JS: Deprecate type extraction

javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java

@@ -237,7 +237,7 @@ public AutoBuild() {
     this.outputConfig = new ExtractorOutputConfig(LegacyLanguage.JAVASCRIPT);
     this.trapCache = ITrapCache.fromExtractorOptions();
     this.typeScriptMode =
-        getEnumFromEnvVar("LGTM_INDEX_TYPESCRIPT", TypeScriptMode.class, TypeScriptMode.FULL);
+        getEnumFromEnvVar("LGTM_INDEX_TYPESCRIPT", TypeScriptMode.class, TypeScriptMode.BASIC);
     this.defaultEncoding = getEnvVar("LGTM_INDEX_DEFAULT_ENCODING");
     this.installDependencies = Boolean.valueOf(getEnvVar("LGTM_INDEX_TYPESCRIPT_INSTALL_DEPS"));
     this.virtualSourceRoot = makeVirtualSourceRoot();

javascript/extractor/src/com/semmle/js/extractor/ScopeManager.java

@@ -426,15 +426,13 @@ public Void visit(Identifier nd, Void v) {
       // cases where we turn on the 'declKind' flags
       @Override
       public Void visit(FunctionDeclaration nd, Void v) {
-        if (nd.hasDeclareKeyword() && !isInTypeScriptDeclarationFile()) return null;
         // strict mode functions are block-scoped, non-strict mode ones aren't
         if (blockscope == isStrict) visit(nd.getId(), DeclKind.var);
         return null;
       }
 
       @Override
       public Void visit(ClassDeclaration nd, Void c) {
-        if (nd.hasDeclareKeyword() && !isInTypeScriptDeclarationFile()) return null;
         if (blockscope) visit(nd.getClassDef().getId(), DeclKind.varAndType);
         return null;
       }
@@ -483,7 +481,6 @@ public Void visit(EnhancedForStatement nd, Void v) {
 
       @Override
       public Void visit(VariableDeclaration nd, Void v) {
-        if (nd.hasDeclareKeyword() && !isInTypeScriptDeclarationFile()) return null;
         // in block scoping mode, only process 'let'; in non-block scoping
         // mode, only process non-'let'
         if (blockscope == nd.isBlockScoped(ecmaVersion)) visit(nd.getDeclarations());
@@ -518,8 +515,7 @@ public Void visit(ClassBody nd, Void c) {
       @Override
       public Void visit(NamespaceDeclaration nd, Void c) {
         if (blockscope) return null;
-        boolean isAmbientOutsideDtsFile = nd.hasDeclareKeyword() && !isInTypeScriptDeclarationFile();
-        boolean hasVariable = nd.isInstantiated() && !isAmbientOutsideDtsFile;
+        boolean hasVariable = nd.isInstantiated();
         visit(nd.getName(), hasVariable ? DeclKind.varAndNamespace : DeclKind.namespace);
         return null;
       }