meta: enforce `no-unused-vars` linter rule (#3118)

* meta: enforce `no-unused-vars` linter rule

* meta: fix `@typescript-eslint/no-unused-vars` linter warnings

* meta: enforce `no-unused-expressions` lint rule

* @uppy/companion: fix `tsc` build

.eslintrc.js

@@ -64,6 +64,8 @@ module.exports = {
     'no-restricted-properties': 'error',
     'no-return-assign': 'error',
     'no-underscore-dangle': 'error',
+    'no-unused-expressions': 'error',
+    'no-unused-vars': 'error',
     'no-useless-concat': 'error',
     'no-var': 'error',
     'node/handle-callback-err': 'error',
@@ -83,8 +85,6 @@ module.exports = {
     'no-param-reassign': ['warn'],
     'no-redeclare': ['warn'],
     'no-shadow': ['warn'],
-    'no-unused-expressions': ['warn'],
-    'no-unused-vars': ['warn'],
     'no-use-before-define': ['warn'],
     'radix': ['warn'],
     'react/button-has-type': 'error',

examples/aws-presigned-url/serve.js

@@ -19,7 +19,7 @@ b.plugin(watchify)
 b.transform(babelify)
 
 function bundle () {
-  return b.bundle((err, data) => {
+  return b.bundle((err) => {
     if (err) console.error(err.stack)
     else console.log('bundle complete')
   }).pipe(createWriteStream(path.join(__dirname, './bundle.js')))

examples/custom-provider/server/customprovider.js

@@ -32,7 +32,7 @@ function adaptData (res) {
  * an example of a custom provider module. It implements @uppy/companion's Provider interface
  */
 class MyCustomProvider {
-  constructor (options) {
+  constructor () {
     this.authProvider = 'myunsplash'
   }
 

examples/custom-provider/server/index.js

@@ -70,12 +70,12 @@ const uppyOptions = {
 app.use(uppy.app(uppyOptions))
 
 // handle 404
-app.use((req, res, next) => {
+app.use((req, res) => {
   return res.status(404).json({ message: 'Not Found' })
 })
 
 // handle server errors
-app.use((err, req, res, next) => {
+app.use((err, req, res) => {
   console.error('\x1b[31m', err.stack, '\x1b[0m')
   res.status(err.status || 500).json({ message: err.message, error: err })
 })

examples/react-native-expo/App.js

@@ -56,7 +56,7 @@ export default class App extends React.Component {
         uploadStarted: true,
       })
     })
-    this.uppy.on('upload-success', (file, response) => {
+    this.uppy.on('upload-success', () => {
       // console.log(file.name, response)
     })
     this.uppy.on('complete', (result) => {

examples/react-native-expo/FileList.js

@@ -59,7 +59,7 @@ export default function FileList (props) {
     <View style={styles.container}>
       <FlatList
         data={uppyFilesArray}
-        keyExtractor={(item, index) => item.id}
+        keyExtractor={(item) => item.id}
         numColumns={2}
         renderItem={({ item }) => {
           return (

examples/transloadit-textarea/main.js

@@ -100,7 +100,7 @@ class MarkdownTextarea {
     }))
   }
 
-  uploadFiles (files) {
+  uploadFiles () {
     robodog.upload({
       waitForEncoding: true,
       params: {

examples/uppy-with-companion/server/index.js

@@ -64,12 +64,12 @@ const uppyOptions = {
 app.use(companion.app(uppyOptions))
 
 // handle 404
-app.use((req, res, next) => {
+app.use((req, res) => {
   return res.status(404).json({ message: 'Not Found' })
 })
 
 // handle server errors
-app.use((err, req, res, next) => {
+app.use((err, req, res) => {
   console.error('\x1b[31m', err.stack, '\x1b[0m')
   res.status(err.status || 500).json({ message: err.message, error: err })
 })

packages/@uppy/aws-s3-multipart/src/MultipartUploader.js

@@ -272,7 +272,6 @@ class MultipartUploader {
   }
 
   #uploadPart (index, prePreparedPart) {
-    const body = this.chunks[index]
     this.chunkState[index].busy = true
 
     const valid = typeof prePreparedPart?.url === 'string'
@@ -289,7 +288,7 @@ class MultipartUploader {
     return this.#uploadPartBytes(index, url, headers)
   }
 
-  #onPartProgress (index, sent, total) {
+  #onPartProgress (index, sent) {
     this.chunkState[index].uploaded = ensureInt(sent)
 
     const totalUploaded = this.chunkState.reduce((n, c) => n + c.uploaded, 0)
@@ -341,7 +340,7 @@ class MultipartUploader {
       this.#onPartProgress(index, ev.loaded, ev.total)
     })
 
