Internals change breaks pre-generated file

[jkrems]

protobuf.js version: protobufjs@6.5.0

The following code has been generated by a previous version (I think 6.4.5):

                        RecordSet.from = function from(source, options) {
                            return this.convert(source, $protobuf.converters.message, options);
                        };

Running with the latest version of protobufjs, I get the following error:

Uncaught TypeError: Cannot read property 'message' of undefined

[jkrems]

Looking at the changelog - should we be pinning to a specific version of the runtime or at least to a specific minor?

[dcodeIO]

Static code is still somewhat in flux due to being an entirely new feature. Hence, compatibility between minor version updates (i.e. 6.4 to 6.5) can't really be guaranteed. In such a case I'd recommend to depend on "protobuf.js": "~6.5.0" (or likewise) for now, which only accepts patch updates, or to take possibly re-generations of the code into account.

In the case of 6.4 to 6.5, converters have been upgraded to first class codegen citizens. While from works pretty much the same as before, it doesn't use a general converter (here: this.convert) anymore but uses specialized methods for each.

[jkrems]

Cool, thanks. We'll investigate moving code generation to startup and for now we'll narrow it down to ~6.5.0.

[dcodeIO]

Also going to think about semver-compatible versioning again with the next breaking change. If you see a protobuf.js v7 in the near future, you'll know.