103 files changed, 106 insertions, 304 deletions

diff --git a/server/helpers/custom-validators/misc.ts b/server/helpers/custom-validators/misc.ts
index c80c86193..17750379d 100644
--- a/server/helpers/custom-validators/misc.ts
+++ b/server/helpers/custom-validators/misc.ts
@@ -136,12 +136,6 @@ function toValueOrNull (value: string) {
   return value
 }
 
-function toArray (value: any) {
-  if (value && isArray(value) === false) return [ value ]
-
-  return value
-}
-
 function toIntArray (value: any) {
   if (!value) return []
   if (isArray(value) === false) return [ validator.toInt(value) ]
@@ -170,7 +164,6 @@ export {
   isBooleanValid,
   toIntOrNull,
   areUUIDsValid,
-  toArray,
   toIntArray,
   isFileValid,
   checkMimetypeRegex
diff --git a/server/middlewares/validators/blocklist.ts b/server/middlewares/validators/blocklist.ts
index 1bae3764a..8ec6cb01d 100644
--- a/server/middlewares/validators/blocklist.ts
+++ b/server/middlewares/validators/blocklist.ts
@@ -1,8 +1,8 @@
 import express from 'express'
 import { body, param, query } from 'express-validator'
 import { areValidActorHandles } from '@server/helpers/custom-validators/activitypub/actor'
-import { toArray } from '@server/helpers/custom-validators/misc'
 import { getServerActor } from '@server/models/application/application'
+import { arrayify } from '@shared/core-utils'
 import { HttpStatusCode } from '../../../shared/models/http/http-error-codes'
 import { isEachUniqueHostValid, isHostValid } from '../../helpers/custom-validators/servers'
 import { WEBSERVER } from '../../initializers/constants'
@@ -121,12 +121,12 @@ const unblockServerByServerValidator = [
 const blocklistStatusValidator = [
   query('hosts')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isEachUniqueHostValid).withMessage('Should have a valid hosts array'),
 
   query('accounts')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(areValidActorHandles).withMessage('Should have a valid accounts array'),
 
   (req: express.Request, res: express.Response, next: express.NextFunction) => {
diff --git a/server/middlewares/validators/logs.ts b/server/middlewares/validators/logs.ts
index 584cb2aaf..2d828bb42 100644
--- a/server/middlewares/validators/logs.ts
+++ b/server/middlewares/validators/logs.ts
@@ -3,6 +3,7 @@ import { body, query } from 'express-validator'
 import { isUrlValid } from '@server/helpers/custom-validators/activitypub/misc'
 import { isStringArray } from '@server/helpers/custom-validators/search'
 import { CONFIG } from '@server/initializers/config'
+import { arrayify } from '@shared/core-utils'
 import { HttpStatusCode } from '@shared/models'
 import {
   isValidClientLogLevel,
@@ -12,7 +13,7 @@ import {
   isValidClientLogUserAgent,
   isValidLogLevel
 } from '../../helpers/custom-validators/logs'
-import { isDateValid, toArray } from '../../helpers/custom-validators/misc'
+import { isDateValid } from '../../helpers/custom-validators/misc'
 import { areValidationErrors } from './shared'
 
 const createClientLogValidator = [
@@ -56,7 +57,7 @@ const getLogsValidator = [
     .custom(isValidLogLevel),
   query('tagsOneOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isStringArray).withMessage('Should have a valid one of tags array'),
   query('endDate')
     .optional()
diff --git a/server/middlewares/validators/user-subscriptions.ts b/server/middlewares/validators/user-subscriptions.ts
index a76628915..d01043c17 100644
--- a/server/middlewares/validators/user-subscriptions.ts
+++ b/server/middlewares/validators/user-subscriptions.ts
@@ -1,8 +1,8 @@
+import { arrayify } from '@shared/core-utils'
 import express from 'express'
 import { body, param, query } from 'express-validator'
 import { HttpStatusCode } from '../../../shared/models/http/http-error-codes'
 import { areValidActorHandles, isValidActorHandle } from '../../helpers/custom-validators/activitypub/actor'
-import { toArray } from '../../helpers/custom-validators/misc'
 import { WEBSERVER } from '../../initializers/constants'
 import { ActorFollowModel } from '../../models/actor/actor-follow'
 import { areValidationErrors } from './shared'
@@ -32,7 +32,7 @@ const userSubscriptionAddValidator = [
 
 const areSubscriptionsExistValidator = [
   query('uris')
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(areValidActorHandles).withMessage('Should have a valid array of URIs'),
 
   (req: express.Request, res: express.Response, next: express.NextFunction) => {
diff --git a/server/middlewares/validators/videos/videos.ts b/server/middlewares/validators/videos/videos.ts
index 3d93bc62f..7fd2b03d1 100644
--- a/server/middlewares/validators/videos/videos.ts
+++ b/server/middlewares/validators/videos/videos.ts
@@ -6,7 +6,7 @@ import { Redis } from '@server/lib/redis'
 import { getServerActor } from '@server/models/application/application'
 import { ExpressPromiseHandler } from '@server/types/express-handler'
 import { MUserAccountId, MVideoFullLight } from '@server/types/models'
-import { getAllPrivacies } from '@shared/core-utils'
+import { arrayify, getAllPrivacies } from '@shared/core-utils'
 import { HttpStatusCode, ServerErrorCode, UserRight, VideoInclude } from '@shared/models'
 import {
   exists,
@@ -14,7 +14,6 @@ import {
   isDateValid,
   isFileValid,
   isIdValid,
-  toArray,
   toBooleanOrNull,
   toIntOrNull,
   toValueOrNull
@@ -419,27 +418,27 @@ function getCommonVideoEditAttributes () {
 const commonVideosFiltersValidator = [
   query('categoryOneOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isNumberArray).withMessage('Should have a valid categoryOneOf array'),
   query('licenceOneOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isNumberArray).withMessage('Should have a valid licenceOneOf array'),
   query('languageOneOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isStringArray).withMessage('Should have a valid languageOneOf array'),
   query('privacyOneOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isNumberArray).withMessage('Should have a valid privacyOneOf array'),
   query('tagsOneOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isStringArray).withMessage('Should have a valid tagsOneOf array'),
   query('tagsAllOf')
     .optional()
-    .customSanitizer(toArray)
+    .customSanitizer(arrayify)
     .custom(isStringArray).withMessage('Should have a valid tagsAllOf array'),
   query('nsfw')
     .optional()
diff --git a/server/tests/api/activitypub/cleaner.ts b/server/tests/api/activitypub/cleaner.ts
index d0a151f5c..eb6779123 100644
--- a/server/tests/api/activitypub/cleaner.ts
+++ b/server/tests/api/activitypub/cleaner.ts
@@ -1,7 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import {
   cleanupTests,
@@ -12,8 +11,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test AP cleaner', function () {
   let servers: PeerTubeServer[] = []
   let videoUUID1: string
diff --git a/server/tests/api/activitypub/client.ts b/server/tests/api/activitypub/client.ts
index b12ffe341..90c89138c 100644
--- a/server/tests/api/activitypub/client.ts
+++ b/server/tests/api/activitypub/client.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { processViewersStats } from '@server/tests/shared'
 import { HttpStatusCode, VideoPlaylistPrivacy, WatchActionObject } from '@shared/models'
 import {
@@ -13,8 +13,6 @@ import {
   setDefaultVideoChannel
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test activitypub', function () {
   let servers: PeerTubeServer[] = []
   let video: { id: number, uuid: string, shortUUID: string }
diff --git a/server/tests/api/activitypub/fetch.ts b/server/tests/api/activitypub/fetch.ts
index cc71e82ea..4edabd1d9 100644
--- a/server/tests/api/activitypub/fetch.ts
+++ b/server/tests/api/activitypub/fetch.ts
@@ -1,7 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   cleanupTests,
   createMultipleServers,
@@ -11,8 +10,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test ActivityPub fetcher', function () {
   let servers: PeerTubeServer[]
 
