Function checkUnusedIdentifiers

test/fixtures/snapshot/typescript.js:81948–81994

(potentiallyUnusedIdentifiers, addDiagnostic)

            }
        }
        function checkUnusedIdentifiers(potentiallyUnusedIdentifiers, addDiagnostic) {
            for (var _i = 0, potentiallyUnusedIdentifiers_1 = potentiallyUnusedIdentifiers; _i < potentiallyUnusedIdentifiers_1.length; _i++) {
                var node = potentiallyUnusedIdentifiers_1[_i];
                switch (node.kind) {
                    case 257 /* SyntaxKind.ClassDeclaration */:
                    case 226 /* SyntaxKind.ClassExpression */:
                        checkUnusedClassMembers(node, addDiagnostic);
                        checkUnusedTypeParameters(node, addDiagnostic);
                        break;
                    case 305 /* SyntaxKind.SourceFile */:
                    case 261 /* SyntaxKind.ModuleDeclaration */:
                    case 235 /* SyntaxKind.Block */:
                    case 263 /* SyntaxKind.CaseBlock */:
                    case 242 /* SyntaxKind.ForStatement */:
                    case 243 /* SyntaxKind.ForInStatement */:
                    case 244 /* SyntaxKind.ForOfStatement */:
                        checkUnusedLocalsAndParameters(node, addDiagnostic);
                        break;
                    case 171 /* SyntaxKind.Constructor */:
                    case 213 /* SyntaxKind.FunctionExpression */:
                    case 256 /* SyntaxKind.FunctionDeclaration */:
                    case 214 /* SyntaxKind.ArrowFunction */:
                    case 169 /* SyntaxKind.MethodDeclaration */:
                    case 172 /* SyntaxKind.GetAccessor */:
                    case 173 /* SyntaxKind.SetAccessor */:
                        if (node.body) { // Don't report unused parameters in overloads
                            checkUnusedLocalsAndParameters(node, addDiagnostic);
                        }
                        checkUnusedTypeParameters(node, addDiagnostic);
                        break;
                    case 168 /* SyntaxKind.MethodSignature */:
                    case 174 /* SyntaxKind.CallSignature */:
                    case 175 /* SyntaxKind.ConstructSignature */:
                    case 179 /* SyntaxKind.FunctionType */:
                    case 180 /* SyntaxKind.ConstructorType */:
                    case 259 /* SyntaxKind.TypeAliasDeclaration */:
                    case 258 /* SyntaxKind.InterfaceDeclaration */:
                        checkUnusedTypeParameters(node, addDiagnostic);
                        break;
                    case 190 /* SyntaxKind.InferType */:
                        checkUnusedInferTypeParameter(node, addDiagnostic);
                        break;
                    default:
                        ts.Debug.assertNever(node, "Node should not have been registered for unused identifiers check");
                }
            }
        }
        function errorUnusedLocal(declaration, name, addDiagnostic) {
            var node = ts.getNameOfDeclaration(declaration) || declaration;
            var message = isTypeDeclaration(declaration) ? ts.Diagnostics._0_is_declared_but_never_used : ts.Diagnostics._0_is_declared_but_its_value_is_never_read;