1. 코드

const u = new UserController() as any;
const methodNames = 
    Object.getOwnPropertyNames(u.constructor)
    .filter((v) => v !== 'name' && v !== 'length' && v !== 'prototype');
const methods = methodNames.map((v) => u.constructor[v]);

2. 함수화

function getMethodsInClass(classType: ClassType) {
    
    const c = classType as any;
    const methods = 
        Object.getOwnPropertyNames(c)
        .filter((v) => v !== 'name' && v !== 'length' && v !== 'prototype')
        .map((mn) => c[mn]);

    // for(const method of methods) {
    //     // Can Do Something
    // }

    return methods;
}

2-1. 사용 예시

class TestClass
{
    testMethod(){}
}

getMethodsInClass(TestClass);