Funcs break init method

[dansteren]

Given the following canister:

import { bool, Canister, Func, init, nat16 } from 'azle';

const SimpleFunc = Func([bool], nat16, 'query');

export default Canister({
    init: init([SimpleFunc], () => {})
});

When running dfx build,
Then the following canister is generated:

service: (func (bool) -> {

}

Resulting in the following error:

Building canisters...
Executing 'npx azle canister'

Building canister canister

Done in 3.41s

🎉 Built canister canister at .azle/canister/canister.wasm

error: parser error
  ┌─ /src/index.did:1:26
  │
1 │ service: (func (bool) -> {
  │                          ^ Unexpected token
  │
  = Expects "("

Error: Failed while trying to build all canisters.
Caused by: Failed while trying to build all canisters.
  The post-build step failed for canister 'bkyz2-fmaaa-aaaaa-qaaaq-cai' (canister) with an embedded error: Candid file check failed for /src/index.did.: Candid parser error: Unrecognized token `LBrace` found at 25:26
Expected one of "(": Unrecognized token `LBrace` found at 25:26
Expected one of "("

[bdemann]

To clarify the candid we would expect to be generated from this canister is

service: (func (bool)) -> {

}

So we're just missing an extra ) after bool

[bdemann]

The actual problem was that it was dropping everything after the -> because of how the service visitor works, after updating that I think it should work. Or in other words, my previous comment is wrong because we are also missing the return type of that func