[Web] Add wasm and mjs files to package.json exports to improve bundler support (#26394)

### Description
Currently the files which are needed for wasm aren't exported from the
package at all.
The files in question are:
```
ort-wasm-simd-threaded.wasm
ort-wasm-simd-threaded.jsep.wasm
ort-wasm-simd-threaded.asyncify.wasm
ort-wasm-simd-threaded.mjs
ort-wasm-simd-threaded.jsep.mjs
ort-wasm-simd-threaded.asyncify.mjs
```

This PR changes that and adds them to `exports` field in the
`package.json`.

### Motivation and Context

Bundlers like `webpack` use the `copyPlugin` to move those files into
the `public` directory, so the files can be accessed by a stable url.
However more advanced and "state of the art" bundlers like `vite` are
able to [import asset urls
directly](https://vite.dev/guide/assets.html#explicit-url-imports). Vite
takes the asset, moves it to to public assets folder (possibily renames
the asset and adds a hash etc.). The imported value then is the bundled
assets final url.

Those urls can then be used in the `env.wasm.wasmPaths` directly. In
vites case the full code example is:
```js
import wasmUrl from 'onnxruntime-web/ort-wasm-simd-threaded.wasm?url';
import mjsUrl from 'onnxruntime-web/ort-wasm-simd-threaded.mjs?url';

env.wasm.wasmPaths = {
  wasm: wasmUrl,
  mjs: mjsUrl,
};
```

With those added exports we can leverage more of the bundlers
capabilities and in vites case there isn't any need to add any
additional configs. It would just work.

When importing we also get proper suggestions:
<img width="1604" height="498" alt="imports"
src="https://github.com/user-attachments/assets/2678ccc2-ae46-4289-aa6e-607ecbc5388b"
/>


----

I would like additional tests to ensure that the exports are available,
but I couldn't make the `e2e` tests work on my system. I would
appreciate some guidance on that topic.

Author: KingSora

js/web/package.json

@@ -115,7 +115,15 @@
         "default": "./dist/ort.jspi.bundle.min.mjs"
       },
       "require": "./dist/ort.jspi.min.js"
-    }
+    },
+    "./ort-wasm-simd-threaded.wasm": "./dist/ort-wasm-simd-threaded.wasm",
+    "./ort-wasm-simd-threaded.jsep.wasm": "./dist/ort-wasm-simd-threaded.jsep.wasm",
+    "./ort-wasm-simd-threaded.jspi.wasm": "./dist/ort-wasm-simd-threaded.jspi.wasm",
+    "./ort-wasm-simd-threaded.asyncify.wasm": "./dist/ort-wasm-simd-threaded.asyncify.wasm",
+    "./ort-wasm-simd-threaded.mjs": "./dist/ort-wasm-simd-threaded.mjs",
+    "./ort-wasm-simd-threaded.jsep.mjs": "./dist/ort-wasm-simd-threaded.jsep.mjs",
+    "./ort-wasm-simd-threaded.jspi.mjs": "./dist/ort-wasm-simd-threaded.jspi.mjs",
+    "./ort-wasm-simd-threaded.asyncify.mjs": "./dist/ort-wasm-simd-threaded.asyncify.mjs"
   },
   "types": "./types.d.ts",
   "description": "A Javascript library for running ONNX models on browsers"

js/web/test/e2e/package.json

@@ -20,6 +20,7 @@
     "rollup": "^4.13.2",
     "rollup-plugin-copy": "^3.5.0",
     "tree-kill": "^1.2.2",
+    "vite": "^7.1.12",
     "webpack-cli": "^5.1.4"
   },
   "scripts": {
@@ -32,7 +33,10 @@
     "build:p:esmjs": "parcel build --no-autoinstall --target esm && node ./bundler.esm.postprocess.js ./dist/parcel_esm_js/main.js",
     "build:p:umdjs": "parcel build --no-autoinstall --target umd",
     "build:p": "npm run build:p:esmjs && npm run build:p:umdjs",
-    "build": "npm run build:w && npm run build:r && npm run build:p"
+    "build:v:esmjs": "vite build -c vite.config.esm-js.js",
+    "build:v:umdjs": "vite build -c vite.config.umd-js.js",
+    "build:v": "npm run build:v:esmjs && npm run build:v:umdjs",
+    "build": "npm run build:v && npm run build:w && npm run build:r && npm run build:p"
   },
   "@parcel/resolver-default": {
     "packageExports": true