-    xhr.addEventListener('abort', (ev) => {
+    xhr.addEventListener('abort', () => {
       cleanup()
       this.chunkState[index].busy = false
 

packages/@uppy/aws-s3-multipart/src/index.js

@@ -318,7 +318,7 @@ module.exports = class AwsS3Multipart extends BasePlugin {
       this.uploaderSockets[file.id] = socket
       this.uploaderEvents[file.id] = new EventTracker(this.uppy)
 
-      this.onFileRemove(file.id, (removed) => {
+      this.onFileRemove(file.id, () => {
         queuedRequest.abort()
         socket.send('pause', {})
         this.resetUploaderReferences(file.id, { abort: true })
@@ -450,7 +450,7 @@ module.exports = class AwsS3Multipart extends BasePlugin {
   }
 
   onRetryAll (fileID, cb) {
-    this.uploaderEvents[fileID].on('retry-all', (filesToRetry) => {
+    this.uploaderEvents[fileID].on('retry-all', () => {
       if (!this.uppy.getFile(fileID)) return
       cb()
     })

packages/@uppy/companion/src/server/Uploader.js

@@ -464,7 +464,7 @@ class Uploader {
        * @param {number} bytesUploaded
        * @param {number} bytesTotal
        */
-      onProgress (bytesUploaded, bytesTotal) {
+      onProgress (bytesUploaded, bytesTotal) { // eslint-disable-line no-unused-vars
         uploader.emitIllusiveProgress(bytesUploaded)
       },
       onSuccess () {

packages/@uppy/companion/src/server/controllers/callback.js

@@ -10,7 +10,7 @@ const logger = require('../logger')
  * @param {object} res
  * @param {Function} next
  */
-module.exports = function callback (req, res, next) {
+module.exports = function callback (req, res, next) { // eslint-disable-line no-unused-vars
   const { providerName } = req.params
 
   if (!req.companion.providerTokens) {

packages/@uppy/companion/src/server/controllers/s3.js

@@ -283,7 +283,7 @@ module.exports = function s3 (config) {
       Bucket: config.bucket,
       Key: key,
       UploadId: uploadId,
-    }, (err, data) => {
+    }, (err) => {
       if (err) {
         next(err)
         return

packages/@uppy/companion/src/server/controllers/send-token.js

@@ -42,11 +42,6 @@ module.exports = function sendToken (req, res, next) {
   const { state } = dynamic
   if (state) {
     const origin = oAuthState.getFromState(state, 'origin', req.companion.options.secret)
-    const clientVersion = oAuthState.getFromState(
-      state,
-      'clientVersion',
-      req.companion.options.secret
-    )
     const allowedClients = req.companion.options.clients
     // if no preset clients then allow any client
     if (!allowedClients || hasMatch(origin, allowedClients) || hasMatch((new URL(origin)).host, allowedClients)) {

packages/@uppy/companion/src/server/controllers/thumbnail.js

@@ -11,10 +11,13 @@ function thumbnail (req, res, next) {
 
   provider.thumbnail({ id, token }, (err, response) => {
     if (err) {
-      err.isAuthError ? res.sendStatus(401) : next(err)
-      return
+      if (err.isAuthError) res.sendStatus(401)
+      else next(err)
+    } else if (response) {
+      response.pipe(res)
+    } else {
+      res.sendStatus(404)
     }
-    response ? response.pipe(res) : res.sendStatus(404)
   })
 }
 

packages/@uppy/companion/src/server/jobs.js

@@ -24,7 +24,7 @@ const cleanUpFinishedUploads = (dirPath) => {
     }
 
     logger.info(`found ${files.length} files`, 'jobs.cleanup.files')
-    files.forEach((file, fileIndex) => {
+    files.forEach((file) => {
       // if it does not contain FILE_NAME_PREFIX then it probably wasn't created by companion.
       // this is to avoid deleting unintended files, e.g if a wrong path was accidentally given
       // by a developer.

