Better error handling

src/remote/activitypub/kernel/accept/follow.ts

@@ -6,7 +6,7 @@ import { Users } from '../../../../models';
 
 export default async (actor: IRemoteUser, activity: IFollow): Promise<void> => {
 	const id = typeof activity.actor == 'string' ? activity.actor : activity.actor.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	if (!id.startsWith(config.url + '/')) {
 		return;

src/remote/activitypub/kernel/block/index.ts

@@ -9,7 +9,7 @@ const logger = apLogger;
 
 export default async (actor: IRemoteUser, activity: IBlock): Promise<void> => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	const uri = activity.id || activity;
 

src/remote/activitypub/kernel/follow.ts

@@ -6,7 +6,7 @@ import { Users } from '../../../models';
 
 export default async (actor: IRemoteUser, activity: IFollow): Promise<void> => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	if (!id.startsWith(config.url + '/')) {
 		return;

src/remote/activitypub/kernel/like.ts

@@ -5,7 +5,7 @@ import { Notes } from '../../../models';
 
 export default async (actor: IRemoteUser, activity: ILike) => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	// Transform:
 	// https://misskey.ex/notes/xxxx to

src/remote/activitypub/kernel/reject/follow.ts

@@ -6,7 +6,7 @@ import { Users } from '../../../../models';
 
 export default async (actor: IRemoteUser, activity: IFollow): Promise<void> => {
 	const id = typeof activity.actor == 'string' ? activity.actor : activity.actor.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	if (!id.startsWith(config.url + '/')) {
 		return;

src/remote/activitypub/kernel/undo/block.ts

@@ -9,7 +9,7 @@ const logger = apLogger;
 
 export default async (actor: IRemoteUser, activity: IBlock): Promise<void> => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	const uri = activity.id || activity;
 

src/remote/activitypub/kernel/undo/follow.ts

@@ -7,7 +7,7 @@ import { Users, FollowRequests, Followings } from '../../../../models';
 
 export default async (actor: IRemoteUser, activity: IFollow): Promise<void> => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	if (!id.startsWith(config.url + '/')) {
 		return;

src/remote/activitypub/kernel/undo/like.ts

@@ -8,13 +8,13 @@ import { Notes } from '../../../../models';
  */
 export default async (actor: IRemoteUser, activity: ILike): Promise<void> => {
 	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
-	if (id == null) throw 'missing id';
+	if (id == null) throw new Error('missing id');
 
 	const noteId = id.split('/').pop();
 
 	const note = await Notes.findOne(noteId);
 	if (note == null) {
-		throw 'note not found';
+		throw new Error('note not found');
 	}
 
 	await deleteReaction(actor, note);

src/remote/activitypub/models/note.ts

@@ -32,7 +32,7 @@ const logger = apLogger;
  */
 export async function fetchNote(value: string | IObject, resolver?: Resolver): Promise<Note | null> {
 	const uri = typeof value == 'string' ? value : value.id;
-	if (uri == null) throw 'missing uri';
+	if (uri == null) throw new Error('missing uri');
 
 	// URIがこのサーバーを指しているならデータベースからフェッチ
 	if (uri.startsWith(config.url + '/')) {
@@ -67,7 +67,7 @@ export async function createNote(value: any, resolver?: Resolver, silent = false
 			value: value,
 			object: object
 		});
-		throw 'invalid note';
+		throw new Error('invalid note');
 	}
 
 	const note: INote = object;
@@ -81,7 +81,7 @@ export async function createNote(value: any, resolver?: Resolver, silent = false
 
 	// 投稿者が凍結されていたらスキップ
 	if (actor.isSuspended) {
-		throw 'actor has been suspended';
+		throw new Error('actor has been suspended');
 	}
 
 	//#region Visibility
@@ -124,7 +124,7 @@ export async function createNote(value: any, resolver?: Resolver, silent = false
 		? await resolveNote(note.inReplyTo, resolver).then(x => {
 			if (x == null) {
 				logger.warn(`Specified inReplyTo, but nout found`);
-				throw 'inReplyTo not found';
+				throw new Error('inReplyTo not found');
 			} else {
 				return x;
 			}
@@ -230,7 +230,7 @@ export async function createNote(value: any, resolver?: Resolver, silent = false
  */
 export async function resolveNote(value: string | IObject, resolver?: Resolver): Promise<Note | null> {
 	const uri = typeof value == 'string' ? value : value.id;
-	if (uri == null) throw 'missing uri';
+	if (uri == null) throw new Error('missing uri');
 
