Some types can override other types in a union or intersection, making certain constituents redundant.
TypeScript’s set theory of types includes cases where a constituent type might be useless in the parent union or intersection.
Within | unions:
any and unknown override all other union members
never is dropped from unions (except in return type position)
Primitive types like string override their literal types like "hello"
Within & intersections:
any and never override all other intersection members
unknown is dropped from intersections
Literal types like "hello" override their primitive types like string
Some projects choose to occasionally include a redundant type constituent for documentation purposes.
For example, some unions intentionally include a redundant string in unions containing unknown to indicate intent.
You might consider using Flint disable comments and/or configuration file disables for those specific situations instead of completely disabling this rule.