packages/@uppy/companion/src/server/provider/Provider.js

@@ -6,7 +6,7 @@ class Provider {
    *
    * @param {object} options
    */
-  constructor (options) {
+  constructor (options) { // eslint-disable-line no-unused-vars
     this.needsCookieAuth = false
     return this
   }
@@ -24,7 +24,7 @@ class Provider {
    * @param {object} options
    * @param {Function} cb
    */
-  list (options, cb) {
+  list (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 
@@ -34,7 +34,7 @@ class Provider {
    * @param {object} options
    * @param {Function} cb
    */
-  download (options, cb) {
+  download (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 
@@ -44,7 +44,7 @@ class Provider {
    * @param {object} options
    * @param {Function} cb
    */
-  thumbnail (options, cb) {
+  thumbnail (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 
@@ -54,7 +54,7 @@ class Provider {
    * @param {object} options
    * @param {Function} cb
    */
-  size (options, cb) {
+  size (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 
@@ -64,7 +64,7 @@ class Provider {
    * @param {object} options
    * @param {Function} cb
    */
-  deauthorizationCallback (options, cb) {
+  deauthorizationCallback (options, cb) { // eslint-disable-line no-unused-vars
     // @todo consider doing something like cb(new NotImplementedError()) instead
     throw new Error('method not implemented')
   }

packages/@uppy/companion/src/server/provider/SearchProvider.js

@@ -8,7 +8,7 @@ class SearchProvider {
    * @param {object} options
    * @param {Function} cb
    */
-  list (options, cb) {
+  list (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 
@@ -18,7 +18,7 @@ class SearchProvider {
    * @param {object} options
    * @param {Function} cb
    */
-  download (options, cb) {
+  download (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 
@@ -28,7 +28,7 @@ class SearchProvider {
    * @param {object} options
    * @param {Function} cb
    */
-  size (options, cb) {
+  size (options, cb) { // eslint-disable-line no-unused-vars
     throw new Error('method not implemented')
   }
 }

packages/@uppy/companion/src/server/provider/facebook/index.js

@@ -50,7 +50,11 @@ class Facebook extends Provider {
           return done(err)
         }
         this._getUsername(token, (err, username) => {
-          err ? done(err) : done(null, this.adaptData(body, username, directory, query))
+          if (err) {
+            done(err)
+          } else {
+            done(null, this.adaptData(body, username, directory, query))
+          }
         })
       })
   }

packages/@uppy/companion/src/server/provider/index.js

@@ -171,7 +171,7 @@ module.exports.addProviderOptions = (companionOptions, grantConfig) => {
  * @param {{server: object, providerOptions: object}} options
  * @returns {string} the authProvider for this provider
  */
-const providerNameToAuthName = (name, options) => {
+const providerNameToAuthName = (name, options) => { // eslint-disable-line no-unused-vars
   const providers = exports.getDefaultProviders()
   return (providers[name] || {}).authProvider
 }

packages/@uppy/companion/src/server/provider/instagram/graph/adapter.js

@@ -8,7 +8,7 @@ const MEDIA_TYPES = Object.freeze({
 
 const isVideo = (item) => item.media_type === MEDIA_TYPES.video
 
-exports.isFolder = (_) => {
+exports.isFolder = (item) => { // eslint-disable-line no-unused-vars
   return false
 }
 

packages/@uppy/companion/src/server/provider/instagram/graph/index.js

@@ -51,7 +51,8 @@ class Instagram extends Provider {
           return done(err)
         }
         this._getUsername(token, (err, username) => {
-          err ? done(err) : done(null, this.adaptData(body, username, directory, query))
+          if (err) done(err)
+          else done(null, this.adaptData(body, username, directory, query))
         })
       })
   }

packages/@uppy/companion/src/server/provider/unsplash/adapter.js

@@ -1,6 +1,6 @@
 const querystring = require('querystring')
 
-exports.isFolder = (item) => {
+exports.isFolder = (item) => { // eslint-disable-line no-unused-vars
   return false
 }
 
@@ -19,7 +19,7 @@ exports.getItemName = (item) => {
   }
 }
 
-exports.getMimeType = (item) => {
+exports.getMimeType = (item) => { // eslint-disable-line no-unused-vars
   return 'image/jpeg'
 }
 

packages/@uppy/companion/src/server/provider/zoom/index.js

@@ -158,7 +158,7 @@ class Zoom extends Provider {
     return this.client
       .get(`${BASE_URL}${GET_MEETING_FILES}`)
       .auth(token)
-      .request((err, resp, body) => {
+      .request((err, resp) => {
         if (err || resp.statusCode !== 200) {
           return this._downloadError(resp, done)
         }

packages/@uppy/companion/src/standalone/index.js

@@ -60,12 +60,12 @@ module.exports = function server (inputCompanionOptions = {}) {
   app.use(addRequestId)
   // log server requests.
   app.use(morgan('combined'))
-  morgan.token('url', (req, res) => {
+  morgan.token('url', (req) => {
     const { query, censored } = censorQuery(req.query)
     return censored ? `${req.path}?${qs.stringify(query)}` : req.originalUrl || req.url
   })
 
