GramIO API Reference / gramio/dist / Filter

Type Alias: Filter()<In, Out>

Filter<In, Out> = (context) => context is Out

Defined in: gramio/index.d.ts:1334

A type guard predicate that narrows In to Out. Built-in filters use any as In so they work with any bot's context type. The actual narrowing happens via intersection in the .on() handler type.

Type Parameters

Type Parameter	Default type
In	any
Out extends In	In

Parameters

Parameter	Type
context	In

Returns

context is Out