refactor: remove workarounds for Safari 14 and 15

Both of these versions are no longer supported by Angular and thus these workers are no longer required.

Author: alan-agius4

packages/angular/build/src/tools/esbuild/utils.ts

@@ -195,7 +195,7 @@ export function getFeatureSupport(
   target: string[],
   nativeAsyncAwait: boolean,
 ): BuildOptions['supported'] {
-  const supported: Record<string, boolean> = {
+  return {
     // Native async/await is not supported with Zone.js. Disabling support here will cause
     // esbuild to downlevel async/await, async generators, and for await...of to a Zone.js supported form.
     'async-await': nativeAsyncAwait,
@@ -205,35 +205,6 @@ export function getFeatureSupport(
     // For more details: https://bugs.chromium.org/p/v8/issues/detail?id=11536
     'object-rest-spread': false,
   };
-
-  // Detect Safari browser versions that have a class field behavior bug
-  // See: https://github.com/angular/angular-cli/issues/24355#issuecomment-1333477033
-  // See: https://github.com/WebKit/WebKit/commit/e8788a34b3d5f5b4edd7ff6450b80936bff396f2
-  let safariClassFieldScopeBug = false;
-  for (const browser of target) {
-    let majorVersion;
-    if (browser.startsWith('ios')) {
-      majorVersion = Number(browser.slice(3, 5));
-    } else if (browser.startsWith('safari')) {
-      majorVersion = Number(browser.slice(6, 8));
-    } else {
-      continue;
-    }
-    // Technically, 14.0 is not broken but rather does not have support. However, the behavior
-    // is identical since it would be set to false by esbuild if present as a target.
-    if (majorVersion === 14 || majorVersion === 15) {
-      safariClassFieldScopeBug = true;
-      break;
-    }
-  }
-  // If class field support cannot be used set to false; otherwise leave undefined to allow
-  // esbuild to use `target` to determine support.
-  if (safariClassFieldScopeBug) {
-    supported['class-field'] = false;
-    supported['class-static-field'] = false;
-  }
-
-  return supported;
 }
 
 const MAX_CONCURRENT_WRITES = 64;

packages/angular_devkit/build_angular/src/tools/babel/presets/application.ts

@@ -23,15 +23,6 @@ import { loadEsmModule } from '../../../utils/load-esm';
  */
 let needsLinking: typeof import('@angular/compiler-cli/linker').needsLinking | undefined;
 
-/**
- * List of browsers which are affected by a WebKit bug where class field
- * initializers might have incorrect variable scopes.
- *
- * See: https://github.com/angular/angular-cli/issues/24355#issuecomment-1333477033
- * See: https://github.com/WebKit/WebKit/commit/e8788a34b3d5f5b4edd7ff6450b80936bff396f2
- */
-let safariClassFieldScopeBugBrowsers: ReadonlySet<string>;
-
 export type DiagnosticReporter = (type: 'error' | 'warning' | 'info', message: string) => void;
 
 /**
@@ -188,37 +179,12 @@ export default function (api: unknown, options: ApplicationPresetOptions) {
   // However, this doesn't effect libraries and hence we use preset-env to downlevel ES features
   // based on the supported browsers in browserslist.
   if (options.supportedBrowsers) {
-    const includePlugins: string[] = [];
-
-    if (safariClassFieldScopeBugBrowsers === undefined) {
-      const browserslist = require('browserslist') as typeof import('browserslist');
-      safariClassFieldScopeBugBrowsers = new Set(
-        browserslist([
-          // Safari <15 is technically not supported via https://angular.dev/reference/versions#browser-support
-          // but we apply the workaround if forcibly selected.
-          'Safari <=15',
-          'iOS <=15',
-        ]),
-      );
-    }
-
-    // If a Safari browser affected by the class field scope bug is selected, we
-    // downlevel class properties by ensuring the class properties Babel plugin
-    // is always included- regardless of the preset-env targets.
-    if (options.supportedBrowsers.some((b) => safariClassFieldScopeBugBrowsers.has(b))) {
-      includePlugins.push(
-        '@babel/plugin-proposal-class-properties',
-        '@babel/plugin-proposal-private-methods',
-      );
-    }
-
     presets.push([
       require('@babel/preset-env').default,
       {
         bugfixes: true,
         modules: false,
         targets: options.supportedBrowsers,
-        include: includePlugins,
         exclude: ['transform-typeof-symbol'],
       },
     ]);