-  morgan.token('referrer', (req, res) => {
+  morgan.token('referrer', (req) => {
     const ref = req.headers.referer || req.headers.referrer
     if (typeof ref === 'string') {
       let parsed
@@ -188,12 +188,12 @@ module.exports = function server (inputCompanionOptions = {}) {
     })
   }
 
-  app.use((req, res, next) => {
+  app.use((req, res) => {
     return res.status(404).json({ message: 'Not Found' })
   })
 
   // @ts-ignore
-  app.use((err, req, res, next) => {
+  app.use((err, req, res, next) => { // eslint-disable-line no-unused-vars
     const logStackTrace = true
     if (app.get('env') === 'production') {
       // if the error is a URIError from the requested URL we only log the error message

packages/@uppy/companion/test/__tests__/preauth.js

@@ -2,16 +2,16 @@
 
 jest.mock('../../src/server/helpers/jwt', () => {
   return {
-    generateToken: (payload, secret) => {},
-    verifyToken: (token, secret) => {},
-    generateEncryptedToken: (payload, secret) => {
+    generateToken: () => {},
+    verifyToken: () => {},
+    generateEncryptedToken: () => {
       return 'dummy token'
     },
-    verifyEncryptedToken: (token, secret) => {
+    verifyEncryptedToken: () => {
       return { payload: '' }
     },
-    addToCookies: (res, token, companionOptions, authProvider) => {},
-    removeFromCookies: (res, companionOptions, authProvider) => {},
+    addToCookies: () => {},
+    removeFromCookies: () => {},
   }
 })
 

packages/@uppy/companion/test/__tests__/url.js

@@ -3,7 +3,7 @@
 jest.mock('tus-js-client')
 jest.mock('../../src/server/helpers/request', () => {
   return {
-    getURLMeta: (url) => {
+    getURLMeta: () => {
       return Promise.resolve({ size: 7580, type: 'image/jpg' })
     },
   }

packages/@uppy/core/src/UIPlugin.js

@@ -1,4 +1,4 @@
-const { render, h } = require('preact')
+const { render } = require('preact')
 const findDOMElement = require('@uppy/utils/lib/findDOMElement')
 
 const BasePlugin = require('./BasePlugin')

packages/@uppy/core/src/loggers.js

@@ -4,8 +4,8 @@ const getTimeStamp = require('@uppy/utils/lib/getTimeStamp')
 // Swallow all logs, except errors.
 // default if logger is not set or debug: false
 const justErrorsLogger = {
-  debug: (...args) => {},
-  warn: (...args) => {},
+  debug: () => {},
+  warn: () => {},
   error: (...args) => console.error(`[Uppy] [${getTimeStamp()}]`, ...args),
 }
 

packages/@uppy/core/types/index.test-d.ts

@@ -91,12 +91,14 @@ type anyObject = Record<string, unknown>
 
   // Normal event signature
   uppy.on('complete', (result) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const successResults = result.successful
   })
 
   // Meta signature
   type Meta = {myCustomMetadata: string}
   uppy.on<'complete', Meta>('complete', (result) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const meta = result.successful[0].meta.myCustomMetadata
   })
 }

packages/@uppy/dashboard/src/components/AddFilesPanel.js

@@ -16,7 +16,7 @@ const AddFilesPanel = (props) => {
         <button
           className="uppy-DashboardContent-back"
           type="button"
-          onClick={(ev) => props.toggleAddFilesPanel(false)}
+          onClick={() => props.toggleAddFilesPanel(false)}
         >
           {props.i18n('back')}
         </button>

packages/@uppy/dashboard/src/components/FileList.js

@@ -6,7 +6,7 @@ const VirtualList = require('./VirtualList')
 function chunks (list, size) {
   const chunked = []
   let currentChunk = []
-  list.forEach((item, i) => {
+  list.forEach((item) => {
     if (currentChunk.length < size) {
       currentChunk.push(item)
     } else {

packages/@uppy/dashboard/src/index.js

@@ -458,7 +458,7 @@ module.exports = class Dashboard extends UIPlugin {
     // Watch for Dashboard container (`.uppy-Dashboard-inner`) resize
     // and update containerWidth/containerHeight in plugin state accordingly.
     // Emits first event on initialization.
-    this.resizeObserver = new ResizeObserver((entries, observer) => {
+    this.resizeObserver = new ResizeObserver((entries) => {
       const uppyDashboardInnerEl = entries[0]
 
       const { width, height } = uppyDashboardInnerEl.contentRect
@@ -586,7 +586,7 @@ module.exports = class Dashboard extends UIPlugin {
     this.uppy.iteratePlugins((plugin) => {
       if (plugin.type === 'acquirer') {
         // Every Plugin with .type acquirer can define handleRootPaste(event)
-        plugin.handleRootPaste && plugin.handleRootPaste(event)
+        plugin.handleRootPaste?.(event)
       }
     })
 
