refactor(@angular-devkit/build-angular): remove support for TypeScript 3.9

alan-agius4 · alan-agius4 · commit bfb33b15e167 · 2020-10-20T08:52:27.000+02:00
BREAKING CHANGE:

TypeScript 3.9 is no longer supported, please upgrade to TypeScript 4.0.
diff --git a/integration/angular_cli/package.json b/integration/angular_cli/package.json
@@ -43,7 +43,7 @@
     "puppeteer": "5.2.1",
     "ts-node": "~8.3.0",
     "tslint": "~6.1.0",
-    "typescript": "~3.9.2"
+    "typescript": "~4.0.0"
   },
   "resolutions": {
     "rxjs": "6.5.4",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
@@ -84,7 +84,7 @@
     "ng-packagr": "^11.0.0 || ^11.0.0-next",
     "protractor": "^7.0.0",
     "tslint": "^6.1.0",
-    "typescript": ">=3.9 < 4.1"
+    "typescript": "~4.0.0"
   },
   "peerDependenciesMeta": {
     "@angular/localize": {
