ERROR_UNKNOWN about protoc-gen-twirp_swagger

[damianoneill]

$ find . -type f -name "*" | xargs grep ERROR_UNKNOWN
./clients/javascript/package.json:  "description": "ERROR_UNKNOWN",
./clients/javascript/src/index.js:   * ERROR_UNKNOWN.<br>

$ grep -B 5 -A 5 'ERROR_UNKNOWN' ./clients/javascript/package.json
{
  "name": "serviceproto",
  "version": "version not set",
  "description": "ERROR_UNKNOWN",
  "license": "Unlicense",
  "main": "src/index.js",
  "scripts": {
    "test": "mocha --recursive"
  },

$ grep -B 4 -A 5 'ERROR_UNKNOWN' ./clients/javascript/src/index.js
}(function(ApiClient, ExampleHat, ExampleSize, HaberdasherApi) {
  'use strict';

  /**
   * ERROR_UNKNOWN.<br>
   * The <code>index</code> module provides access to constructors for all the classes which comprise the public API.
   * <p>
   * An AMD (recommended!) or CommonJS application will generally do something equivalent to the following:
   * <pre>
   * var Serviceproto = require('index'); // See note below*.