 	// ブロックしてたら中断
 	// TODO: いちいちデータベースにアクセスするのはコスト高そうなのでどっかにキャッシュしておく
@@ -252,7 +252,7 @@ export async function resolveNote(value: string | IObject, resolver?: Resolver):
 		if (e.name === 'duplicated') {
 			return fetchNote(uri).then(note => {
 				if (note == null) {
-					throw 'something happened';
+					throw new Error('something happened');
 				} else {
 					return note;
 				}

src/remote/activitypub/models/person.ts

@@ -88,7 +88,7 @@ function validatePerson(x: any, uri: string) {
  * Misskeyに対象のPersonが登録されていればそれを返します。
  */
 export async function fetchPerson(uri: string, resolver?: Resolver): Promise<User | null> {
-	if (typeof uri !== 'string') throw 'uri is not string';
+	if (typeof uri !== 'string') throw new Error('uri is not string');
 
 	// URIがこのサーバーを指しているならデータベースからフェッチ
 	if (uri.startsWith(config.url + '/')) {
@@ -111,7 +111,7 @@ export async function fetchPerson(uri: string, resolver?: Resolver): Promise<Use
  * Personを作成します。
  */
 export async function createPerson(uri: string, resolver?: Resolver): Promise<User> {
-	if (typeof uri !== 'string') throw 'uri is not string';
+	if (typeof uri !== 'string') throw new Error('uri is not string');
 
 	if (resolver == null) resolver = new Resolver();
 
@@ -256,7 +256,7 @@ export async function createPerson(uri: string, resolver?: Resolver): Promise<Us
  * @param hint Hint of Person object (この値が正当なPersonの場合、Remote resolveをせずに更新に利用します)
  */
 export async function updatePerson(uri: string, resolver?: Resolver | null, hint?: object): Promise<void> {
-	if (typeof uri !== 'string') throw 'uri is not string';
+	if (typeof uri !== 'string') throw new Error('uri is not string');
 
 	// URIがこのサーバーを指しているならスキップ
 	if (uri.startsWith(config.url + '/')) {
@@ -380,7 +380,7 @@ export async function updatePerson(uri: string, resolver?: Resolver | null, hint
  * リモートサーバーからフェッチしてMisskeyに登録しそれを返します。
  */
 export async function resolvePerson(uri: string, resolver?: Resolver): Promise<User> {
-	if (typeof uri !== 'string') throw 'uri is not string';
+	if (typeof uri !== 'string') throw new Error('uri is not string');
 
 	//#region このサーバーに既に登録されていたらそれを返す
 	const exist = await fetchPerson(uri);

src/remote/activitypub/models/question.ts

@@ -11,7 +11,7 @@ export async function extractPollFromQuestion(source: string | IQuestion): Promi
 	const expiresAt = question.endTime ? new Date(question.endTime) : null;
 
 	if (multiple && !question.anyOf) {
-		throw 'invalid question';
+		throw new Error('invalid question');
 	}
 
 	const choices = question[multiple ? 'anyOf' : 'oneOf']!
@@ -37,14 +37,14 @@ export async function updateQuestion(value: any) {
 	const uri = typeof value == 'string' ? value : value.id;
 
 	// URIがこのサーバーを指しているならスキップ
-	if (uri.startsWith(config.url + '/')) throw 'uri points local';
+	if (uri.startsWith(config.url + '/')) throw new Error('uri points local');
 
 	//#region このサーバーに既に登録されているか
 	const note = await Notes.findOne({ uri });
-	if (note == null) throw 'Question is not registed';
+	if (note == null) throw new Error('Question is not registed');
 
 	const poll = await Polls.findOne({ noteId: note.id });
-	if (poll == null) throw 'Question is not registed';
+	if (poll == null) throw new Error('Question is not registed');
 	//#endregion
 
 	// resolve new Question object
@@ -52,7 +52,7 @@ export async function updateQuestion(value: any) {
 	const question = await resolver.resolve(value) as IQuestion;
 	apLogger.debug(`fetched question: ${JSON.stringify(question, null, 2)}`);
 
-	if (question.type !== 'Question') throw 'object is not a Question';
+	if (question.type !== 'Question') throw new Error('object is not a Question');
 
 	const apChoices = question.oneOf || question.anyOf;