution "bundler" to "nodenext" to enforce
explicit .js extensions on all relative imports. This provides IDE-level
enforcement (ts(2835) errors) and tsc --noEmit validation.

- Change module/moduleResolution to "nodenext"
- Remove allowImportingTsExtensions (no longer needed)
- Fix all relative imports to use .js extensions
- Exclude vite submodule symlinks from type-checking (packages/core/)

Author: fengmk2

packages/cli/build.ts

@@ -38,7 +38,7 @@ import {
   ModuleKind,
 } from 'typescript';
 
-import { generateLicenseFile } from '../../scripts/generate-license.ts';
+import { generateLicenseFile } from '../../scripts/generate-license.js';
 import corePkg from '../core/package.json' with { type: 'json' };
 import testPkg from '../test/package.json' with { type: 'json' };
 
@@ -115,7 +115,7 @@ async function buildNapiBinding() {
   });
 
   const outputs = await task;
-  const viteConfig = await import('../../vite.config');
+  const viteConfig = await import('../../vite.config.js');
   for (const output of outputs) {
     if (output.kind !== 'node') {
       const { code, errors } = await format(output.path, await readFile(output.path, 'utf8'), {

packages/cli/src/__tests__/index.spec.ts

@@ -8,7 +8,7 @@ import {
   defaultBrowserPort,
   defineConfig,
   defineProject,
-} from '../index';
+} from '../index.js';
 
 test('should keep vitest exports stable', () => {
   expect(defineConfig).toBeTypeOf('function');

packages/cli/src/__tests__/pack.spec.ts

@@ -8,7 +8,7 @@ import {
   resolveUserConfig,
   buildWithConfigs,
   enableDebug,
-} from '../pack';
+} from '../pack.js';
 
 test('should export all pack APIs from @voidzero-dev/vite-plus-core/pack', () => {
   expect(defineConfig).toBeTypeOf('function');

packages/cli/src/__tests__/resolve-vite-config.spec.ts

@@ -5,7 +5,7 @@ import path from 'node:path';
 
 import { afterEach, beforeEach, describe, expect, it } from 'vitest';
 
-import { findViteConfigUp } from '../resolve-vite-config';
+import { findViteConfigUp } from '../resolve-vite-config.js';
 
 describe('findViteConfigUp', () => {
   let tempDir: string;

packages/cli/src/define-config.ts

@@ -3,7 +3,7 @@ import {
   type ConfigEnv,
 } from '@voidzero-dev/vite-plus-test/config';
 
-import type { UserConfig } from './index';
+import type { UserConfig } from './index.js';
 
 type ViteUserConfigFnObject = (env: ConfigEnv) => UserConfig;
 type ViteUserConfigFnPromise = (env: ConfigEnv) => Promise<UserConfig>;

packages/cli/src/index.ts

@@ -3,9 +3,9 @@ import type { OxfmtConfig } from 'oxfmt';
 import type { OxlintConfig } from 'oxlint';
 
 import { defineConfig } from './define-config.js';
-import type { PackUserConfig } from './pack';
-import type { RunConfig } from './run-config';
-import type { StagedConfig } from './staged-config';
+import type { PackUserConfig } from './pack.js';
+import type { RunConfig } from './run-config.js';
+import type { StagedConfig } from './staged-config.js';
 
 declare module '@voidzero-dev/vite-plus-core' {
   interface UserConfig {

packages/cli/templates/generator/bin/index.ts

@@ -2,6 +2,6 @@
 
 import { runTemplateCLI } from 'bingo';
 
-import template from '../src/template.ts';
+import template from '../src/template.js';
 
 process.exitCode = await runTemplateCLI(template);

packages/core/build-support/find-create-require.ts

@@ -10,7 +10,7 @@ import {
   type VariableDeclarator,
 } from 'oxc-parser';
 
-import { createModuleEntryFileName } from './build-cjs-deps';
+import { createModuleEntryFileName } from './build-cjs-deps.js';
 
 // Node.js built-in modules (without node: prefix)
 const nodeBuiltins = new Set(builtinModules);

packages/core/build.ts

@@ -15,18 +15,18 @@ import { build, type BuildOptions } from 'rolldown';
 import { dts } from 'rolldown-plugin-dts';
 import { glob } from 'tinyglobby';
 
-import { generateLicenseFile } from '../../scripts/generate-license.ts';
-import { buildCjsDeps } from './build-support/build-cjs-deps';
-import { replaceThirdPartyCjsRequires } from './build-support/find-create-require';
-import { RewriteImportsPlugin } from './build-support/rewrite-imports';
+import { generateLicenseFile } from '../../scripts/generate-license.js';
+import { buildCjsDeps } from './build-support/build-cjs-deps.js';
+import { replaceThirdPartyCjsRequires } from './build-support/find-create-require.js';
+import { RewriteImportsPlugin } from './build-support/rewrite-imports.js';
 import {
   createRolldownRewriteRules,
   createViteRewriteRules,
   rewriteModuleSpecifiers,
   type ReplacementRule,
-} from './build-support/rewrite-module-specifiers';
+} from './build-support/rewrite-module-specifiers.js';
 import pkgJson from './package.json' with { type: 'json' };
-import viteRolldownConfig from './vite-rolldown.config';
+import viteRolldownConfig from './vite-rolldown.config.js';
 
 const projectDir = join(fileURLToPath(import.meta.url), '..');
 

packages/test/build.ts

@@ -56,7 +56,7 @@ import { format } from 'oxfmt';
 import { build } from 'rolldown';
 import { dts } from 'rolldown-plugin-dts';
 
-import { generateLicenseFile } from '../../scripts/generate-license.ts';
+import { generateLicenseFile } from '../../scripts/generate-license.js';
 import pkg from './package.json' with { type: 'json' };
 
 const projectDir = dirname(fileURLToPath(import.meta.url));