@@ -634,7 +634,7 @@ module.exports = class Dashboard extends UIPlugin {
     }, 50)
   }
 
-  handleDrop = (event, dropCategory) => {
+  handleDrop = (event) => {
     event.preventDefault()
     event.stopPropagation()
 
@@ -651,7 +651,7 @@ module.exports = class Dashboard extends UIPlugin {
     this.uppy.iteratePlugins((plugin) => {
       if (plugin.type === 'acquirer') {
         // Every Plugin with .type acquirer can define handleRootDrop(event)
-        plugin.handleRootDrop && plugin.handleRootDrop(event)
+        plugin.handleRootDrop?.(event)
       }
     })
 

packages/@uppy/dashboard/src/utils/createSuperFocus.js

@@ -35,7 +35,7 @@ module.exports = function createSuperFocus () {
       lastFocusWasOnSuperFocusableEl = true
     } else {
       const firstEl = overlayEl.querySelector(FOCUSABLE_ELEMENTS)
-      firstEl && firstEl.focus({ preventScroll: true })
+      firstEl?.focus({ preventScroll: true })
       lastFocusWasOnSuperFocusableEl = false
     }
   }

packages/@uppy/dashboard/types/index.test-d.ts

@@ -50,6 +50,7 @@ import Dashboard from '..'
   })
 
   uppy.on('dashboard:file-edit-state', (file) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const fileName = file.name
   })
 }

packages/@uppy/drag-drop/src/index.js

@@ -1,5 +1,4 @@
 const { UIPlugin } = require('@uppy/core')
-const Translator = require('@uppy/utils/lib/Translator')
 const toArray = require('@uppy/utils/lib/toArray')
 const isDragDropSupported = require('@uppy/utils/lib/isDragDropSupported')
 const getDroppedFiles = require('@uppy/utils/lib/getDroppedFiles')

packages/@uppy/file-input/src/index.js

@@ -1,6 +1,5 @@
 const { UIPlugin } = require('@uppy/core')
 const toArray = require('@uppy/utils/lib/toArray')
-const Translator = require('@uppy/utils/lib/Translator')
 const { h } = require('preact')
 
 module.exports = class FileInput extends UIPlugin {
@@ -67,11 +66,11 @@ module.exports = class FileInput extends UIPlugin {
     event.target.value = null
   }
 
-  handleClick (ev) {
+  handleClick () {
     this.input.click()
   }
 
-  render (state) {
+  render () {
     /* http://tympanus.net/codrops/2015/09/15/styling-customizing-file-inputs-smart-way/ */
     const hiddenInputStyle = {
       width: '0.1px',

packages/@uppy/golden-retriever/src/IndexedDBStore.js

@@ -1,5 +1,3 @@
-const prettierBytes = require('@transloadit/prettier-bytes')
-
 const indexedDB = typeof window !== 'undefined'
   && (window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.OIndexedDB || window.msIndexedDB)
 
@@ -210,7 +208,6 @@ class IndexedDBStore {
         request.onsuccess = (event) => {
           const cursor = event.target.result
           if (cursor) {
-            const entry = cursor.value
             cursor.delete() // Ignoring return value … it's not terrible if this goes wrong.
             cursor.continue()
           } else {

packages/@uppy/image-editor/src/Editor.js

@@ -237,7 +237,7 @@ module.exports = class Editor extends Component {
   }
 
   render () {
-    const { currentImage, i18n, opts } = this.props
+    const { currentImage, opts } = this.props
     const { actions } = opts
     const imageURL = URL.createObjectURL(currentImage.data)
 

packages/@uppy/image-editor/src/index.js

@@ -1,5 +1,4 @@
 const { UIPlugin } = require('@uppy/core')
-const Translator = require('@uppy/utils/lib/Translator')
 const { h } = require('preact')
 const Editor = require('./Editor')
 

packages/@uppy/image-editor/types/index.test-d.ts

@@ -9,9 +9,11 @@ import ImageEditor from '..'
   uppy.use(ImageEditor)
 
   uppy.on('file-editor:start', (file) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const fileName = file.name
   })
   uppy.on('file-editor:complete', (file) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const fileName = file.name
   })
 }

packages/@uppy/locales/src/hu_HU.js

@@ -139,7 +139,7 @@ hu_HU.strings = {
   openFolderNamed: 'Nyitott mappa %{name}',
 }
 