js/web/test/e2e/run-data.js

@@ -77,6 +77,8 @@ const BUNDLER_TEST_CASES = [
   ['./dist/rollup_umd_js/ort-test-e2e.bundle.js', 'iife'],
   ['./dist/parcel_esm_js/main.js', 'esm'],
   ['./dist/parcel_umd_js/main.js', 'iife'],
+  ['./dist/vite_esm_js/ort-test-e2e.bundle.mjs', 'esm'],
+  ['./dist/vite_umd_js/ort-test-e2e.bundle.js', 'iife'],
 ];
 
 module.exports = {

js/web/test/e2e/src/cjs-js/vite-main.js

@@ -0,0 +1,13 @@
+require('onnxruntime-web/ort-wasm-simd-threaded.wasm?url&no-inline');
+require('onnxruntime-web/ort-wasm-simd-threaded.mjs?url&no-inline');
+
+require('onnxruntime-web/ort-wasm-simd-threaded.jsep.wasm?url&no-inline');
+require('onnxruntime-web/ort-wasm-simd-threaded.jsep.mjs?url&no-inline');
+
+require('onnxruntime-web/ort-wasm-simd-threaded.jspi.wasm?url&no-inline');
+require('onnxruntime-web/ort-wasm-simd-threaded.jspi.mjs?url&no-inline');
+
+require('onnxruntime-web/ort-wasm-simd-threaded.asyncify.wasm?url&no-inline');
+require('onnxruntime-web/ort-wasm-simd-threaded.asyncify.mjs?url&no-inline');
+
+require('./main');

js/web/test/e2e/src/esm-js/vite-main.js

@@ -0,0 +1,13 @@
+import 'onnxruntime-web/ort-wasm-simd-threaded.wasm?url&no-inline';
+import 'onnxruntime-web/ort-wasm-simd-threaded.mjs?url&no-inline';
+
+import 'onnxruntime-web/ort-wasm-simd-threaded.jsep.wasm?url&no-inline';
+import 'onnxruntime-web/ort-wasm-simd-threaded.jsep.mjs?url&no-inline';
+
+import 'onnxruntime-web/ort-wasm-simd-threaded.jspi.wasm?url&no-inline';
+import 'onnxruntime-web/ort-wasm-simd-threaded.jspi.mjs?url&no-inline';
+
+import 'onnxruntime-web/ort-wasm-simd-threaded.asyncify.wasm?url&no-inline';
+import 'onnxruntime-web/ort-wasm-simd-threaded.asyncify.mjs?url&no-inline';
+
+import './main.js';

js/web/test/e2e/vite.config.esm-js.js

@@ -0,0 +1,22 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+const path = require('node:path');
+const { defineConfig } = require('vite');
+
+module.exports = defineConfig({
+  build: {
+    outDir: path.resolve(__dirname, 'dist/vite_esm_js'),
+    emptyOutDir: true,
+    sourcemap: false,
+    lib: {
+      name: 'testPackageConsuming',
+      entry: path.resolve(__dirname, 'src/esm-js/vite-main.js'),
+      fileName: () => 'ort-test-e2e.bundle.mjs',
+      formats: ['es'],
+    },
+    minify: false,
+    assetsDir: './',
+    assetsInlineLimit: 0,
+  },
+});

js/web/test/e2e/vite.config.umd-js.js

@@ -0,0 +1,28 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+const path = require('node:path');
+const { defineConfig } = require('vite');
+
+module.exports = defineConfig({
+  build: {
+    outDir: path.resolve(__dirname, 'dist/vite_umd_js'),
+    emptyOutDir: true,
+    sourcemap: false,
+    lib: {
+      name: 'testPackageConsuming',
+      entry: path.resolve(__dirname, 'src/esm-js/vite-main.js'),
+      fileName: () => 'ort-test-e2e.bundle.js',
+      formats: ['umd'],
+    },
+    minify: false,
+    assetsDir: './',
+    assetsInlineLimit: 0,
+    commonjsOptions: {
+      include: ['**/*.js'],
+      exclude: [],
+      transformMixedEsModules: true,
+      ignoreDynamicRequires: true,
+    },
+  },
+});