user.callFunction returns 'Assertion failed' if called with no args instead of simple error

[sync-by-unito]

Note

I am reporting this issue as I see the following message in the terminal

IMPORTANT: Please report this at https://github.com/realm/realm-core/issues/new

Goals

Call a simple function which requires no args as authenticated user.

Expected Results

{{user.callFunction("some_function_name") }}

should either throw a simple error explaining that callFunction expects both name and args or default args to empty array if none are passed.

Actual Results

./vendor/realm-core/src/realm/object-store/util/bson/bson.hpp:201: [realm-core-10.6.0] Assertion failed: m_type == Bson::Type::Array
0   realm.node                          0x0000000105d8752c _ZN5realm4utilL18terminate_internalERNSt3__118basic_stringstreamIcNS1_11char_traitsIcEENS1_9allocatorIcEEEE + 28
1   realm.node                          0x0000000105d8782b _ZN5realm4util9terminateEPKcS2_lOSt16initializer_listINS0_9PrintableEE + 395
2   realm.node                          0x00000001058cb986 _ZN5realm2js9UserClassINS_4node5TypesEE13call_functionEN4Napi3EnvENS5_6ObjectERNS0_9ArgumentsIS3_EERNS0_11ReturnValueIS3_EE + 1174
3   realm.node                          0x00000001058c6315 _ZN5realm2js4wrapIXadL_ZNS0_9UserClassINS_4node5TypesEE13call_functionEN4Napi3EnvENS6_6ObjectERNS0_9ArgumentsIS4_EERNS0_11ReturnValueIS4_EEEEEENS6_5ValueERKNS6_12CallbackInfoE + 293
4   realm.node                          0x00000001058ce57b _ZZN4Napi12InstanceWrapIN5realm4node13WrappedObjectINS1_2js9UserClassINS2_5TypesEEEEEE29InstanceMethodCallbackWrapperEP10napi_env__P20napi_callback_info__ENKUlvE_clEv + 139
5   realm.node                          0x00000001058ce49a _ZN4Napi12InstanceWrapIN5realm4node13WrappedObjectINS1_2js9UserClassINS2_5TypesEEEEEE29InstanceMethodCallbackWrapperEP10napi_env__P20napi_callback_info__ + 42
6   node                                0x000000010005eefa _ZN6v8impl12_GLOBAL__N_123FunctionCallbackWrapper6InvokeERKN2v820FunctionCallbackInfoINS2_5ValueEEE + 122
7   node                                0x000000010024a488 _ZN2v88internal25FunctionCallbackArguments4CallENS0_15CallHandlerInfoE + 616
8   node                                0x0000000100249a49 _ZN2v88internal12_GLOBAL__N_119HandleApiCallHelperILb0EEENS0_11MaybeHandleINS0_6ObjectEEEPNS0_7IsolateENS0_6HandleINS0_10HeapObjectEEESA_NS8_INS0_20FunctionTemplateInfoEEENS8_IS4_EENS0_16BuiltinArgumentsE + 521
9   node                                0x00000001002491b2 _ZN2v88internalL26Builtin_Impl_HandleApiCallENS0_16BuiltinArgumentsEPNS0_7IsolateE + 258
10  node                                0x00000001009ce9d9 Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_BuiltinExit + 57
11  node                                0x0000000100954284 Builtins_InterpreterEntryTrampoline + 676!!! IMPORTANT: Please report this at https://github.com/realm/realm-core/issues/new/choosesh

Steps to Reproduce

Define a function named 'test_function' like so in the realm UI and in the settings allow an api-key authenticated user to call it via user id authentication.

exports = function() {
  return "HELLO";
};

From node log in a user and try call the function without passing args.

const app = new App({ id: appId });

const credentials = Credentials.serverApiKey(apiKey);

const user = await app.logIn(credentials);

user.callFunction('test_function');

Version of Realm and Tooling

• Realm JS SDK Version: ^10.4.0
• Node: 12.18.2
• Client OS & Version: macOS Mojave 10.14.6