-hu_HU.pluralize = function pluralize (n) {
+hu_HU.pluralize = function pluralize () {
   return 0
 }
 

packages/@uppy/locales/src/ko_KR.js

@@ -96,7 +96,7 @@ ko_KR.strings = {
   youHaveToAtLeastSelectX: '최소 %{smart_count}개의 파일을 선택해야 합니다',
 }
 
-ko_KR.pluralize = function pluralize (n) {
+ko_KR.pluralize = function pluralize () {
   return 0
 }
 

packages/@uppy/locales/src/zh_CN.js

@@ -110,7 +110,7 @@ zh_CN.strings = {
 }
 
 // There is just one form.
-zh_CN.pluralize = function pluralize (n) { return 0 }
+zh_CN.pluralize = function pluralize () { return 0 }
 
 if (typeof window !== 'undefined' && typeof window.Uppy !== 'undefined') {
   window.Uppy.locales.zh_CN = zh_CN

packages/@uppy/provider-views/src/ProviderView/ProviderView.js

@@ -1,7 +1,6 @@
 const { h } = require('preact')
 const generateFileID = require('@uppy/utils/lib/generateFileID')
 const getFileType = require('@uppy/utils/lib/getFileType')
-const findIndex = require('@uppy/utils/lib/findIndex')
 const isPreviewSupported = require('@uppy/utils/lib/isPreviewSupported')
 const AuthView = require('./AuthView')
 const Header = require('./Header')

packages/@uppy/react-native/file-picker/index.js

@@ -112,7 +112,7 @@ export default class UppyReactNativeFilePicker extends React.Component {
             <TouchableOpacity
               style={styles.providerButton}
               key={item.title}
-              onPress={ev => this.chooseProvider(item.id)}
+              onPress={() => this.chooseProvider(item.id)}
             >
               <Text style={styles.providerButtonText}>{item.title}</Text>
             </TouchableOpacity>
@@ -120,7 +120,7 @@ export default class UppyReactNativeFilePicker extends React.Component {
         })}
         <TouchableOpacity
           style={styles.cancelButton}
-          onPress={ev => this.props.onRequestClose()}
+          onPress={() => this.props.onRequestClose()}
         >
           <Text style={styles.cancelButtonText}>Cancel</Text>
         </TouchableOpacity>

packages/@uppy/react-native/file-picker/provider-grid.js

@@ -26,7 +26,7 @@ export default class Example extends React.Component {
         // staticDimension={300}
         // fixed
         // spacing={20}
-        renderItem={({ item, index }) => (
+        renderItem={({ item }) => (
           <View style={[styles.itemContainer, { backgroundColor: item.code }]}>
             <Text style={styles.itemName}>{item.name}</Text>
             <Text style={styles.itemCode}>{item.code}</Text>

packages/@uppy/react-native/file-picker/selectDocument.js

@@ -1,6 +1,6 @@
 import * as DocumentPicker from 'expo-document-picker'
 
-function selectDocumentWithExpo (options) {
+function selectDocumentWithExpo () {
   return DocumentPicker.getDocumentAsync({
     copyToCacheDirectory: false,
   }).then((result) => {

packages/@uppy/react-native/file-picker/url.js

@@ -66,7 +66,7 @@ export default class UppyRNUrl extends React.Component {
         </TouchableOpacity>
         <TouchableOpacity
           style={styles.buttonCancel}
-          onPress={ev => this.props.onDone()}
+          onPress={() => this.props.onDone()}
         >
           <Text style={styles.buttonCancelText}>Cancel</Text>
         </TouchableOpacity>

packages/@uppy/redux-dev-tools/src/index.js

@@ -27,7 +27,7 @@ module.exports = class ReduxDevTools extends UIPlugin {
     this.initDevTools = this.initDevTools.bind(this)
   }
 
-  handleStateChange (prevState, nextState, patch) {
+  handleStateChange (prevState, nextState) {
     this.devTools.send('UPPY_STATE_UPDATE', nextState)
   }
 

packages/@uppy/screen-capture/src/index.js

@@ -1,6 +1,5 @@
 const { h } = require('preact')
 const { UIPlugin } = require('@uppy/core')
-const Translator = require('@uppy/utils/lib/Translator')
 const getFileTypeExtension = require('@uppy/utils/lib/getFileTypeExtension')
 const ScreenRecIcon = require('./ScreenRecIcon')
 const CaptureScreen = require('./CaptureScreen')
@@ -148,7 +147,7 @@ module.exports = class ScreenCapture extends UIPlugin {
         this.videoStream = videoStream
 
         // add event listener to stop recording if stream is interrupted
-        this.videoStream.addEventListener('inactive', (event) => {
+        this.videoStream.addEventListener('inactive', () => {
           this.streamInactivated()
         })
 
