raw_message object parsing

[dbkynd]

Actual behaviour:
Using the raw_message event, the RAW IRC message:
'@badge-info=;badges=broadcaster/1,premium/1;color=#EC5D0F;display-name=DBKynd;emotes=;flags=;id=91544fb6-4e0a-411f-a379-771aad329f35;mod=0;room-id=59351240;subscriber=0;tmi-sent-ts=1587431682109;turbo=0;user-id=59351240;user-type= :[email protected] PRIVMSG #dbkynd :dirk is great'
gets parsed as

{
  raw: '@badge-info=;badges=broadcaster/1,premium/1;color=#EC5D0F;display-name=DBKynd;emotes=;flags=;id=91544fb6-4e0a-411f-a379-771aad329f35;mod=0;room-id=59351240;subscriber=0;tmi-sent-ts=1587431682109;turbo=0;user-id=59351240;user-type= :[email protected] PRIVMSG #dbkynd :dirk is great',
  tags: {
    'badge-info': true,
    badges: 'broadcaster/1,premium/1',
    color: '#EC5D0F',
    'display-name': 'DBKynd',
    emotes: true,
    flags: true,
    id: '91544fb6-4e0a-411f-a379-771aad329f35',
    mod: '0',
    'room-id': '59351240',
    subscriber: '0',
    'tmi-sent-ts': '1587431682109',
    turbo: '0',
    'user-id': '59351240',
    'user-type': true
  },
  prefix: '[email protected]',
  command: 'PRIVMSG',
  params: [ '#dbkynd', 'dirk is great' ]
}

where emotes=;flags=; turns in to emotes: true, flags: true,
This is both on the message and messageCloned objects (for obvious reasons but thought I'd check both just in case)

This same message captured using the message event parses those fields to null

Expected behaviour:

These fields should be parsed as null similarly to how it is done in the message event

Server configuration

• Operating system: alpine
• Node version (if applicable): v12.15.0
• NPM version (if applicable):
• tmi.js version: "tmi.js": "^1.5.0",

[AlcaDesign]

The IRC parser that tmi.js uses (irc-message by Fionn Kelleher (sigkell)) and many other parsers will parse an empty tag as true.

tmi.js/lib/parser.js

Line 153 in 92d7ccf

message.tags[pair[0]] = tag.substring(tag.indexOf("=") + 1) || true;

I personally wouldn't choose it to be true but at this point I don't want any backwards incompatible changes. Perhaps an option could be added to change an empty tag to something else like null or an empty string (my preference) with true as the default.

RFC.

[dbkynd]

Oh hmm... interesting.
Thanks for the prompt response!
Options are always nice, but if that's a standard I can just deal with it.