node_modules/@nestjs/common/interfaces/features/can-activate.interface.d.ts

import { Observable } from 'rxjs';
import { ExecutionContext } from './execution-context.interface';
/**
 * Interface defining the `canActivate()` function that must be implemented
 * by a guard.  Return value indicates whether or not the current request is
 * allowed to proceed.  Return can be either synchronous (`boolean`)
 * or asynchronous (`Promise` or `Observable`).
 *
 * @see [Guards](https://docs.nestjs.com/guards)
 *
 * @publicApi
 */
export interface CanActivate {
    /**
     * @param context Current execution context. Provides access to details about
     * the current request pipeline.
     *
     * @returns Value indicating whether or not the current request is allowed to
     * proceed.
     */
    canActivate(context: ExecutionContext): boolean | Promise<boolean> | Observable<boolean>;
}