strictNullChecks (#4666)

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src/models/repositories/following.ts

@@ -2,9 +2,50 @@ import { EntityRepository, Repository } from 'typeorm';
 import { Users } from '..';
 import rap from '@prezzemolo/rap';
 import { Following } from '../entities/following';
+import { ensure } from '../../prelude/ensure';
+
+type LocalFollowerFollowing = Following & {
+	followerHost: null;
+	followerInbox: null;
+	followerSharedInbox: null;
+};
+
+type RemoteFollowerFollowing = Following & {
+	followerHost: string;
+	followerInbox: string;
+	followerSharedInbox: string;
+};
+
+type LocalFolloweeFollowing = Following & {
+	followeeHost: null;
+	followeeInbox: null;
+	followeeSharedInbox: null;
+};
+
+type RemoteFolloweeFollowing = Following & {
+	followeeHost: string;
+	followeeInbox: string;
+	followeeSharedInbox: string;
+};
 
 @EntityRepository(Following)
 export class FollowingRepository extends Repository<Following> {
+	public isLocalFollower(following: Following): following is LocalFollowerFollowing {
+		return following.followerHost == null;
+	}
+
+	public isRemoteFollower(following: Following): following is RemoteFollowerFollowing {
+		return following.followerHost != null;
+	}
+
+	public isLocalFollowee(following: Following): following is LocalFolloweeFollowing {
+		return following.followeeHost == null;
+	}
+
+	public isRemoteFollowee(following: Following): following is RemoteFolloweeFollowing {
+		return following.followeeHost != null;
+	}
+
 	public packMany(
 		followings: any[],
 		me?: any,
@@ -24,7 +65,7 @@ export class FollowingRepository extends Repository<Following> {
 			populateFollower?: boolean;
 		}
 	) {
-		const following = typeof src === 'object' ? src : await this.findOne(src);
+		const following = typeof src === 'object' ? src : await this.findOne(src).then(ensure);
 
 		if (opts == null) opts = {};