Update upstream using Rspack

.browserslistrc

@@ -4,13 +4,12 @@
 # - released in the last year + current alpha/beta versions
 # - Firefox extended support release (ESR)
 # - with global utilization at or above 0.5%
-# - must support dynamic import of ES modules
-# - exclude browsers no longer being maintained
+# - exclude dead browsers (no security maintenance for 2+ years)
 # - exclude KaiOS, QQ, and UC browsers due to lack of sufficient feature support data
 unreleased versions
 last 1 year
 Firefox ESR
->= 0.5% and supports es6-module-dynamic-import
+>= 0.5%
 not dead
 not KaiOS > 0
 not QQAndroid > 0
@@ -20,23 +19,18 @@ not UCAndroid > 0
 # Legacy builds are served when modern requirements are not met and support browsers:
 # - released in the last 7 years + current alpha/beta versionss
 # - with global utilization at or above 0.05%
-# The lattermost query ensures that support for popular old browsers is not dropped too early
-# (e.g. IE 11, Android 4.4, or Samsung 4).
-#
-# In addition, legacy browsers must support some minimum features that cannot be polyfilled:
-# - ES5 (strict mode)
-# - web sockets to communicate with backend
-# - inline SVG used widely in buttons, widgets, etc.
-# - custom events used for most user interactions
-# - CSS flexbox used in the majority of the layout
-# Nearly all of these are redundant with the above rules.
-# As of May 2023, only web sockets must be added to the query.
+# - exclude dead browsers (no security maintenance for 2+ years)
+# - exclude Opera Mini which does not support web sockets
 unreleased versions
 last 7 years
->= 0.05% and supports websockets
+>= 0.05%
+not dead
+not op_mini all
 
 [legacy-sw]
 # Same as legacy plus supports service workers
 unreleased versions
 last 7 years
->= 0.05% and supports websockets and supports serviceworkers
+>= 0.05% and supports serviceworkers
+not dead
+not op_mini all

.yarnrc.yml

@@ -6,4 +6,4 @@ enableGlobalCache: false
 
 nodeLinker: node-modules
 
-yarnPath: homeassistant-frontend/.yarn/releases/yarn-4.5.1.cjs
+yarnPath: homeassistant-frontend/.yarn/releases/yarn-4.5.3.cjs

build-scripts/README.md

@@ -15,7 +15,7 @@ The Home Assistant build pipeline contains various steps to prepare a build.
 
 Currently in Home Assistant we use a bundler to convert TypeScript, CSS and JSON files to JavaScript files that the browser understands.
 
-We currently rely on Webpack but also have experimental Rollup support. Both of these programs bundle the converted files in both production and development.
+We currently rely on Webpack. Both of these programs bundle the converted files in both production and development.
 
 For development, bundling is optional. We just want to get the right files in the browser.
 

build-scripts/babel-plugins/custom-polyfill-plugin.js

@@ -1,56 +1,148 @@
 import defineProvider from "@babel/helper-define-polyfill-provider";
+import { join } from "node:path";
+import paths from "../paths.cjs";
+
+const POLYFILL_DIR = join(paths.polymer_dir, "homeassistant-frontend/src/resources/polyfills");
 
