Throw a syntax error for a constructor with type parameters

Makefile

@@ -1,6 +1,6 @@
 FLOW_COMMIT = a1f9a4c709dcebb27a5084acf47755fbae699c25
 TEST262_COMMIT = 058adfed86b1d4129996faaf50a85ea55379a66a
-TYPESCRIPT_COMMIT = ffa35d3272647fe48ddf173e1f0928f772c18630
+TYPESCRIPT_COMMIT = d779a190535e52896cfe5100101173c00b6b8625
 
 FORCE_PUBLISH = "@babel/runtime,@babel/runtime-corejs2,@babel/runtime-corejs3,@babel/standalone"
 

packages/babel-parser/src/plugins/typescript/index.js

@@ -65,6 +65,8 @@ type ParsingContext =
 const TSErrors = Object.freeze({
   ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier",
   ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier",
+  ConstructorHasTypeParameters:
+    "Type parameters cannot appear on a constructor declaration.",
   DeclareClassFieldHasInitializer:
     "'declare' class fields cannot have an initializer",
   DuplicateModifier: "Duplicate modifier: '%0'",
@@ -2291,6 +2293,9 @@ export default (superClass: Class<Parser>): Class<Parser> =>
       allowsDirectSuper: boolean,
     ): void {
       const typeParameters = this.tsTryParseTypeParameters();
+      if (typeParameters && isConstructor) {
+        this.raise(typeParameters.start, TSErrors.ConstructorHasTypeParameters);
+      }
       if (typeParameters) method.typeParameters = typeParameters;
       super.pushClassMethod(
         classBody,

packages/babel-parser/test/fixtures/typescript/class/constructor-with-type-parameters/input.ts

@@ -0,0 +1,3 @@
+class C {
+  constructor<T>(foo: T) {}
+}

packages/babel-parser/test/fixtures/typescript/class/constructor-with-type-parameters/output.json

@@ -0,0 +1,84 @@
+{
+  "type": "File",
+  "start":0,"end":39,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":1}},
+  "errors": [
+    "SyntaxError: Type parameters cannot appear on a constructor declaration. (2:13)"
+  ],
+  "program": {
+    "type": "Program",
+    "start":0,"end":39,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":1}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ClassDeclaration",
+        "start":0,"end":39,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":1}},
+        "id": {
+          "type": "Identifier",
+          "start":6,"end":7,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":7},"identifierName":"C"},
+          "name": "C"
+        },
+        "superClass": null,
+        "body": {
+          "type": "ClassBody",
+          "start":8,"end":39,"loc":{"start":{"line":1,"column":8},"end":{"line":3,"column":1}},
+          "body": [
+            {
+              "type": "ClassMethod",
+              "start":12,"end":37,"loc":{"start":{"line":2,"column":2},"end":{"line":2,"column":27}},
+              "static": false,
+              "key": {
+                "type": "Identifier",
+                "start":12,"end":23,"loc":{"start":{"line":2,"column":2},"end":{"line":2,"column":13},"identifierName":"constructor"},
+                "name": "constructor"
+              },
+              "computed": false,
+              "kind": "constructor",
+              "typeParameters": {
+                "type": "TSTypeParameterDeclaration",
+                "start":23,"end":26,"loc":{"start":{"line":2,"column":13},"end":{"line":2,"column":16}},
+                "params": [
+                  {
+                    "type": "TSTypeParameter",
+                    "start":24,"end":25,"loc":{"start":{"line":2,"column":14},"end":{"line":2,"column":15}},
+                    "name": "T"
+                  }
+                ]
+              },
+              "id": null,
+              "generator": false,
+              "async": false,
+              "params": [
+                {
+                  "type": "Identifier",
+                  "start":27,"end":33,"loc":{"start":{"line":2,"column":17},"end":{"line":2,"column":23},"identifierName":"foo"},
+                  "name": "foo",
+                  "typeAnnotation": {
+                    "type": "TSTypeAnnotation",
+                    "start":30,"end":33,"loc":{"start":{"line":2,"column":20},"end":{"line":2,"column":23}},
+                    "typeAnnotation": {
+                      "type": "TSTypeReference",
+                      "start":32,"end":33,"loc":{"start":{"line":2,"column":22},"end":{"line":2,"column":23}},
+                      "typeName": {
+                        "type": "Identifier",
+                        "start":32,"end":33,"loc":{"start":{"line":2,"column":22},"end":{"line":2,"column":23},"identifierName":"T"},
+                        "name": "T"
+                      }
+                    }
+                  }
+                }
+              ],
+              "body": {
+                "type": "BlockStatement",
+                "start":35,"end":37,"loc":{"start":{"line":2,"column":25},"end":{"line":2,"column":27}},
+                "body": [],
+                "directives": []
+              }
+            }
+          ]
+        }
+      }
+    ],
+    "directives": []
+  }
+}

