This rule effects failures if first
is used in an effect or epic in a manner that will complete the outermost observable.
This rule accepts a single option which is an object with an observable
property that is a regular expression used to match an effect or epic's actions observable. The default observable
regular expression should match most effect and epic action sources.
{
"rxjs/no-unsafe-first": [
"error",
{ "observable": "[Aa]ction(s|s\\$|\\$)$" }
]
}