diff --git a/server/tests/api/activitypub/refresher.ts b/server/tests/api/activitypub/refresher.ts
index bb81d4565..401a09090 100644
--- a/server/tests/api/activitypub/refresher.ts
+++ b/server/tests/api/activitypub/refresher.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { wait } from '@shared/core-utils'
 import { HttpStatusCode, VideoPlaylistPrivacy } from '@shared/models'
 import {
diff --git a/server/tests/api/activitypub/security.ts b/server/tests/api/activitypub/security.ts
index 5e29b744f..423fefb10 100644
--- a/server/tests/api/activitypub/security.ts
+++ b/server/tests/api/activitypub/security.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { buildDigest } from '@server/helpers/peertube-crypto'
 import { HTTP_SIGNATURE } from '@server/initializers/constants'
 import { activityPubContextify } from '@server/lib/activitypub/context'
@@ -10,8 +10,6 @@ import { buildAbsoluteFixturePath, wait } from '@shared/core-utils'
 import { HttpStatusCode } from '@shared/models'
 import { cleanupTests, createMultipleServers, killallServers, PeerTubeServer } from '@shared/server-commands'
 
-const expect = chai.expect
-
 function setKeysOfServer (onServer: PeerTubeServer, ofServer: PeerTubeServer, publicKey: string, privateKey: string) {
   const url = 'http://localhost:' + ofServer.port + '/accounts/peertube'
 
diff --git a/server/tests/api/check-params/abuses.ts b/server/tests/api/check-params/abuses.ts
index 7d8347412..331d3f8f7 100644
--- a/server/tests/api/check-params/abuses.ts
+++ b/server/tests/api/check-params/abuses.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { checkBadCountPagination, checkBadSortPagination, checkBadStartPagination } from '@server/tests/shared'
 import { AbuseCreate, AbuseState, HttpStatusCode } from '@shared/models'
 import {
diff --git a/server/tests/api/check-params/blocklist.ts b/server/tests/api/check-params/blocklist.ts
index 36526d494..f745b9088 100644
--- a/server/tests/api/check-params/blocklist.ts
+++ b/server/tests/api/check-params/blocklist.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { checkBadCountPagination, checkBadSortPagination, checkBadStartPagination } from '@server/tests/shared'
 import { HttpStatusCode } from '@shared/models'
 import {
diff --git a/server/tests/api/check-params/channel-import-videos.ts b/server/tests/api/check-params/channel-import-videos.ts
index 14587c376..0ec5fc2b9 100644
--- a/server/tests/api/check-params/channel-import-videos.ts
+++ b/server/tests/api/check-params/channel-import-videos.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { FIXTURE_URLS } from '@server/tests/shared'
 import { areHttpImportTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode } from '@shared/models'
diff --git a/server/tests/api/check-params/logs.ts b/server/tests/api/check-params/logs.ts
index f9a99796d..2496cee31 100644
--- a/server/tests/api/check-params/logs.ts
+++ b/server/tests/api/check-params/logs.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { expect } from 'chai'
 import { HttpStatusCode } from '@shared/models'
 import { cleanupTests, createSingleServer, makeGetRequest, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
diff --git a/server/tests/api/check-params/plugins.ts b/server/tests/api/check-params/plugins.ts
index c3f15b86e..02f0d010d 100644
--- a/server/tests/api/check-params/plugins.ts
+++ b/server/tests/api/check-params/plugins.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { checkBadCountPagination, checkBadSortPagination, checkBadStartPagination } from '@server/tests/shared'
 import { HttpStatusCode, PeerTubePlugin, PluginType } from '@shared/models'
 import {
diff --git a/server/tests/api/check-params/video-blacklist.ts b/server/tests/api/check-params/video-blacklist.ts
index 0ec3f49d5..4dc84d3f2 100644
--- a/server/tests/api/check-params/video-blacklist.ts
+++ b/server/tests/api/check-params/video-blacklist.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import 'mocha'
 import { expect } from 'chai'
 import { checkBadCountPagination, checkBadSortPagination, checkBadStartPagination } from '@server/tests/shared'
 import { HttpStatusCode, VideoBlacklistType } from '@shared/models'
diff --git a/server/tests/api/check-params/video-comments.ts b/server/tests/api/check-params/video-comments.ts
index ccf36948e..550198844 100644
--- a/server/tests/api/check-params/video-comments.ts
+++ b/server/tests/api/check-params/video-comments.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { checkBadCountPagination, checkBadSortPagination, checkBadStartPagination } from '@server/tests/shared'
 import { HttpStatusCode, VideoCreateResult, VideoPrivacy } from '@shared/models'
 import {
@@ -13,8 +13,6 @@ import {
   setAccessTokensToServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video comments API validator', function () {
   let pathThread: string
   let pathComment: string
diff --git a/server/tests/api/live/live-constraints.ts b/server/tests/api/live/live-constraints.ts
index 876538302..64ef73a2a 100644
--- a/server/tests/api/live/live-constraints.ts
+++ b/server/tests/api/live/live-constraints.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { LiveVideoError, VideoPrivacy } from '@shared/models'
 import {
@@ -18,8 +18,6 @@ import {
 } from '@shared/server-commands'
 import { checkLiveCleanup } from '../../shared'
 
-const expect = chai.expect
-
 describe('Test live constraints', function () {
   let servers: PeerTubeServer[] = []
   let userId: number
diff --git a/server/tests/api/live/live-fast-restream.ts b/server/tests/api/live/live-fast-restream.ts
index d3dae9e98..502959258 100644
--- a/server/tests/api/live/live-fast-restream.ts
+++ b/server/tests/api/live/live-fast-restream.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { HttpStatusCode, LiveVideoCreate, VideoPrivacy } from '@shared/models'
 import {
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Fast restream in live', function () {
   let server: PeerTubeServer
 
diff --git a/server/tests/api/live/live-permanent.ts b/server/tests/api/live/live-permanent.ts
index da392ba84..5d227200e 100644
--- a/server/tests/api/live/live-permanent.ts
+++ b/server/tests/api/live/live-permanent.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { LiveVideoCreate, VideoPrivacy, VideoState } from '@shared/models'
 import {
@@ -15,8 +15,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Permanent live', function () {
   let servers: PeerTubeServer[] = []
   let videoUUID: string
diff --git a/server/tests/api/live/live-rtmps.ts b/server/tests/api/live/live-rtmps.ts
index 46cfef989..dcaee90cf 100644
--- a/server/tests/api/live/live-rtmps.ts
+++ b/server/tests/api/live/live-rtmps.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { buildAbsoluteFixturePath } from '@shared/core-utils'
 import { VideoPrivacy } from '@shared/models'
 import {
@@ -15,8 +15,6 @@ import {
   waitUntilLivePublishedOnAllServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test live RTMPS', function () {
   let server: PeerTubeServer
   let rtmpUrl: string
diff --git a/server/tests/api/live/live-save-replay.ts b/server/tests/api/live/live-save-replay.ts
index 80df93924..7014292d0 100644
--- a/server/tests/api/live/live-save-replay.ts
+++ b/server/tests/api/live/live-save-replay.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { FfmpegCommand } from 'fluent-ffmpeg'
 import { checkLiveCleanup } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
@@ -22,8 +22,6 @@ import {
   waitUntilLiveWaitingOnAllServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Save replay setting', function () {
   let servers: PeerTubeServer[] = []
   let liveVideoUUID: string
diff --git a/server/tests/api/live/live-socket-messages.ts b/server/tests/api/live/live-socket-messages.ts
index 7c2b449ac..62b7a6d22 100644
--- a/server/tests/api/live/live-socket-messages.ts
+++ b/server/tests/api/live/live-socket-messages.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideoPrivacy, VideoState } from '@shared/models'
 import {
@@ -15,8 +15,6 @@ import {
   waitUntilLivePublishedOnAllServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test live socket messages', function () {
   let servers: PeerTubeServer[] = []
 