scripts/parser-tests/typescript/allowlist.txt

@@ -50,6 +50,7 @@ augmentedTypesVar.ts
 bigintIndex.ts
 binderBinaryExpressionStress.ts
 binderBinaryExpressionStressJs.ts
+bundledDtsLateExportRenaming.ts
 cacheResolutions.ts
 cachedModuleResolution1.ts
 cachedModuleResolution2.ts
@@ -79,6 +80,7 @@ constDeclarations-validContexts.ts
 constEnumNoEmitReexport.ts
 constEnumNoPreserveDeclarationReexport.ts
 constEnumPreserveEmitReexport.ts
+controlFlowPrivateClassField.ts
 convertKeywordsYes.ts
 declarationEmitAmdModuleNameDirective.ts
 declarationEmitComputedNameCausesImportToBePainted.ts
@@ -93,6 +95,7 @@ declarationEmitExpandoPropertyPrivateName.ts
 declarationEmitExportAssignedNamespaceNoTripleSlashTypesReference.ts
 declarationEmitExportAssignment.ts
 declarationEmitExportDeclaration.ts
+declarationEmitExpressionInExtends6.ts
 declarationEmitForModuleImportingModuleAugmentationRetainsImport.ts
 declarationEmitForTypesWhichNeedImportTypes.ts
 declarationEmitInterfaceWithNonEntityNameExpressionHeritage.ts
@@ -180,6 +183,7 @@ esModuleInterop.ts
 esModuleInteropImportTSLibHasImport.ts
 esModuleInteropNamedDefaultImports.ts
 esModuleInteropTslibHelpers.ts
+expandoFunctionContextualTypesNoValue.ts
 exportAssignClassAndModule.ts
 exportAssignmentImportMergeNoCrash.ts
 exportAssignmentMembersVisibleInAugmentation.ts
@@ -229,6 +233,7 @@ importDeclWithClassModifiers.ts
 importDeclWithDeclareModifierInAmbientContext.ts
 importHelpers.ts
 importHelpersAmd.ts
+importHelpersES6.ts
 importHelpersInAmbientContext.ts
 importHelpersInIsolatedModules.ts
 importHelpersInTsx.tsx
@@ -273,6 +278,7 @@ jsdocAccessEnumType.ts
 jsdocPropertyTagInvalid.ts
 jsxAttributeWithoutExpressionReact.tsx
 jsxIntrinsicElementsExtendsRecord.tsx
+jsxIntrinsicElementsTypeArgumentErrors.tsx
 letAndVarRedeclaration.ts
 letAsIdentifier.ts
 letAsIdentifierInStrictMode.ts
@@ -352,6 +358,7 @@ outModuleTripleSlashRefs.ts
 parameterInitializerBeforeDestructuringEmit.ts
 parameterPropertyOutsideConstructor.ts
 parseGenericArrowRatherThanLeftShift.ts
+parserConstructorDeclaration12.ts
 pathMappingBasedModuleResolution3_classic.ts
 pathMappingBasedModuleResolution3_node.ts
 preserveUnusedImports.ts
@@ -405,6 +412,7 @@ typeReferenceDirectives5.ts
 typeReferenceDirectives7.ts
 typeReferenceDirectives8.ts
 typeReferenceDirectives9.ts
+uniqueSymbolPropertyDeclarationEmit.ts
 unusedImports1.ts
 unusedImports11.ts
 unusedImports12.ts