@@ -275,7 +274,7 @@ module.exports = class ScreenCapture extends UIPlugin {
   }
 
   stopRecording () {
-    const stopped = new Promise((resolve, reject) => {
+    const stopped = new Promise((resolve) => {
       this.recorder.addEventListener('stop', () => {
         resolve()
       })
@@ -385,7 +384,7 @@ module.exports = class ScreenCapture extends UIPlugin {
     return Promise.resolve(file)
   }
 
-  render (state) {
+  render () {
     // get screen recorder state
     const recorderState = this.getPluginState()
 

packages/@uppy/status-bar/src/StatusBar.js

@@ -383,7 +383,7 @@ const ProgressBarUploading = (props) => {
   )
 }
 
-const ProgressBarComplete = ({ totalProgress, i18n }) => {
+const ProgressBarComplete = ({ i18n }) => {
   return (
     <div className="uppy-StatusBar-content" role="status" title={i18n('complete')}>
       <div className="uppy-StatusBar-status">
@@ -398,7 +398,7 @@ const ProgressBarComplete = ({ totalProgress, i18n }) => {
   )
 }
 
-const ProgressBarError = ({ error, retryAll, hideRetryButton, i18n }) => {
+const ProgressBarError = ({ error, i18n }) => {
   function displayErrorAlert () {
     const errorMessage = `${i18n('uploadFailed')} \n\n ${error}`
     // eslint-disable-next-line no-alert

packages/@uppy/status-bar/src/index.js

@@ -1,5 +1,4 @@
 const { UIPlugin } = require('@uppy/core')
-const Translator = require('@uppy/utils/lib/Translator')
 const getSpeed = require('@uppy/utils/lib/getSpeed')
 const getBytesRemaining = require('@uppy/utils/lib/getBytesRemaining')
 const getTextDirection = require('@uppy/utils/lib/getTextDirection')

packages/@uppy/thumbnail-generator/src/index.js

@@ -1,5 +1,4 @@
 const { UIPlugin } = require('@uppy/core')
-const Translator = require('@uppy/utils/lib/Translator')
 const dataURItoBlob = require('@uppy/utils/lib/dataURItoBlob')
 const isObjectURL = require('@uppy/utils/lib/isObjectURL')
 const isPreviewSupported = require('@uppy/utils/lib/isPreviewSupported')
@@ -66,7 +65,7 @@ module.exports = class ThumbnailGenerator extends UIPlugin {
       })
     })
 
-    const orientationPromise = exifr.rotation(file.data).catch(_err => 1)
+    const orientationPromise = exifr.rotation(file.data).catch(() => 1)
 
     return Promise.all([onload, orientationPromise])
       .then(([image, orientation]) => {
@@ -347,7 +346,7 @@ module.exports = class ThumbnailGenerator extends UIPlugin {
       })
     }
 
-    return new Promise((resolve, reject) => {
+    return new Promise((resolve) => {
       if (this.queueProcessing) {
         this.uppy.once('thumbnail:all-generated', () => {
           emitPreprocessCompleteForAll()

packages/@uppy/transloadit/src/index.js

@@ -1,4 +1,3 @@
-const Translator = require('@uppy/utils/lib/Translator')
 const hasProperty = require('@uppy/utils/lib/hasProperty')
 const { BasePlugin } = require('@uppy/core')
 const Tus = require('@uppy/tus')

packages/@uppy/transloadit/src/index.test.js

@@ -35,7 +35,7 @@ describe('Transloadit', () => {
   it('Does not leave lingering progress if getAssemblyOptions fails', () => {
     const uppy = new Core()
     uppy.use(Transloadit, {
-      getAssemblyOptions (file) {
+      getAssemblyOptions () {
         return Promise.reject(new Error('Failure!'))
       },
     })

packages/@uppy/transloadit/types/index.test-d.ts

@@ -26,11 +26,13 @@ const validParams = {
     },
   })
   // Access to both transloadit events and core events
-  uppy.on('transloadit:assembly-created', (assembly, fileIDs) => {
+  uppy.on('transloadit:assembly-created', (assembly) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const status = assembly.ok
   })
 
   uppy.on('complete', (result) => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const success = result.successful
   })
 }

packages/@uppy/tus/src/index.js

@@ -173,7 +173,7 @@ module.exports = class Tus extends BasePlugin {
    * @param {number} total number of files in a queue
    * @returns {Promise<void>}
    */
-  upload (file, current, total) {
+  upload (file) {
     this.resetUploaderReferences(file.id)
 