diff --git a/server/tests/api/live/live.ts b/server/tests/api/live/live.ts
index 8d3bf61a1..48982f4de 100644
--- a/server/tests/api/live/live.ts
+++ b/server/tests/api/live/live.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { basename, join } from 'path'
 import { ffprobePromise, getVideoStream } from '@server/helpers/ffmpeg'
 import { checkLiveSegmentHash, checkResolutionsInMasterPlaylist, getAllFiles, testImage } from '@server/tests/shared'
@@ -32,8 +32,6 @@ import {
   waitUntilLivePublishedOnAllServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test live', function () {
   let servers: PeerTubeServer[] = []
   let commands: LiveCommand[]
diff --git a/server/tests/api/moderation/abuses.ts b/server/tests/api/moderation/abuses.ts
index 1c083a3d1..d9c164c43 100644
--- a/server/tests/api/moderation/abuses.ts
+++ b/server/tests/api/moderation/abuses.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { AbuseMessage, AbusePredefinedReasonsString, AbuseState, AdminAbuse, UserAbuse } from '@shared/models'
 import {
   AbusesCommand,
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test abuses', function () {
   let servers: PeerTubeServer[] = []
   let abuseServer1: AdminAbuse
diff --git a/server/tests/api/moderation/blocklist-notification.ts b/server/tests/api/moderation/blocklist-notification.ts
index d5d0e5178..eb092a1df 100644
--- a/server/tests/api/moderation/blocklist-notification.ts
+++ b/server/tests/api/moderation/blocklist-notification.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { UserNotificationType } from '@shared/models'
 import {
   cleanupTests,
@@ -11,8 +11,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkNotifications (server: PeerTubeServer, token: string, expected: UserNotificationType[]) {
   const { data } = await server.notifications.list({ token, start: 0, count: 10, unread: true })
   expect(data).to.have.lengthOf(expected.length)
diff --git a/server/tests/api/moderation/blocklist.ts b/server/tests/api/moderation/blocklist.ts
index ef2c5d7f3..27592e8c5 100644
--- a/server/tests/api/moderation/blocklist.ts
+++ b/server/tests/api/moderation/blocklist.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { UserNotificationType } from '@shared/models'
 import {
   BlocklistCommand,
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkAllVideos (server: PeerTubeServer, token: string) {
   {
     const { data } = await server.videos.listWithToken({ token })
diff --git a/server/tests/api/moderation/video-blacklist.ts b/server/tests/api/moderation/video-blacklist.ts
index 68823f97a..ad132aa39 100644
--- a/server/tests/api/moderation/video-blacklist.ts
+++ b/server/tests/api/moderation/video-blacklist.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { FIXTURE_URLS } from '@server/tests/shared'
 import { sortObjectComparator } from '@shared/core-utils'
 import { UserAdminFlag, UserRole, VideoBlacklist, VideoBlacklistType } from '@shared/models'
@@ -16,8 +16,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video blacklist', function () {
   let servers: PeerTubeServer[] = []
   let videoId: number
diff --git a/server/tests/api/notifications/comments-notifications.ts b/server/tests/api/notifications/comments-notifications.ts
index 7bbec736b..4214687f8 100644
--- a/server/tests/api/notifications/comments-notifications.ts
+++ b/server/tests/api/notifications/comments-notifications.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   checkCommentMention,
   CheckerBaseParams,
@@ -11,8 +11,6 @@ import {
 import { UserNotification } from '@shared/models'
 import { cleanupTests, PeerTubeServer, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test comments notifications', function () {
   let servers: PeerTubeServer[] = []
   let userToken: string
diff --git a/server/tests/api/notifications/notifications-api.ts b/server/tests/api/notifications/notifications-api.ts
index e5d883538..f194656c9 100644
--- a/server/tests/api/notifications/notifications-api.ts
+++ b/server/tests/api/notifications/notifications-api.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   CheckerBaseParams,
   checkNewVideoFromSubscription,
@@ -11,8 +11,6 @@ import {
 import { UserNotification, UserNotificationSettingValue } from '@shared/models'
 import { cleanupTests, PeerTubeServer, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test notifications API', function () {
   let server: PeerTubeServer
   let userNotifications: UserNotification[] = []
diff --git a/server/tests/api/notifications/user-notifications.ts b/server/tests/api/notifications/user-notifications.ts
index ca5e15738..c05f3330a 100644
--- a/server/tests/api/notifications/user-notifications.ts
+++ b/server/tests/api/notifications/user-notifications.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   CheckerBaseParams,
   checkMyVideoImportIsFinished,
@@ -18,8 +18,6 @@ import { buildUUID } from '@shared/extra-utils'
 import { UserNotification, UserNotificationType, VideoPrivacy, VideoStudioTask } from '@shared/models'
 import { cleanupTests, findExternalSavedVideo, PeerTubeServer, stopFfmpeg, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test user notifications', function () {
   let servers: PeerTubeServer[] = []
   let userAccessToken: string
diff --git a/server/tests/api/object-storage/live.ts b/server/tests/api/object-storage/live.ts
index 94fff8f6b..0958ffe0f 100644
--- a/server/tests/api/object-storage/live.ts
+++ b/server/tests/api/object-storage/live.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { expectStartWith } from '@server/tests/shared'
 import { areObjectStorageTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode, LiveVideoCreate, VideoFile, VideoPrivacy } from '@shared/models'
@@ -21,8 +21,6 @@ import {
   waitUntilLiveWaitingOnAllServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function createLive (server: PeerTubeServer, permanent: boolean) {
   const attributes: LiveVideoCreate = {
     channelId: server.store.channel.id,
diff --git a/server/tests/api/object-storage/video-imports.ts b/server/tests/api/object-storage/video-imports.ts
index 141ead2f7..f688c7018 100644
--- a/server/tests/api/object-storage/video-imports.ts
+++ b/server/tests/api/object-storage/video-imports.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { expectStartWith, FIXTURE_URLS } from '@server/tests/shared'
 import { areObjectStorageTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode, VideoPrivacy } from '@shared/models'
@@ -15,8 +15,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function importVideo (server: PeerTubeServer) {
   const attributes = {
     name: 'import 2',
diff --git a/server/tests/api/object-storage/videos.ts b/server/tests/api/object-storage/videos.ts
index cdb68b962..3e65e1093 100644
--- a/server/tests/api/object-storage/videos.ts
+++ b/server/tests/api/object-storage/videos.ts
@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
 import bytes from 'bytes'
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { stat } from 'fs-extra'
 import { merge } from 'lodash'
 import {
@@ -27,8 +27,6 @@ import {
   webtorrentAdd
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkFiles (options: {
   video: VideoDetails
 
diff --git a/server/tests/api/redundancy/manage-redundancy.ts b/server/tests/api/redundancy/manage-redundancy.ts
index b607900f8..404b65a99 100644
--- a/server/tests/api/redundancy/manage-redundancy.ts
+++ b/server/tests/api/redundancy/manage-redundancy.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   cleanupTests,
   createMultipleServers,
@@ -12,8 +12,6 @@ import {
 } from '@shared/server-commands'
 import { VideoPrivacy, VideoRedundanciesTarget } from '@shared/models'
 
