Merge pull request #23664 from a-tarasyuk/feature/strictPropertyInitialization-can-not-be-used-without-strictNullChecks

Add warn that user can not use --strictPropertyInitialization without --strictNullChecks

Author: mhegazy

src/compiler/program.ts

@@ -2062,6 +2062,10 @@ namespace ts {
         }
 
         function verifyCompilerOptions() {
+            if (options.strictPropertyInitialization && !options.strictNullChecks) {
+                createDiagnosticForOptionName(Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "strictPropertyInitialization", "strictNullChecks");
+            }
+
             if (options.isolatedModules) {
                 if (options.declaration) {
                     createDiagnosticForOptionName(Diagnostics.Option_0_cannot_be_specified_with_option_1, "declaration", "isolatedModules");

tests/baselines/reference/optionsStrictPropertyInitializationStrictNullChecks.errors.txt

@@ -0,0 +1,7 @@
+error TS5052: Option 'strictPropertyInitialization' cannot be specified without specifying option 'strictNullChecks'.
+
+
+!!! error TS5052: Option 'strictPropertyInitialization' cannot be specified without specifying option 'strictNullChecks'.
+==== tests/cases/compiler/optionsStrictPropertyInitializationStrictNullChecks.ts (0 errors) ====
+    var x;
+    

tests/baselines/reference/optionsStrictPropertyInitializationStrictNullChecks.js

@@ -0,0 +1,6 @@
+//// [optionsStrictPropertyInitializationStrictNullChecks.ts]
+var x;
+
+
+//// [optionsStrictPropertyInitializationStrictNullChecks.js]
+var x;

tests/baselines/reference/optionsStrictPropertyInitializationStrictNullChecks.symbols

@@ -0,0 +1,4 @@
+=== tests/cases/compiler/optionsStrictPropertyInitializationStrictNullChecks.ts ===
+var x;
+>x : Symbol(x, Decl(optionsStrictPropertyInitializationStrictNullChecks.ts, 0, 3))
+

tests/baselines/reference/optionsStrictPropertyInitializationStrictNullChecks.types

@@ -0,0 +1,4 @@
+=== tests/cases/compiler/optionsStrictPropertyInitializationStrictNullChecks.ts ===
+var x;
+>x : any
+

tests/cases/compiler/optionsStrictPropertyInitializationStrictNullChecks.ts

@@ -0,0 +1,3 @@
+// @strictPropertyInitialization: true
+
+var x;