refactor: remove dependency on symbol-observable

Author: alan-agius4

Diff for: eslint.config.mjs

@@ -121,14 +121,6 @@ export default [
       'import/newline-after-import': 'error',
       'import/no-absolute-path': 'error',
       'import/no-duplicates': 'error',
-
-      'import/no-unassigned-import': [
-        'error',
-        {
-          allow: ['symbol-observable'],
-        },
-      ],
-
       'import/order': [
         'error',
         {

Diff for: package.json

@@ -135,7 +135,6 @@
     "semver": "7.7.1",
     "shelljs": "^0.9.0",
     "source-map-support": "0.5.21",
-    "symbol-observable": "4.0.0",
     "tar": "^7.0.0",
     "ts-node": "^10.9.1",
     "tslib": "2.8.1",

Diff for: packages/angular/cli/BUILD.bazel

@@ -69,7 +69,6 @@ ts_project(
         "//:node_modules/@types/yarnpkg__lockfile",
         "//:node_modules/listr2",
         "//:node_modules/semver",
-        "//:node_modules/symbol-observable",
     ],
 )
 

Diff for: packages/angular/cli/lib/init.ts

@@ -6,8 +6,6 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import 'symbol-observable';
-// symbol polyfill must go first
 import { readFile } from 'node:fs/promises';
 import { createRequire } from 'node:module';
 import * as path from 'node:path';

Diff for: packages/angular/cli/package.json

@@ -37,7 +37,6 @@
     "pacote": "20.0.0",
     "resolve": "1.22.10",
     "semver": "7.7.1",
-    "symbol-observable": "4.0.0",
     "yargs": "17.7.2"
   },
   "ng-update": {

Diff for: packages/angular_devkit/architect_cli/package.json

@@ -18,7 +18,6 @@
     "@angular-devkit/core": "workspace:0.0.0-PLACEHOLDER",
     "ansi-colors": "4.1.3",
     "progress": "2.0.3",
-    "symbol-observable": "4.0.0",
     "yargs-parser": "21.1.1"
   },
   "devDependencies": {

Diff for: packages/angular_devkit/schematics_cli/BUILD.bazel

@@ -52,7 +52,6 @@ ts_project(
         "//:node_modules/@types/node",
         "//:node_modules/@types/yargs-parser",
         "//:node_modules/ansi-colors",
-        "//:node_modules/symbol-observable",
         "//:node_modules/yargs-parser",
     ],
 )

Diff for: packages/angular_devkit/schematics_cli/bin/schematics.ts

@@ -7,8 +7,6 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-// symbol polyfill must go first
-import 'symbol-observable';
 import { JsonValue, logging, schema } from '@angular-devkit/core';
 import { ProcessOutput, createConsoleLogger } from '@angular-devkit/core/node';
 import { UnsuccessfulWorkflowExecution } from '@angular-devkit/schematics';

Diff for: packages/angular_devkit/schematics_cli/package.json

@@ -20,7 +20,6 @@
     "@angular-devkit/schematics": "workspace:0.0.0-PLACEHOLDER",
     "@inquirer/prompts": "7.4.0",
     "ansi-colors": "4.1.3",
-    "symbol-observable": "4.0.0",
     "yargs-parser": "21.1.1"
   }
 }