-const expect = chai.expect
-
 describe('Test manage videos redundancy', function () {
   const targets: VideoRedundanciesTarget[] = [ 'my-videos', 'remote-videos' ]
 
diff --git a/server/tests/api/redundancy/redundancy.ts b/server/tests/api/redundancy/redundancy.ts
index cc150e02e..5abed358f 100644
--- a/server/tests/api/redundancy/redundancy.ts
+++ b/server/tests/api/redundancy/redundancy.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { readdir } from 'fs-extra'
 import magnetUtil from 'magnet-uri'
 import { basename, join } from 'path'
@@ -25,8 +25,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 let servers: PeerTubeServer[] = []
 let video1Server2: VideoDetails
 
diff --git a/server/tests/api/search/search-activitypub-video-channels.ts b/server/tests/api/search/search-activitypub-video-channels.ts
index 118be11af..06a206d21 100644
--- a/server/tests/api/search/search-activitypub-video-channels.ts
+++ b/server/tests/api/search/search-activitypub-video-channels.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideoChannel } from '@shared/models'
 import {
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test ActivityPub video channels search', function () {
   let servers: PeerTubeServer[]
   let userServer2Token: string
diff --git a/server/tests/api/search/search-activitypub-video-playlists.ts b/server/tests/api/search/search-activitypub-video-playlists.ts
index 1ba9ce2c4..25b162074 100644
--- a/server/tests/api/search/search-activitypub-video-playlists.ts
+++ b/server/tests/api/search/search-activitypub-video-playlists.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideoPlaylistPrivacy } from '@shared/models'
 import {
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test ActivityPub playlists search', function () {
   let servers: PeerTubeServer[]
   let playlistServer1UUID: string
diff --git a/server/tests/api/search/search-activitypub-videos.ts b/server/tests/api/search/search-activitypub-videos.ts
index b17b92dca..4c7118422 100644
--- a/server/tests/api/search/search-activitypub-videos.ts
+++ b/server/tests/api/search/search-activitypub-videos.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideoPrivacy } from '@shared/models'
 import {
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test ActivityPub videos search', function () {
   let servers: PeerTubeServer[]
   let videoServer1UUID: string
diff --git a/server/tests/api/search/search-channels.ts b/server/tests/api/search/search-channels.ts
index cab8e6292..c6b098a93 100644
--- a/server/tests/api/search/search-channels.ts
+++ b/server/tests/api/search/search-channels.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { VideoChannel } from '@shared/models'
 import {
   cleanupTests,
@@ -13,8 +13,6 @@ import {
   setDefaultChannelAvatar
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test channels search', function () {
   let server: PeerTubeServer
   let remoteServer: PeerTubeServer
diff --git a/server/tests/api/search/search-index.ts b/server/tests/api/search/search-index.ts
index ece6c0475..c61ac441d 100644
--- a/server/tests/api/search/search-index.ts
+++ b/server/tests/api/search/search-index.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   BooleanBothQuery,
   VideoChannelsSearchQuery,
@@ -11,8 +11,6 @@ import {
 } from '@shared/models'
 import { cleanupTests, createSingleServer, PeerTubeServer, SearchCommand, setAccessTokensToServers } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test index search', function () {
   const localVideoName = 'local video' + new Date().toISOString()
 
diff --git a/server/tests/api/search/search-playlists.ts b/server/tests/api/search/search-playlists.ts
index 8d48de641..a357674c2 100644
--- a/server/tests/api/search/search-playlists.ts
+++ b/server/tests/api/search/search-playlists.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { VideoPlaylistPrivacy } from '@shared/models'
 import {
   cleanupTests,
@@ -14,8 +14,6 @@ import {
   setDefaultVideoChannel
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test playlists search', function () {
   let server: PeerTubeServer
   let remoteServer: PeerTubeServer
diff --git a/server/tests/api/search/search-videos.ts b/server/tests/api/search/search-videos.ts
index 5f2da55e2..5e85e3aa7 100644
--- a/server/tests/api/search/search-videos.ts
+++ b/server/tests/api/search/search-videos.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideoPrivacy } from '@shared/models'
 import {
@@ -16,8 +16,6 @@ import {
   stopFfmpeg
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test videos search', function () {
   let server: PeerTubeServer
   let remoteServer: PeerTubeServer
diff --git a/server/tests/api/server/auto-follows.ts b/server/tests/api/server/auto-follows.ts
index 9666e61dd..cdaadb3ad 100644
--- a/server/tests/api/server/auto-follows.ts
+++ b/server/tests/api/server/auto-follows.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { MockInstancesIndex } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import { cleanupTests, createMultipleServers, PeerTubeServer, setAccessTokensToServers, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkFollow (follower: PeerTubeServer, following: PeerTubeServer, exists: boolean) {
   {
     const body = await following.follows.getFollowers({ start: 0, count: 5, sort: '-createdAt' })
diff --git a/server/tests/api/server/bulk.ts b/server/tests/api/server/bulk.ts
index 560dcc76e..05762c7c2 100644
--- a/server/tests/api/server/bulk.ts
+++ b/server/tests/api/server/bulk.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   BulkCommand,
   cleanupTests,
@@ -11,8 +11,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test bulk actions', function () {
   const commentsUser3: { videoId: number, commentId: number }[] = []
 
diff --git a/server/tests/api/server/config-defaults.ts b/server/tests/api/server/config-defaults.ts
index 47ee4746d..4fa37d0e2 100644
--- a/server/tests/api/server/config-defaults.ts
+++ b/server/tests/api/server/config-defaults.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { FIXTURE_URLS } from '@server/tests/shared'
 import { VideoDetails, VideoPrivacy } from '@shared/models'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers, setDefaultVideoChannel } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test config defaults', function () {
   let server: PeerTubeServer
   let channelId: number
diff --git a/server/tests/api/server/config.ts b/server/tests/api/server/config.ts
index 2b2b093a7..b8c99e804 100644
--- a/server/tests/api/server/config.ts
+++ b/server/tests/api/server/config.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { parallelTests } from '@shared/core-utils'
 import { CustomConfig, HttpStatusCode } from '@shared/models'
 import {
@@ -12,8 +12,6 @@ import {
   setAccessTokensToServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 function checkInitialConfig (server: PeerTubeServer, data: CustomConfig) {
   expect(data.instance.name).to.equal('PeerTube')
   expect(data.instance.shortDescription).to.equal(
diff --git a/server/tests/api/server/contact-form.ts b/server/tests/api/server/contact-form.ts
index 3eb6c8548..fcd7f3c4c 100644
--- a/server/tests/api/server/contact-form.ts
+++ b/server/tests/api/server/contact-form.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { MockSmtpServer } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import { HttpStatusCode } from '@shared/models'
@@ -13,8 +13,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test contact form', function () {
   let server: PeerTubeServer
   const emails: object[] = []
diff --git a/server/tests/api/server/email.ts b/server/tests/api/server/email.ts
index 5ac66225f..1826c268a 100644
--- a/server/tests/api/server/email.ts
+++ b/server/tests/api/server/email.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { MockSmtpServer } from '@server/tests/shared'
 import { HttpStatusCode } from '@shared/models'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test emails', function () {
   let server: PeerTubeServer
   let userId: number
diff --git a/server/tests/api/server/follow-constraints.ts b/server/tests/api/server/follow-constraints.ts
index c5c8c8595..5998f58cc 100644
--- a/server/tests/api/server/follow-constraints.ts
+++ b/server/tests/api/server/follow-constraints.ts
@@ -1,11 +1,9 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { cleanupTests, createMultipleServers, doubleFollow, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
 import { HttpStatusCode, PeerTubeProblemDocument, ServerErrorCode } from '@shared/models'
 
