swc/crates/swc_ecma_parser/tests/tsc/asyncAwaitNestedClasses_es5.ts

// @target: ES5
// @lib: es5,es2015.promise
// @noEmitHelpers: true
// https://github.com/Microsoft/TypeScript/issues/20744
class A {
    static B = class B {
        static func2(): Promise<void> {
            return new Promise((resolve) => { resolve(null); });
        }
        static C = class C {
            static async func() {
                await B.func2();
            }
        }
    }
}

A.B.C.func();