--noImplicitOverride (#39669)

* wip: add types

* wip

* Add cases

* Add some case

* Add more check

* accept baseline

* add abstract abd declare method

* add override in declaration

* accept baseline

* add property override

* Fix decalre modifier

* update baseline

* Add more cases

* make lint happy

* make lint happy

* Update description

* Add codefix

* simplify code

* accept baseline

* Update desc

* Accept baseline

* Add override completions

* filter out implements field in override context

* fix tests

* Add parameter property check

* Accept baseline

* acept baseline

* Add parameter property to declaration code action

* Add quickfix for override parameter property

* fix code style

* Add override with interface tests

* Add more cases about modifier position

* rename flag

* rename flags

* Added tests.

* Accepted baselines.

* Always issue errors for unnecessary 'override' modifiers.

* Accepted baselines.

* Override perf (#4)

* try cache check result

* pre check for override

* Do not issue error if implement abstract

* Add abstract-spec check

* Avoid override dead lock

* Add more case

* Add codefix for new error

* Fix error message

* Add jsdoc override tag (#6)

* Override jsdoc tag (#7)

* accept baseline

* Disallow codefix in js

* update baseline

* Omit override in d.ts

* Add more case in js

* Accept baseline

* fix override js test

* fix crlf

* Revert merge conflict changes

* Accept baseline

* Avoid space

* Fix CR issues

* Accept baseline

* Fix typo and add more check

* Fix error name

Co-authored-by: Daniel Rosenwasser <Daniel.Rosenwasser@microsoft.com>

src/compiler/commandLineParser.ts

@@ -675,6 +675,14 @@ namespace ts {
             category: Diagnostics.Additional_Checks,
             description: Diagnostics.Include_undefined_in_index_signature_results
         },
+        {
+            name: "noImplicitOverride",
+            type: "boolean",
+            affectsSemanticDiagnostics: true,
+            showInSimplifiedHelpView: false,
+            category: Diagnostics.Additional_Checks,
+            description: Diagnostics.Ensure_overriding_members_in_derived_classes_are_marked_with_an_override_modifier
+        },
         {
             name: "noPropertyAccessFromIndexSignature",
             type: "boolean",