-const expect = chai.expect
-
 describe('Test follow constraints', function () {
   let servers: PeerTubeServer[] = []
   let video1UUID: string
diff --git a/server/tests/api/server/follows-moderation.ts b/server/tests/api/server/follows-moderation.ts
index dc189fec5..deeaac85a 100644
--- a/server/tests/api/server/follows-moderation.ts
+++ b/server/tests/api/server/follows-moderation.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { expectStartWith } from '@server/tests/shared'
 import { ActorFollow, FollowState } from '@shared/models'
 import {
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkServer1And2HasFollowers (servers: PeerTubeServer[], state = 'accepted') {
   const fns = [
     servers[0].follows.getFollowings.bind(servers[0].follows),
diff --git a/server/tests/api/server/follows.ts b/server/tests/api/server/follows.ts
index 3ff8c3583..96d39352b 100644
--- a/server/tests/api/server/follows.ts
+++ b/server/tests/api/server/follows.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { completeVideoCheck, dateIsValid, expectAccountFollows, expectChannelsFollows, testCaptionFile } from '@server/tests/shared'
 import { VideoCreateResult, VideoPrivacy } from '@shared/models'
 import { cleanupTests, createMultipleServers, PeerTubeServer, setAccessTokensToServers, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test follows', function () {
   let servers: PeerTubeServer[] = []
 
diff --git a/server/tests/api/server/handle-down.ts b/server/tests/api/server/handle-down.ts
index 78b3f8560..9ace65ddf 100644
--- a/server/tests/api/server/handle-down.ts
+++ b/server/tests/api/server/handle-down.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { completeVideoCheck } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import { HttpStatusCode, JobState, VideoCreateResult, VideoPrivacy } from '@shared/models'
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test handle downs', function () {
   let servers: PeerTubeServer[] = []
   let threadIdServer1: number
diff --git a/server/tests/api/server/homepage.ts b/server/tests/api/server/homepage.ts
index 1867826d6..9c45800f2 100644
--- a/server/tests/api/server/homepage.ts
+++ b/server/tests/api/server/homepage.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { HttpStatusCode } from '@shared/models'
 import {
   cleanupTests,
@@ -13,8 +13,6 @@ import {
   setDefaultChannelAvatar
 } from '../../../../shared/server-commands/index'
 
-const expect = chai.expect
-
 async function getHomepageState (server: PeerTubeServer) {
   const config = await server.config.getConfig()
 
diff --git a/server/tests/api/server/jobs.ts b/server/tests/api/server/jobs.ts
index 8217da19b..211e32b1e 100644
--- a/server/tests/api/server/jobs.ts
+++ b/server/tests/api/server/jobs.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { dateIsValid } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import {
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test jobs', function () {
   let servers: PeerTubeServer[]
 
diff --git a/server/tests/api/server/logs.ts b/server/tests/api/server/logs.ts
index 8e626c9df..3b3314d34 100644
--- a/server/tests/api/server/logs.ts
+++ b/server/tests/api/server/logs.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { HttpStatusCode } from '@shared/models'
 import {
   cleanupTests,
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test logs', function () {
   let server: PeerTubeServer
   let logsCommand: LogsCommand
diff --git a/server/tests/api/server/plugins.ts b/server/tests/api/server/plugins.ts
index fbcf4651e..8ac7023eb 100644
--- a/server/tests/api/server/plugins.ts
+++ b/server/tests/api/server/plugins.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { pathExists, remove } from 'fs-extra'
 import { join } from 'path'
 import { testHelloWorldRegisteredSettings } from '@server/tests/shared'
@@ -16,8 +16,6 @@ import {
   setAccessTokensToServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test plugins', function () {
   let server: PeerTubeServer = null
   let command: PluginsCommand
diff --git a/server/tests/api/server/proxy.ts b/server/tests/api/server/proxy.ts
index 851bed058..a4151ebdd 100644
--- a/server/tests/api/server/proxy.ts
+++ b/server/tests/api/server/proxy.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { expectNotStartWith, expectStartWith, FIXTURE_URLS, MockProxy } from '@server/tests/shared'
 import { areObjectStorageTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode, VideoPrivacy } from '@shared/models'
@@ -15,8 +15,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test proxy', function () {
   let servers: PeerTubeServer[] = []
   let proxy: MockProxy
diff --git a/server/tests/api/server/services.ts b/server/tests/api/server/services.ts
index ed7aca6b6..380308a34 100644
--- a/server/tests/api/server/services.ts
+++ b/server/tests/api/server/services.ts
@@ -1,11 +1,9 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers, setDefaultVideoChannel } from '@shared/server-commands'
 import { Video, VideoPlaylistPrivacy } from '@shared/models'
 
-const expect = chai.expect
-
 describe('Test services', function () {
   let server: PeerTubeServer = null
   let playlistUUID: string
diff --git a/server/tests/api/server/slow-follows.ts b/server/tests/api/server/slow-follows.ts
index 73ac26bf8..a967fa724 100644
--- a/server/tests/api/server/slow-follows.ts
+++ b/server/tests/api/server/slow-follows.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { Job } from '@shared/models'
 import {
   cleanupTests,
@@ -11,8 +11,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test slow follows', function () {
   let servers: PeerTubeServer[] = []
 
diff --git a/server/tests/api/server/stats.ts b/server/tests/api/server/stats.ts
index 6dad22aa1..762fc422d 100644
--- a/server/tests/api/server/stats.ts
+++ b/server/tests/api/server/stats.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { ActivityType, VideoPlaylistPrivacy } from '@shared/models'
 import {
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test stats (excluding redundancy)', function () {
   let servers: PeerTubeServer[] = []
   let channelId
diff --git a/server/tests/api/transcoding/audio-only.ts b/server/tests/api/transcoding/audio-only.ts
index da1d50eb2..1897c6d6d 100644
--- a/server/tests/api/transcoding/audio-only.ts
+++ b/server/tests/api/transcoding/audio-only.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { getAudioStream, getVideoStreamDimensionsInfo } from '@server/helpers/ffmpeg'
 import {
   cleanupTests,
@@ -11,8 +11,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test audio only video transcoding', function () {
   let servers: PeerTubeServer[] = []
   let videoUUID: string
diff --git a/server/tests/api/transcoding/create-transcoding.ts b/server/tests/api/transcoding/create-transcoding.ts
index e1972f275..a50bf7654 100644
--- a/server/tests/api/transcoding/create-transcoding.ts
+++ b/server/tests/api/transcoding/create-transcoding.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { checkResolutionsInMasterPlaylist, expectStartWith } from '@server/tests/shared'
 import { areObjectStorageTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode, VideoDetails } from '@shared/models'
@@ -17,8 +17,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkFilesInObjectStorage (video: VideoDetails) {
   for (const file of video.files) {
     expectStartWith(file.fileUrl, ObjectStorageCommand.getWebTorrentBaseUrl())
diff --git a/server/tests/api/transcoding/hls.ts b/server/tests/api/transcoding/hls.ts
index a7ac97e0a..252422e5d 100644
--- a/server/tests/api/transcoding/hls.ts
+++ b/server/tests/api/transcoding/hls.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { basename, join } from 'path'
 import {
   checkDirectoryIsEmpty,
@@ -25,8 +25,6 @@ import {
 } from '@shared/server-commands'
 import { DEFAULT_AUDIO_RESOLUTION } from '../../../initializers/constants'
 
