tests/cases/compiler/importAsBaseClass_1.ts(2,21): error TS2507: Type 'typeof "tests/cases/compiler/importAsBaseClass_0"' is not a constructor function type. ==== tests/cases/compiler/importAsBaseClass_1.ts (1 errors) ==== import Greeter = require("importAsBaseClass_0"); class Hello extends Greeter { } ~~~~~~~ !!! error TS2507: Type 'typeof "tests/cases/compiler/importAsBaseClass_0"' is not a constructor function type. ==== tests/cases/compiler/importAsBaseClass_0.ts (0 errors) ==== export class Greeter { greet() { return 'greet' } }