MMKV library install method

Mmkv.cpp

void install(jsi::Runtime& jsiRuntime) {
    // MMKV.set(key: string, value: string | number | bool)
    auto mmkvSet = jsi::Function::createFromHostFunction(jsiRuntime,
        jsi::PropNameID::forAsci(jsiRuntime, "mmkvSet"),
        2,  // key, value
        [](
            jsi::Runtime& runtime,
            const jsi::Value& thisValue,
            const jsi::Value* arguments,
            size_t count) -> jsi::Value 
        {
            if (!arguments[0].isString()) throw jsi::JSError(runtime, "MMKV::set: First argument ('key') has to be of type string!");
            auto keyName = arguments[0].getString(runtime).utf8(runtime);

            if (arguments[1].isBool()) {
                MMKV::defaultMMKV()->set(arguments[1].getBool(), keyName);
            } else if (arguments[1].isNumber()) {
                MMKV::defaultMMKV()->set(arguments[1].getNumber(), keyName);
            } else if (arguments[1].isString()) {
                auto stringValue = arguments[1].getString(runtime).utf8(runtime);
                MMKV::defaultMMKV()->set(stringValue, keyName);
            } else {
                throw jsi::JSError(runtime, "MMKV::set: 'value' argument is not of type bool, number or string!");
            }
            return jsi::Value::undefined();
        }
    );
    jsiRuntime.global().setProperty(jsiRuntime, "mmkvSet", std::move(mmkvSet));
    // ...
}