feat(compiler-cli): add support for TypeScript 4.0 (#38076)

With this change we add support for TypeScript 4.0 PR Close #38076
2020-07-15 12:21:04 +02:00
parent 201a546af8
commit 0fc44e0436
37 changed files with 315 additions and 141 deletions
--- a/packages/elements/src/create-custom-element.ts
+++ b/packages/elements/src/create-custom-element.ts
@ -45,8 +45,7 @@ export abstract class NgElement extends HTMLElement {
  /**
   * The strategy that controls how a component is transformed in a custom element.
   */
-  // TODO(issue/24571): remove '!'.
-  protected ngElementStrategy!: NgElementStrategy;
+  protected abstract ngElementStrategy: NgElementStrategy;
  /**
   * A subscription to change, connect, and disconnect events in the custom element.
   */