 // List of polyfill keys with supported browser targets for the functionality
-const PolyfillSupport = {
-  fetch: {
-    android: 42,
-    chrome: 42,
-    edge: 14,
-    firefox: 39,
+const polyfillSupport = {
+  // Note states and shadowRoot properties should be supported.
+  "element-internals": {
+    android: 90,
+    chrome: 90,
+    edge: 90,
+    firefox: 126,
+    ios: 17.4,
+    opera: 76,
+    opera_mobile: 64,
+    safari: 17.4,
+    samsung: 15.0,
+  },
+  "element-getattributenames": {
+    android: 61,
+    chrome: 61,
+    edge: 18,
+    firefox: 45,
     ios: 10.3,
-    opera: 29,
-    opera_mobile: 29,
+    opera: 48,
+    opera_mobile: 45,
     safari: 10.1,
-    samsung: 4.0,
-  },
-  proxy: {
-    android: 49,
-    chrome: 49,
-    edge: 12,
-    firefox: 18,
-    ios: 10.0,
-    opera: 36,
-    opera_mobile: 36,
-    safari: 10.0,
-    samsung: 5.0,
+    samsung: 8.0,
+  },
+  "element-toggleattribute": {
+    android: 69,
+    chrome: 69,
+    edge: 18,
+    firefox: 63,
+    ios: 12.0,
+    opera: 56,
+    opera_mobile: 48,
+    safari: 12.0,
+    samsung: 10.0,
+  },
+  // FormatJS polyfill detects fix for https://bugs.chromium.org/p/v8/issues/detail?id=10682,
+  // so adjusted to several months after that was marked fixed
+  "intl-getcanonicallocales": {
+    android: 90,
+    chrome: 90,
+    edge: 90,
+    firefox: 48,
+    ios: 10.3,
+    opera: 76,
+    opera_mobile: 64,
+    safari: 10.1,
+    samsung: 15.0,
+  },
+  "intl-locale": {
+    android: 74,
+    chrome: 74,
+    edge: 79,
+    firefox: 75,
+    ios: 14.0,
+    opera: 62,
+    opera_mobile: 53,
+    safari: 14.0,
+    samsung: 11.0,
+  },
+  "intl-other": {
+    // Not specified (i.e. always try polyfill) since compatibility depends on supported locales
+  },
+  "resize-observer": {
+    android: 64,
+    chrome: 64,
+    edge: 79,
+    firefox: 69,
+    ios: 13.4,
+    opera: 51,
+    opera_mobile: 47,
+    safari: 13.1,
+    samsung: 9.0,
   },
 };
 
 // Map of global variables and/or instance and static properties to the
 // corresponding polyfill key and actual module to import
 const polyfillMap = {
   global: {
-    Proxy: { key: "proxy", module: "proxy-polyfill" },
-    fetch: { key: "fetch", module: "unfetch/polyfill" },
+    ResizeObserver: {
+      key: "resize-observer",
+      module: join(POLYFILL_DIR, "resize-observer.ts"),
+    },
+  },
+  instance: {
+    attachInternals: {
+      key: "element-internals",
+      module: "element-internals-polyfill",
+    },
+    ...Object.fromEntries(
+      ["getAttributeNames", "toggleAttribute"].map((prop) => {
+        const key = `element-${prop.toLowerCase()}`;
+        return [prop, { key, module: join(POLYFILL_DIR, `${key}.ts`) }];
+      }),
+    ),
+  },
+  static: {
+    Intl: {
+      getCanonicalLocales: {
+        key: "intl-getcanonicallocales",
+        module: join(POLYFILL_DIR, "intl-polyfill.ts"),
+      },
+      Locale: {
+        key: "intl-locale",
+        module: join(POLYFILL_DIR, "intl-polyfill.ts"),
+      },
+      ...Object.fromEntries(
+        [
+          "DateTimeFormat",
+          "DurationFormat",
+          "DisplayNames",
+          "ListFormat",
+          "NumberFormat",
+          "PluralRules",
+          "RelativeTimeFormat",
+        ].map((obj) => [
+          obj,
+          { key: "intl-other", module: join(POLYFILL_DIR, "intl-polyfill.ts") },
+        ]),
+      ),
+    },
   },
-  instance: {},
-  static: {},
 };
 
 // Create plugin using the same factory as for CoreJS
-export default defineProvider(
-  ({ createMetaResolver, debug, shouldInjectPolyfill }) => {
-    const resolvePolyfill = createMetaResolver(polyfillMap);
-    return {
-      name: "HA Custom",
-      polyfills: PolyfillSupport,
-      usageGlobal(meta, utils) {
-        const polyfill = resolvePolyfill(meta);
-        if (polyfill && shouldInjectPolyfill(polyfill.desc.key)) {
-          debug(polyfill.desc.key);
-          utils.injectGlobalImport(polyfill.desc.module);
-        }
-      },
-    };
-  }
-);
+export default defineProvider(({ createMetaResolver, debug, shouldInjectPolyfill }) => {
+  const resolvePolyfill = createMetaResolver(polyfillMap);
+  return {
+    name: "custom-polyfill",
+    polyfills: polyfillSupport,
+    usageGlobal(meta, utils) {
+      const polyfill = resolvePolyfill(meta);
+      if (polyfill && shouldInjectPolyfill(polyfill.desc.key)) {
+        debug(polyfill.desc.key);
+        utils.injectGlobalImport(polyfill.desc.module);
+        return true;
+      }
+      return false;
+    },
+  };
+});