build: update to TypeScript 5.9 beta

Updates the repo to the TypeScript 5.9 beta and widens the peer dependency ranges.

Author: crisbeto

package.json

@@ -46,20 +46,20 @@
   },
   "homepage": "https://github.com/angular/angular-cli",
   "devDependencies": {
-    "@angular/animations": "20.2.0-next.0",
+    "@angular/animations": "20.2.0-next.1",
     "@angular/cdk": "20.1.0-rc.0",
-    "@angular/common": "20.2.0-next.0",
-    "@angular/compiler": "20.2.0-next.0",
-    "@angular/compiler-cli": "20.2.0-next.0",
-    "@angular/core": "20.2.0-next.0",
-    "@angular/forms": "20.2.0-next.0",
-    "@angular/localize": "20.2.0-next.0",
+    "@angular/common": "20.2.0-next.1",
+    "@angular/compiler": "20.2.0-next.1",
+    "@angular/compiler-cli": "20.2.0-next.1",
+    "@angular/core": "20.2.0-next.1",
+    "@angular/forms": "20.2.0-next.1",
+    "@angular/localize": "20.2.0-next.1",
     "@angular/material": "20.1.0-rc.0",
     "@angular/ng-dev": "https://github.com/angular/dev-infra-private-ng-dev-builds.git#7cdb4cce7349f791492eee3ac1f84e2a0e243287",
-    "@angular/platform-browser": "20.2.0-next.0",
-    "@angular/platform-server": "20.2.0-next.0",
-    "@angular/router": "20.2.0-next.0",
-    "@angular/service-worker": "20.2.0-next.0",
+    "@angular/platform-browser": "20.2.0-next.1",
+    "@angular/platform-server": "20.2.0-next.1",
+    "@angular/router": "20.2.0-next.1",
+    "@angular/service-worker": "20.2.0-next.1",
     "@bazel/bazelisk": "1.26.0",
     "@bazel/buildifier": "8.2.1",
     "@eslint/compat": "1.3.1",
@@ -140,7 +140,7 @@
     "tar": "^7.0.0",
     "ts-node": "^10.9.1",
     "tslib": "2.8.1",
-    "typescript": "5.8.3",
+    "typescript": "5.9.0-beta",
     "undici": "7.11.0",
     "unenv": "^1.10.0",
     "verdaccio": "6.1.5",
@@ -173,6 +173,6 @@
     }
   },
   "resolutions": {
-    "typescript": "5.8.3"
+    "typescript": "5.9.0-beta"
   }
 }

packages/angular/build/package.json

@@ -73,7 +73,7 @@
     "postcss": "^8.4.0",
     "tailwindcss": "^2.0.0 || ^3.0.0 || ^4.0.0",
     "tslib": "^2.3.0",
-    "typescript": ">=5.8 <5.9",
+    "typescript": ">=5.8 <6.0",
     "vitest": "^3.1.1"
   },
   "peerDependenciesMeta": {

packages/angular_devkit/build_angular/package.json

@@ -87,7 +87,7 @@
     "ng-packagr": "0.0.0-NG-PACKAGR-PEER-DEP",
     "protractor": "^7.0.0",
     "tailwindcss": "^2.0.0 || ^3.0.0 || ^4.0.0",
-    "typescript": ">=5.8 <5.9"
+    "typescript": ">=5.8 <6.0"
   },
   "peerDependenciesMeta": {
     "@angular/core": {

packages/ngtools/webpack/package.json

@@ -22,7 +22,7 @@
   "homepage": "https://github.com/angular/angular-cli/tree/main/packages/ngtools/webpack",
   "peerDependencies": {
     "@angular/compiler-cli": "0.0.0-ANGULAR-FW-PEER-DEP",
-    "typescript": ">=5.8 <5.9",
+    "typescript": ">=5.8 <6.0",
     "webpack": "^5.54.0"
   },
   "devDependencies": {

packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/BUILD.bazel

@@ -1,11 +1,10 @@
 load("//tools:defaults.bzl", "ts_project")
 
-# files fetched on 2025-03-03 from
-# https://github.com/microsoft/TypeScript/releases/tag/v5.8.2
+# files fetched on 2025-07-18
 
-# Commands to download:
-# curl https://raw.githubusercontent.com/microsoft/TypeScript/v5.8.2/lib/typescript.d.ts -o packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.d.ts
-# curl https://raw.githubusercontent.com/microsoft/TypeScript/v5.8.2/lib/typescript.js -o packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.js
+# Commands to update from node_modules:
+# cp node_modules/typescript/lib/typescript.d.ts packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.d.ts
+# cp node_modules/typescript/lib/typescript.js packages/schematics/angular/third_party/github.com/Microsoft/TypeScript/lib/typescript.js
 
 licenses(["notice"])  # Apache 2.0