diff --git a/cypress/e2e/mixins/oddname.ts b/cypress/e2e/mixins/oddname.ts
index 5c633a612..0ab53d662 100644
--- a/cypress/e2e/mixins/oddname.ts
+++ b/cypress/e2e/mixins/oddname.ts
@@ -43,7 +43,7 @@ function naughtyFileName(realName) {
 }
 
 let failsLeft = 5
-Cypress.on('fail', (error, runnable) => {
+Cypress.on('fail', (error) => {
 	failsLeft--
 	throw error // throw error to have test still fail
 })
diff --git a/src/components/Images.vue b/src/components/Images.vue
index 46b1af356..2a80277fe 100644
--- a/src/components/Images.vue
+++ b/src/components/Images.vue
@@ -263,7 +263,7 @@ export default {
 		},
 
 		// Fallback to the original image if not already done
-		onFail(event) {
+		onFail() {
 			if (!this.fallback) {
 				console.error(`Loading of file preview ${basename(this.src)} failed, falling back to original file`)
 				this.fallback = true
diff --git a/src/components/Videos.vue b/src/components/Videos.vue
index 6a3829315..7762bd5fd 100644
--- a/src/components/Videos.vue
+++ b/src/components/Videos.vue
@@ -141,7 +141,7 @@ export default {
 	},
 
 	methods: {
-		hideHeaderAndFooter(e) {
+		hideHeaderAndFooter() {
 			// work arround to get the state of the fullscreen button, aria-selected attribute is not reliable
 			this.isFullscreenButtonVisible = !this.isFullscreenButtonVisible
 			if (this.isFullscreenButtonVisible) {
diff --git a/src/services/Viewer.js b/src/services/Viewer.js
index d50588f1f..c1035a391 100644
--- a/src/services/Viewer.js
+++ b/src/services/Viewer.js
@@ -102,7 +102,7 @@ export default class Viewer {
 		this._state.handlers.push(handler)
 		const handledMimes = [
 			...handler.mimes,
-			...Object.keys(handler.mimesAliases || {})
+			...Object.keys(handler.mimesAliases || {}),
 		]
 		this._mimetypes.push.apply(this._mimetypes, handledMimes)
 		if (handler?.canCompare === true) {
diff --git a/src/utils/numberUtil.ts b/src/utils/numberUtil.ts
index 9a70aa7ea..2f75785cf 100644
--- a/src/utils/numberUtil.ts
+++ b/src/utils/numberUtil.ts
@@ -20,7 +20,7 @@
  *
  */
 
-const isNumber = function(num: any): boolean {
+const isNumber = function(num): boolean {
 	if (!num) {
 		return false
 	}
diff --git a/src/views/Viewer.vue b/src/views/Viewer.vue
index ca8956ee8..51e4a69e6 100644
--- a/src/views/Viewer.vue
+++ b/src/views/Viewer.vue
@@ -510,7 +510,7 @@ export default {
 
 	beforeMount() {
 		// register on load
-		document.addEventListener('DOMContentLoaded', event => {
+		document.addEventListener('DOMContentLoaded', () => {
 			// register all primary components mimes
 			this.handlers.forEach(handler => {
 				this.registerHandler(handler)