diff --git a/src/core/source/GitHubRepository.ts b/src/core/source/GitHubRepository.ts
index 41d9e52..92512a6 100644
--- a/src/core/source/GitHubRepository.ts
+++ b/src/core/source/GitHubRepository.ts
@@ -66,7 +66,7 @@ export class GitHubRepository {
       const status = (error as { status?: number }).status;
       if (status === 404) {
         // Distinguish: does the repo itself still exist?
-        let repoExists = false;
+        let repoExists: boolean;
         try {
           await oct.repos.get({ owner: this.owner, repo: this.repo });
           repoExists = true;
diff --git a/src/server/routes/admin.ts b/src/server/routes/admin.ts
index 4f353b7..233b56e 100644
--- a/src/server/routes/admin.ts
+++ b/src/server/routes/admin.ts
@@ -5,7 +5,6 @@ import AnonymizedRepositoryModel from "../../core/model/anonymizedRepositories/a
 import ConferenceModel from "../../core/model/conference/conferences.model";
 import UserModel from "../../core/model/users/users.model";
 import { cacheQueue, downloadQueue, removeQueue } from "../../queue";
-import Repository from "../../core/Repository";
 import User from "../../core/User";
 import { ensureAuthenticated } from "./connection";
 import { handleError, getUser, isOwnerOrAdmin, getRepo } from "./route-utils";
diff --git a/src/server/routes/repository-private.ts b/src/server/routes/repository-private.ts
index ab865d9..fa0eb2b 100644
--- a/src/server/routes/repository-private.ts
+++ b/src/server/routes/repository-private.ts
@@ -13,7 +13,6 @@ import { getRepositoryFromGitHub } from "../../core/source/GitHubRepository";
 import gh = require("parse-github-url");
 import AnonymizedRepositoryModel from "../../core/model/anonymizedRepositories/anonymizedRepositories.model";
 import { IAnonymizedRepositoryDocument } from "../../core/model/anonymizedRepositories/anonymizedRepositories.types";
-import Repository from "../../core/Repository";
 import UserModel from "../../core/model/users/users.model";
 import ConferenceModel from "../../core/model/conference/conferences.model";
 import AnonymousError from "../../core/AnonymousError";
@@ -622,7 +621,7 @@ router.post(
       try {
         const r = await oct.users.getByUsername({ username });
         ghUser = r.data;
-      } catch (e) {
+      } catch {
         throw new AnonymousError("github_user_not_found", {
           object: { username },
           httpStatus: 404,
diff --git a/test/lfs-detect.test.js b/test/lfs-detect.test.js
index 3d048f0..631b81a 100644
--- a/test/lfs-detect.test.js
+++ b/test/lfs-detect.test.js
@@ -1,5 +1,4 @@
 const { expect } = require("chai");
-const { Readable } = require("stream");
 
 // Standalone test of the LFS-pointer detection shape used in
 // GitHubStream#resolveLfsPointer. We can't easily import that method (it's