`Cannot access '...' before initialization` when a map type is defined in .proto file

[Antonio Orct]

Uncaught ReferenceError: Cannot access 'TestResponse' before initialization
    at Module../src/test.pb.ts (test.pb.ts:84)
    at Module.options.factory (react refresh:6)
    at __webpack_require__ (bootstrap:24)
    at fn (hot module replacement:61)
    at Module../src/App.tsx (logo.svg:34)
    at Module.options.factory (react refresh:6)
    at __webpack_require__ (bootstrap:24)
    at fn (hot module replacement:61)
    at Module../src/index.tsx (App.tsx:30)
    at Module.options.factory (react refresh:6)

I've encountered this error in my React app when i defined a map of any two types in a .proto file.
E.g.

message Foo {
   map<string, int32> Bar = 1;
}

I've created a repo with the error recreated: https://github.com/antonioorct/twirpscript-initialization-error

[Tate Thurston]

Hey @antonioorct I haven't implemented map for TwirpScript but I'm happy to do so -- it's the one data type (other than Group which is not usable in protobuf3) that has yet to be implemented.

I need to look into map backwards compatibility https://developers.google.com/protocol-buffers/docs/proto3#backwards_compatibility for the implementation.

[Tate Thurston]

A little delay here, AFAICT google's protobuf library does not expose the map type. I'll look for a workaround in the meantime.

[Tate Thurston]

@antonioorct I've added support for the map type in v0.0.36.