Checks for likely outdated messages. A message with a missing source is usually an indication that the message (id) is no longer used in source code, but messages have not been updated accordingly.

Besides installing the lint rule through manage.inlang.com you could also configure it manually.

Type:

type MessageLintRuleLevel = "error" | "warning"

Example in the project.inlang/settings.json:

{
    // other configuration
    "messageLintRuleLevels": {
		"messageLintRule.inlang.messageWithoutSource": "error",
	}
}

The default level is warning