-const expect = chai.expect
-
 async function checkHlsPlaylist (options: {
   servers: PeerTubeServer[]
   videoUUID: string
diff --git a/server/tests/api/users/user-subscriptions.ts b/server/tests/api/users/user-subscriptions.ts
index c024fa75c..894a49f98 100644
--- a/server/tests/api/users/user-subscriptions.ts
+++ b/server/tests/api/users/user-subscriptions.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { VideoPrivacy } from '@shared/models'
 import {
   cleanupTests,
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test users subscriptions', function () {
   let servers: PeerTubeServer[] = []
   const users: { accessToken: string }[] = []
diff --git a/server/tests/api/users/user-videos.ts b/server/tests/api/users/user-videos.ts
index 87040d2e4..4343c1e49 100644
--- a/server/tests/api/users/user-videos.ts
+++ b/server/tests/api/users/user-videos.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { HttpStatusCode } from '@shared/models'
 import {
   cleanupTests,
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test user videos', function () {
   let server: PeerTubeServer
   let videoId: number
diff --git a/server/tests/api/users/users-multiple-servers.ts b/server/tests/api/users/users-multiple-servers.ts
index d1b9f76f9..62d668d1e 100644
--- a/server/tests/api/users/users-multiple-servers.ts
+++ b/server/tests/api/users/users-multiple-servers.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   checkActorFilesWereRemoved,
   checkTmpIsEmpty,
@@ -19,8 +19,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test users with multiple servers', function () {
   let servers: PeerTubeServer[] = []
 
diff --git a/server/tests/api/users/users-verification.ts b/server/tests/api/users/users-verification.ts
index 3d657f73e..fc082383a 100644
--- a/server/tests/api/users/users-verification.ts
+++ b/server/tests/api/users/users-verification.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { MockSmtpServer } from '@server/tests/shared'
 import { HttpStatusCode } from '@shared/models'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test users account verification', function () {
   let server: PeerTubeServer
   let userId: number
diff --git a/server/tests/api/users/users.ts b/server/tests/api/users/users.ts
index 3fd68cfe6..9e657b387 100644
--- a/server/tests/api/users/users.ts
+++ b/server/tests/api/users/users.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { testImage } from '@server/tests/shared'
 import { AbuseState, HttpStatusCode, OAuth2ErrorCode, UserAdminFlag, UserRole, VideoPlaylistType } from '@shared/models'
 import {
@@ -12,8 +12,6 @@ import {
   setAccessTokensToServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test users', function () {
   let server: PeerTubeServer
   let token: string
diff --git a/server/tests/api/videos/multiple-servers.ts b/server/tests/api/videos/multiple-servers.ts
index 766cc8236..23790ba65 100644
--- a/server/tests/api/videos/multiple-servers.ts
+++ b/server/tests/api/videos/multiple-servers.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import request from 'supertest'
 import {
   checkTmpIsEmpty,
@@ -25,8 +25,6 @@ import {
   webtorrentAdd
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test multiple servers', function () {
   let servers: PeerTubeServer[] = []
   const toRemove = []
diff --git a/server/tests/api/videos/resumable-upload.ts b/server/tests/api/videos/resumable-upload.ts
index 9936d5467..0625828a1 100644
--- a/server/tests/api/videos/resumable-upload.ts
+++ b/server/tests/api/videos/resumable-upload.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { pathExists, readdir, stat } from 'fs-extra'
 import { join } from 'path'
 import { buildAbsoluteFixturePath } from '@shared/core-utils'
@@ -8,8 +8,6 @@ import { sha1 } from '@shared/extra-utils'
 import { HttpStatusCode, VideoPrivacy } from '@shared/models'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers, setDefaultVideoChannel } from '@shared/server-commands'
 
-const expect = chai.expect
-
 // Most classic resumable upload tests are done in other test suites
 
 describe('Test resumable upload', function () {
diff --git a/server/tests/api/videos/single-server.ts b/server/tests/api/videos/single-server.ts
index 574fb523e..da8bde07b 100644
--- a/server/tests/api/videos/single-server.ts
+++ b/server/tests/api/videos/single-server.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { checkVideoFilesWereRemoved, completeVideoCheck, testImage } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import { Video, VideoPrivacy } from '@shared/models'
@@ -14,8 +14,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test a single server', function () {
 
   function runSuite (mode: 'legacy' | 'resumable') {
diff --git a/server/tests/api/videos/video-captions.ts b/server/tests/api/videos/video-captions.ts
index b68e5e6e8..0630c9d3a 100644
--- a/server/tests/api/videos/video-captions.ts
+++ b/server/tests/api/videos/video-captions.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { checkVideoFilesWereRemoved, testCaptionFile } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import {
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video captions', function () {
   const uuidRegex = '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'
 
diff --git a/server/tests/api/videos/video-change-ownership.ts b/server/tests/api/videos/video-change-ownership.ts
index 85bc191b6..e9ef67493 100644
--- a/server/tests/api/videos/video-change-ownership.ts
+++ b/server/tests/api/videos/video-change-ownership.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   ChangeOwnershipCommand,
   cleanupTests,
@@ -14,8 +14,6 @@ import {
 } from '@shared/server-commands'
 import { HttpStatusCode, VideoPrivacy } from '@shared/models'
 
-const expect = chai.expect
-
 describe('Test video change ownership - nominal', function () {
   let servers: PeerTubeServer[] = []
 
diff --git a/server/tests/api/videos/video-channels.ts b/server/tests/api/videos/video-channels.ts
index b7645ea59..86a8a038c 100644
--- a/server/tests/api/videos/video-channels.ts
+++ b/server/tests/api/videos/video-channels.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { basename } from 'path'
 import { ACTOR_IMAGES_SIZE } from '@server/initializers/constants'
 import { testFileExistsOrNot, testImage } from '@server/tests/shared'
@@ -17,8 +17,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function findChannel (server: PeerTubeServer, channelId: number) {
   const body = await server.channels.list({ sort: '-name' })
 
diff --git a/server/tests/api/videos/video-comments.ts b/server/tests/api/videos/video-comments.ts
index 6d74a865f..348b408e8 100644
--- a/server/tests/api/videos/video-comments.ts
+++ b/server/tests/api/videos/video-comments.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { dateIsValid, testImage } from '@server/tests/shared'
 import {
   cleanupTests,
@@ -12,8 +12,6 @@ import {
   setDefaultChannelAvatar
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video comments', function () {
   let server: PeerTubeServer
   let videoId: number
diff --git a/server/tests/api/videos/video-description.ts b/server/tests/api/videos/video-description.ts
index 347325741..a74b78a5f 100644
--- a/server/tests/api/videos/video-description.ts
+++ b/server/tests/api/videos/video-description.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   cleanupTests,
   createMultipleServers,
@@ -10,8 +10,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video description', function () {
   let servers: PeerTubeServer[] = []
   let videoUUID = ''
diff --git a/server/tests/api/videos/video-nsfw.ts b/server/tests/api/videos/video-nsfw.ts
index cfa130043..65e9c8730 100644
--- a/server/tests/api/videos/video-nsfw.ts
+++ b/server/tests/api/videos/video-nsfw.ts
@@ -1,11 +1,9 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
 import { BooleanBothQuery, CustomConfig, ResultList, Video, VideosOverview } from '@shared/models'
 