     // Create a new tus upload
@@ -584,7 +584,7 @@ module.exports = class Tus extends BasePlugin {
    * @param {function(): void} cb
    */
   onRetryAll (fileID, cb) {
-    this.uploaderEvents[fileID].on('retry-all', (filesToRetry) => {
+    this.uploaderEvents[fileID].on('retry-all', () => {
       if (!this.uppy.getFile(fileID)) return
       cb()
     })

packages/@uppy/url/src/index.js

@@ -1,5 +1,4 @@
 const { UIPlugin } = require('@uppy/core')
-const Translator = require('@uppy/utils/lib/Translator')
 const { h } = require('preact')
 const { RequestClient } = require('@uppy/companion-client')
 const UrlUI = require('./UrlUI.js')
@@ -170,7 +169,7 @@ module.exports = class Url extends UIPlugin {
     })
   }
 
-  render (state) {
+  render () {
     return <UrlUI i18n={this.i18n} addFile={this.addFile} />
   }
 

packages/@uppy/webcam/src/CameraIcon.js

@@ -1,6 +1,6 @@
 const { h } = require('preact')
 
-module.exports = (props) => {
+module.exports = () => {
   return (
     <svg aria-hidden="true" focusable="false" fill="#0097DC" width="66" height="55" viewBox="0 0 66 55">
       <path d="M57.3 8.433c4.59 0 8.1 3.51 8.1 8.1v29.7c0 4.59-3.51 8.1-8.1 8.1H8.7c-4.59 0-8.1-3.51-8.1-8.1v-29.7c0-4.59 3.51-8.1 8.1-8.1h9.45l4.59-7.02c.54-.54 1.35-1.08 2.16-1.08h16.2c.81 0 1.62.54 2.16 1.08l4.59 7.02h9.45zM33 14.64c-8.62 0-15.393 6.773-15.393 15.393 0 8.62 6.773 15.393 15.393 15.393 8.62 0 15.393-6.773 15.393-15.393 0-8.62-6.773-15.393-15.393-15.393zM33 40c-5.648 0-9.966-4.319-9.966-9.967 0-5.647 4.318-9.966 9.966-9.966s9.966 4.319 9.966 9.966C42.966 35.681 38.648 40 33 40z" fillRule="evenodd" />

packages/@uppy/xhr-upload/src/index.js

@@ -1,6 +1,5 @@
 const { BasePlugin } = require('@uppy/core')
 const { nanoid } = require('nanoid')
-const Translator = require('@uppy/utils/lib/Translator')
 const { Provider, RequestClient, Socket } = require('@uppy/companion-client')
 const emitSocketProgress = require('@uppy/utils/lib/emitSocketProgress')
 const getSocketHost = require('@uppy/utils/lib/getSocketHost')

packages/@uppy/xhr-upload/src/index.test.js

@@ -49,7 +49,7 @@ describe('XHRUpload', () => {
         })
 
       const core = new Core()
-      const validateStatus = jest.fn((status, responseText, response) => {
+      const validateStatus = jest.fn((status, responseText) => {
         return JSON.parse(responseText).code !== 40000
       })
 
@@ -58,7 +58,7 @@ describe('XHRUpload', () => {
         endpoint: 'https://fake-endpoint.uppy.io',
         some: 'option',
         validateStatus,
-        getResponseError (responseText, xhr) {
+        getResponseError (responseText) {
           return JSON.parse(responseText).message
         },
       })

test/endtoend/utils.js

@@ -167,7 +167,7 @@ class TusService {
           period: 20,
           rate: 200 * 1024 / 50,
         })),
-      }, (err) => { // eslint-disable-line node/handle-callback-err
+      }, (err) => { // eslint-disable-line node/handle-callback-err,no-unused-vars
         // ignore, typically a cancelled request
       })
     })

test/endtoend/wdio.base.conf.js

@@ -127,7 +127,7 @@ exports.config = {
    * @param {Array.<object>} capabilities list of capabilities details
    * @param {Array<string>} specs List of spec file paths that are to be run
    */
-  before (capabilities, specs) {
+  before (capabilities) {
     const chai = require('chai')
     global.expect = chai.expect
     global.capabilities = capabilities

website/private_modules/hexo-renderer-uppyexamples/index.js

@@ -24,7 +24,7 @@ function parseExamplesBrowserify (data, options, callback) {
   const tmpFile = `/tmp/${slug}.js`
   const cmd = `node ${browserifyScript} ${data.path} ${tmpFile} --colors`
   // hexo.log.i('hexo-renderer-uppyexamples: change detected in examples. running: ' + cmd);
-  exec(cmd, (err, stdout, stderr) => {
+  exec(cmd, (err, stdout) => {
     if (err) {
       return callback(err)
     }