Rust-to-WASM

browser/resources/settings/getting_started_page/brave_account_create_dialog.ts

@@ -14,6 +14,10 @@ import { getCss } from './brave_account_create_dialog.css.js'
 import { getHtml } from './brave_account_create_dialog.html.js'
 import { isEmailValid } from './brave_account_common.js'
 
+// @ts-ignore
+import { return42, return24 } from 'chrome://resources/brave/some_resource.bundle.js'
+console.log(return42(), return24())
+
 class PasswordStrengthMeter extends I18nMixinLit(CrLitElement) {
   static get is() {
     return 'password-strength-meter'

browser/resources/settings/getting_started_page/getting_started.html

@@ -1,5 +1,6 @@
 <style include="settings-shared md-select">
 </style>
+<settings-brave-account-row></settings-brave-account-row>
 <settings-people-page prefs="{{prefs}}"
   page-visibility="[[pageVisibility]]">
 </settings-people-page>

browser/resources/settings/getting_started_page/getting_started.ts

@@ -5,6 +5,7 @@
 
 import {PolymerElement} from 'chrome://resources/polymer/v3_0/polymer/polymer_bundled.min.js'
 
+import './brave_account_row.js'
 import '../people_page/people_page.js'
 import '../settings_page/settings_animated_pages.js'
 import '../default_browser_page/default_browser_page.js'

chromium_src/ui/webui/webui_util.cc

@@ -28,7 +28,7 @@ bool IsChromeUntrustedDataSource(content::WebUIDataSource* source) {
 
 constexpr char kBraveCSP[] =
     "script-src chrome://resources chrome://webui-test "
-    "'self';";
+    "'wasm-unsafe-eval' 'self';";
 
 constexpr char kBraveUntrustedCSP[] =
     "script-src chrome-untrusted://resources "

patches/tools-grit-grit-format-minifier.py.patch

@@ -0,0 +1,12 @@
+diff --git a/tools/grit/grit/format/minifier.py b/tools/grit/grit/format/minifier.py
+index bd2dc7f9936a3c3a1d892be3b05be02a6910c571..1cfc9b0031fff73eac149eea137f10c10a0d9b96 100644
+--- a/tools/grit/grit/format/minifier.py
++++ b/tools/grit/grit/format/minifier.py
+@@ -13,6 +13,7 @@ __css_minifier = None
+ js_minifier_ignore_list = [
+     # TODO(crbug.com/339686362): Excluded because Terser throws an error.
+     'gen/chrome/browser/resources/omnibox/tsc/',
++    'gen/brave/web-ui-some_resource/',
+ ]
+
+

patches/ui-webui-resources-tools-bundle_js_excludes.gni.patch

@@ -1,12 +1,12 @@
 diff --git a/ui/webui/resources/tools/bundle_js_excludes.gni b/ui/webui/resources/tools/bundle_js_excludes.gni
-index 544a35127374b54700255f5902e881fc5fb89d7d..31ceaa0ee30563ce5fb74bcad9dd39a8aece9507 100644
+index 544a35127374b54700255f5902e881fc5fb89d7d..08abc21bfdec4ca042158a4513fed32ff179d68e 100644
 --- a/ui/webui/resources/tools/bundle_js_excludes.gni
 +++ b/ui/webui/resources/tools/bundle_js_excludes.gni
 @@ -14,6 +14,7 @@ foreach(excluded_file,
            "resources/js/load_time_data.js",
            "resources/ash/common/load_time_data.m.js",
            "resources/mwc/lit/index.js",
-+          "resources/brave/leo.bundle.js",
++          "resources/brave/leo.bundle.js", "resources/brave/some_resource.bundle.js",
          ]) {
    # Exclude both the chrome://resources form and the scheme-relative form.
    BUNDLE_JS_EXCLUDES += [

ui/webui/resources/BUILD.gn

@@ -29,6 +29,7 @@ group("grdp") {
     ":fonts_grdp",
     ":icons_grdp",
     ":leo_web_components",
+    ":some_resource",
     ":static_grdp",
   ]
   if (include_polymer) {
@@ -101,6 +102,25 @@ transpile_web_ui("leo_web_components") {
   resource_name = "leo"
 }
 
+transpile_web_ui("some_resource") {
+  resource_name = "some_resource"
+  generate_grdp = true
+  resource_path_prefix = "brave"
+
+  entry_points = [ [
+        "some_resource",
+        rebase_path("some_resource/index.js"),
+      ] ]
+
+  rust_packages = [
+    rebase_path("some_resource/rust_package_1/Cargo.toml"),
+    rebase_path("some_resource/rust_package_2/Cargo.toml"),
+  ]
+
+  output_module = true
+  public_asset_path = "chrome://resources/brave/"
+}
+
 # Create a grdp that //ui/webui/resources can include in its main resources GRD
 generate_grd("static_grdp") {
   grd_prefix = "brave_webui"

ui/webui/resources/some_resource/index.js

@@ -0,0 +1,8 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+import { return42 } from 'gen/brave/ui/webui/resources/some_resource/rust_package_1/bundler/pkg'
+import { return24 } from 'gen/brave/ui/webui/resources/some_resource/rust_package_2/bundler/pkg'
+export { return42, return24 }

ui/webui/resources/some_resource/rust_package_1/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_package_1"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wasm-bindgen = "=0.2.100" # Must match the version of brave/tools/crates/wasm_bindgen!

ui/webui/resources/some_resource/rust_package_1/src/lib.rs

@@ -0,0 +1,11 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn return42() -> i32 {
+    return 42;
+}