-const expect = chai.expect
-
 function createOverviewRes (overview: VideosOverview) {
   const videos = overview.categories[0].videos
   return { data: videos, total: videos.length }
diff --git a/server/tests/api/videos/video-playlist-thumbnails.ts b/server/tests/api/videos/video-playlist-thumbnails.ts
index 019f34b6b..356939b93 100644
--- a/server/tests/api/videos/video-playlist-thumbnails.ts
+++ b/server/tests/api/videos/video-playlist-thumbnails.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { testImage } from '@server/tests/shared'
 import { VideoPlaylistPrivacy } from '@shared/models'
 import {
@@ -13,8 +13,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Playlist thumbnail', function () {
   let servers: PeerTubeServer[] = []
 
diff --git a/server/tests/api/videos/video-playlists.ts b/server/tests/api/videos/video-playlists.ts
index dd5f6a3ca..47b8c7b1e 100644
--- a/server/tests/api/videos/video-playlists.ts
+++ b/server/tests/api/videos/video-playlists.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { checkPlaylistFilesWereRemoved, testImage } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import {
@@ -24,8 +24,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function checkPlaylistElementType (
   servers: PeerTubeServer[],
   playlistId: string,
diff --git a/server/tests/api/videos/video-privacy.ts b/server/tests/api/videos/video-privacy.ts
index 711622df9..b18c71c94 100644
--- a/server/tests/api/videos/video-privacy.ts
+++ b/server/tests/api/videos/video-privacy.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { HttpStatusCode, VideoCreateResult, VideoPrivacy } from '@shared/models'
 import { cleanupTests, createSingleServer, doubleFollow, PeerTubeServer, setAccessTokensToServers, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video privacy', function () {
   const servers: PeerTubeServer[] = []
   let anotherUserToken: string
diff --git a/server/tests/api/videos/video-schedule-update.ts b/server/tests/api/videos/video-schedule-update.ts
index 7865b3439..73f1519d9 100644
--- a/server/tests/api/videos/video-schedule-update.ts
+++ b/server/tests/api/videos/video-schedule-update.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideoPrivacy } from '@shared/models'
 import {
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 function in10Seconds () {
   const now = new Date()
   now.setSeconds(now.getSeconds() + 10)
diff --git a/server/tests/api/videos/video-source.ts b/server/tests/api/videos/video-source.ts
index 4c1641ed0..5ecf8316f 100644
--- a/server/tests/api/videos/video-source.ts
+++ b/server/tests/api/videos/video-source.ts
@@ -1,8 +1,6 @@
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video source', () => {
   let server: PeerTubeServer = null
   const fixture = 'video_short.webm'
diff --git a/server/tests/api/videos/videos-history.ts b/server/tests/api/videos/videos-history.ts
index 500744e40..6df26ab7d 100644
--- a/server/tests/api/videos/videos-history.ts
+++ b/server/tests/api/videos/videos-history.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { Video } from '@shared/models'
 import { cleanupTests, createSingleServer, killallServers, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test videos history', function () {
   let server: PeerTubeServer = null
   let video1Id: number
diff --git a/server/tests/api/videos/videos-overview.ts b/server/tests/api/videos/videos-overview.ts
index 5159e8248..c012d47c3 100644
--- a/server/tests/api/videos/videos-overview.ts
+++ b/server/tests/api/videos/videos-overview.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import { VideosOverview } from '@shared/models'
 import { cleanupTests, createSingleServer, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test a videos overview', function () {
   let server: PeerTubeServer = null
 
diff --git a/server/tests/api/views/video-views-counter.ts b/server/tests/api/views/video-views-counter.ts
index 9ade1dc0c..ca33ff9cd 100644
--- a/server/tests/api/views/video-views-counter.ts
+++ b/server/tests/api/views/video-views-counter.ts
@@ -1,13 +1,11 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { FfmpegCommand } from 'fluent-ffmpeg'
 import { prepareViewsServers, prepareViewsVideos, processViewsBuffer } from '@server/tests/shared'
 import { wait } from '@shared/core-utils'
 import { cleanupTests, PeerTubeServer, stopFfmpeg, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video views/viewers counters', function () {
   let servers: PeerTubeServer[]
 
diff --git a/server/tests/api/views/video-views-overall-stats.ts b/server/tests/api/views/video-views-overall-stats.ts
index b21d70c0b..bb00684ef 100644
--- a/server/tests/api/views/video-views-overall-stats.ts
+++ b/server/tests/api/views/video-views-overall-stats.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { FfmpegCommand } from 'fluent-ffmpeg'
 import { prepareViewsServers, prepareViewsVideos, processViewersStats } from '@server/tests/shared'
 import { cleanupTests, PeerTubeServer, stopFfmpeg, waitJobs } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test views overall stats', function () {
   let servers: PeerTubeServer[]
 
diff --git a/server/tests/api/views/video-views-retention-stats.ts b/server/tests/api/views/video-views-retention-stats.ts
index 307d6de07..621b05110 100644
--- a/server/tests/api/views/video-views-retention-stats.ts
+++ b/server/tests/api/views/video-views-retention-stats.ts
@@ -1,11 +1,9 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { prepareViewsServers, prepareViewsVideos, processViewersStats } from '@server/tests/shared'
 import { cleanupTests, PeerTubeServer } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test views retention stats', function () {
   let servers: PeerTubeServer[]
 
diff --git a/server/tests/api/views/video-views-timeserie-stats.ts b/server/tests/api/views/video-views-timeserie-stats.ts
index d6c89a63e..e8cb34ad6 100644
--- a/server/tests/api/views/video-views-timeserie-stats.ts
+++ b/server/tests/api/views/video-views-timeserie-stats.ts
@@ -1,13 +1,11 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { FfmpegCommand } from 'fluent-ffmpeg'
 import { prepareViewsServers, prepareViewsVideos, processViewersStats } from '@server/tests/shared'
 import { VideoStatsTimeserie, VideoStatsTimeserieMetric } from '@shared/models'
 import { cleanupTests, PeerTubeServer, stopFfmpeg } from '@shared/server-commands'
 
-const expect = chai.expect
-
 function buildOneMonthAgo () {
   const monthAgo = new Date()
   monthAgo.setHours(0, 0, 0, 0)
diff --git a/server/tests/api/views/videos-views-cleaner.ts b/server/tests/api/views/videos-views-cleaner.ts
index e28f82668..7c543a74a 100644
--- a/server/tests/api/views/videos-views-cleaner.ts
+++ b/server/tests/api/views/videos-views-cleaner.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { wait } from '@shared/core-utils'
 import {
   cleanupTests,
@@ -12,8 +12,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test video views cleaner', function () {
   let servers: PeerTubeServer[]
 
diff --git a/server/tests/cli/create-import-video-file-job.ts b/server/tests/cli/create-import-video-file-job.ts
index aa24e6996..2cf2dd8f8 100644
--- a/server/tests/cli/create-import-video-file-job.ts
+++ b/server/tests/cli/create-import-video-file-job.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { areObjectStorageTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode, VideoDetails, VideoFile, VideoInclude } from '@shared/models'
 import {
@@ -15,8 +15,6 @@ import {
 } from '@shared/server-commands'
 import { expectStartWith } from '../shared'
 
-const expect = chai.expect
-
 function assertVideoProperties (video: VideoFile, resolution: number, extname: string, size?: number) {
   expect(video).to.have.nested.property('resolution.id', resolution)
   expect(video).to.have.property('torrentUrl').that.includes(`-${resolution}.torrent`)
diff --git a/server/tests/cli/create-transcoding-job.ts b/server/tests/cli/create-transcoding-job.ts
index 48302c9e4..8897d8c23 100644
--- a/server/tests/cli/create-transcoding-job.ts
+++ b/server/tests/cli/create-transcoding-job.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { areObjectStorageTestsDisabled } from '@shared/core-utils'
 import { HttpStatusCode, VideoFile } from '@shared/models'
 import {
@@ -15,8 +15,6 @@ import {
 } from '@shared/server-commands'
 import { checkResolutionsInMasterPlaylist, expectStartWith } from '../shared'
 
-const expect = chai.expect
-
 async function checkFilesInObjectStorage (files: VideoFile[], type: 'webtorrent' | 'playlist') {
   for (const file of files) {
     const shouldStartWith = type === 'webtorrent'
diff --git a/server/tests/cli/print-transcode-command.ts b/server/tests/cli/print-transcode-command.ts
index ab4df46fc..33b6cd27c 100644
--- a/server/tests/cli/print-transcode-command.ts
+++ b/server/tests/cli/print-transcode-command.ts
@@ -1,12 +1,10 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { buildAbsoluteFixturePath } from '@shared/core-utils'
 import { CLICommand } from '@shared/server-commands'
 import { VideoResolution } from '../../../shared/models/videos'
 
-const expect = chai.expect
-
 describe('Test print transcode jobs', function () {
 
   it('Should print the correct command for each resolution', async function () {
diff --git a/server/tests/cli/prune-storage.ts b/server/tests/cli/prune-storage.ts
index 15bfb30f0..a89e17e3c 100644
--- a/server/tests/cli/prune-storage.ts
+++ b/server/tests/cli/prune-storage.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { createFile, readdir } from 'fs-extra'
 import { join } from 'path'
 import { wait } from '@shared/core-utils'
@@ -19,8 +19,6 @@ import {
   waitJobs
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 async function countFiles (server: PeerTubeServer, directory: string) {
   const files = await readdir(server.servers.buildDirectory(directory))
 
diff --git a/server/tests/client.ts b/server/tests/client.ts
index 0cb460327..39ba5fdf6 100644
--- a/server/tests/client.ts
+++ b/server/tests/client.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { omit } from '@shared/core-utils'
 import {
   Account,
@@ -23,8 +23,6 @@ import {
   waitJobs
 } from '../../shared/server-commands'
 
-const expect = chai.expect
-
 function checkIndexTags (html: string, title: string, description: string, css: string, config: ServerConfig) {
   expect(html).to.contain('<title>' + title + '</title>')
   expect(html).to.contain('<meta name="description" content="' + description + '" />')
diff --git a/server/tests/feeds/feeds.ts b/server/tests/feeds/feeds.ts
index 3a4b063bc..607e6a542 100644
--- a/server/tests/feeds/feeds.ts
+++ b/server/tests/feeds/feeds.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { XMLParser, XMLValidator } from 'fast-xml-parser'
 import { HttpStatusCode, VideoPrivacy } from '@shared/models'
 import {
@@ -19,8 +19,6 @@ import {
 chai.use(require('chai-xml'))
 chai.use(require('chai-json-schema'))
 chai.config.includeStack = true
-const expect = chai.expect
-
 describe('Test syndication feeds', () => {
   let servers: PeerTubeServer[] = []
   let serverHLSOnly: PeerTubeServer
diff --git a/server/tests/helpers/comment-model.ts b/server/tests/helpers/comment-model.ts
index e1c563dee..e39cae442 100644
--- a/server/tests/helpers/comment-model.ts
+++ b/server/tests/helpers/comment-model.ts
@@ -1,10 +1,8 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { VideoCommentModel } from '../../models/video/video-comment'
 
-const expect = chai.expect
-
 class CommentMock {
   text: string
 
diff --git a/server/tests/helpers/core-utils.ts b/server/tests/helpers/core-utils.ts
index 4f059d982..de6ba4f82 100644
--- a/server/tests/helpers/core-utils.ts
+++ b/server/tests/helpers/core-utils.ts
@@ -1,14 +1,12 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { snakeCase } from 'lodash'
 import validator from 'validator'
 import { getAverageBitrate, getMaxBitrate } from '@shared/core-utils'
 import { VideoResolution } from '@shared/models'
 import { objectConverter, parseBytes, parseDurationToMs } from '../../helpers/core-utils'
 
-const expect = chai.expect
-
 describe('Parse Bytes', function () {
 
   it('Should pass on valid value', async function () {
diff --git a/server/tests/misc-endpoints.ts b/server/tests/misc-endpoints.ts
index 3f6a26cf9..9e404b549 100644
--- a/server/tests/misc-endpoints.ts
+++ b/server/tests/misc-endpoints.ts
@@ -1,11 +1,9 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { cleanupTests, createSingleServer, makeGetRequest, PeerTubeServer, setAccessTokensToServers } from '@shared/server-commands'
 import { HttpStatusCode, VideoPrivacy } from '@shared/models'
 
-const expect = chai.expect
-
 describe('Test misc endpoints', function () {
   let server: PeerTubeServer
 
diff --git a/server/tests/plugins/filter-hooks.ts b/server/tests/plugins/filter-hooks.ts
index e05de587d..026c7e856 100644
--- a/server/tests/plugins/filter-hooks.ts
+++ b/server/tests/plugins/filter-hooks.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { HttpStatusCode, VideoDetails, VideoImportState, VideoPlaylist, VideoPlaylistPrivacy, VideoPrivacy } from '@shared/models'
 import {
   cleanupTests,
@@ -15,8 +15,6 @@ import {
 } from '@shared/server-commands'
 import { FIXTURE_URLS } from '../shared'
 
-const expect = chai.expect
-
 describe('Test plugin filter hooks', function () {
   let servers: PeerTubeServer[]
   let videoUUID: string
diff --git a/server/tests/plugins/html-injection.ts b/server/tests/plugins/html-injection.ts
index 35d710b30..fe16bf1e6 100644
--- a/server/tests/plugins/html-injection.ts
+++ b/server/tests/plugins/html-injection.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   cleanupTests,
   createSingleServer,
@@ -10,8 +10,6 @@ import {
   setAccessTokensToServers
 } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test plugins HTML injection', function () {
   let server: PeerTubeServer = null
   let command: PluginsCommand
diff --git a/server/tests/plugins/translations.ts b/server/tests/plugins/translations.ts
index a76edaf44..67e4683f8 100644
--- a/server/tests/plugins/translations.ts
+++ b/server/tests/plugins/translations.ts
@@ -1,10 +1,8 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import { cleanupTests, createSingleServer, PeerTubeServer, PluginsCommand, setAccessTokensToServers } from '@shared/server-commands'
 
-const expect = chai.expect
-
 describe('Test plugin translations', function () {
   let server: PeerTubeServer
   let command: PluginsCommand
diff --git a/server/tests/plugins/video-constants.ts b/server/tests/plugins/video-constants.ts
index 27e97d9c0..c388f02d1 100644
--- a/server/tests/plugins/video-constants.ts
+++ b/server/tests/plugins/video-constants.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
 
-import * as chai from 'chai'
+import { expect } from 'chai'
 import {
   cleanupTests,
   createSingleServer,
@@ -11,8 +11,6 @@ import {
 } from '@shared/server-commands'
 import { HttpStatusCode, VideoPlaylistPrivacy } from '@shared/models'
 
-const expect = chai.expect
-
 describe('Test plugin altering video constants', function () {
   let server: PeerTubeServer