From 3ae6450f0b7356321143243b938bca9ac0e73ee3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Iv=C3=A1n=20Ovejero?= <ivov.src@gmail.com>
Date: Mon, 29 Aug 2022 12:21:40 +0200
Subject: [PATCH] Fix all type errors in design system (#3956)

* :blue_book: Fix type errors in design system

* :fire: Remove unneeded `?`

* :wrench: Add design system to Vetur

* :blue_book: Improve typing of `$el`

* :recycle: Address feedback

* :blue_book: Type leftover `MouseEvent`

* :blue_book: Type `event.target` properly
---
 .../N8nActionToggle/ActionToggle.vue          |  5 ++-
 .../src/components/N8nAvatar/Avatar.vue       |  2 +-
 .../src/components/N8nCallout/Callout.vue     |  2 +-
 .../src/components/N8nCheckbox/Checkbox.vue   |  4 +-
 .../src/components/N8nFormBox/FormBox.vue     |  4 +-
 .../src/components/N8nFormInput/FormInput.vue | 12 ++---
 .../components/N8nFormInputs/FormInputs.vue   | 12 +++--
 .../src/components/N8nHeading/Heading.vue     |  2 +-
 .../components/N8nIconButton/IconButton.vue   |  4 --
 .../src/components/N8nInput/Input.vue         | 45 ++++++++++++++-----
 .../src/components/N8nLink/Link.vue           |  2 -
 .../src/components/N8nMarkdown/Markdown.vue   |  9 ++--
 .../src/components/N8nNotice/Notice.vue       | 19 ++++----
 .../N8nRadioButtons/RadioButtons.vue          |  2 +-
 .../src/components/N8nSelect/Select.vue       | 16 +++----
 .../src/components/N8nSticky/Resize.vue       | 43 +++++++++---------
 .../src/components/N8nSticky/Sticky.vue       | 16 +++----
 .../src/components/N8nTabs/Tabs.vue           | 18 +++++---
 .../src/components/N8nText/Text.vue           |  2 +-
 .../src/components/N8nTree/Tree.vue           |  4 +-
 .../components/N8nUserSelect/UserSelect.vue   |  8 +++-
 .../src/components/N8nUsersList/UsersList.vue |  6 ++-
 .../ResizeObserver/ResizeObserver.vue         |  8 ++--
 packages/design-system/src/main.d.ts          |  1 +
 .../design-system/src/shims-element-ui.d.ts   |  3 ++
 .../src/shims-vue2-boring-avatars.d.ts        |  1 +
 packages/design-system/src/types/form.ts      |  2 +-
 packages/design-system/src/types/user.ts      |  3 +-
 vetur.config.js                               |  2 +-
 29 files changed, 153 insertions(+), 104 deletions(-)
 create mode 100644 packages/design-system/src/shims-vue2-boring-avatars.d.ts

diff --git a/packages/design-system/src/components/N8nActionToggle/ActionToggle.vue b/packages/design-system/src/components/N8nActionToggle/ActionToggle.vue
index 7265a1c03b..6f97c0366e 100644
--- a/packages/design-system/src/components/N8nActionToggle/ActionToggle.vue
+++ b/packages/design-system/src/components/N8nActionToggle/ActionToggle.vue
@@ -35,8 +35,9 @@ import ElDropdown from 'element-ui/lib/dropdown';
 import ElDropdownMenu from 'element-ui/lib/dropdown-menu';
 import ElDropdownItem from 'element-ui/lib/dropdown-item';
 import N8nIcon from '../N8nIcon';
+import Vue from 'vue';
 
-export default {
+export default Vue.extend({
 	name: 'n8n-action-toggle',
 	components: {
 		ElDropdown,
@@ -79,7 +80,7 @@ export default {
 			this.$emit('visible-change', value);
 		},
 	},
-};
+});
 </script>
 
 <style lang="scss" module>
diff --git a/packages/design-system/src/components/N8nAvatar/Avatar.vue b/packages/design-system/src/components/N8nAvatar/Avatar.vue
index d2017fa200..ccc86a59a1 100644
--- a/packages/design-system/src/components/N8nAvatar/Avatar.vue
+++ b/packages/design-system/src/components/N8nAvatar/Avatar.vue
@@ -53,7 +53,7 @@ export default Vue.extend({
 		},
 	},
 	methods: {
-		getColors(colors): string[] {
+		getColors(colors: string[]): string[] {
 			const style = getComputedStyle(document.body);
 			return colors.map((color: string) => style.getPropertyValue(color));
 		},
diff --git a/packages/design-system/src/components/N8nCallout/Callout.vue b/packages/design-system/src/components/N8nCallout/Callout.vue
index 17cc94088e..5c0382fa82 100644
--- a/packages/design-system/src/components/N8nCallout/Callout.vue
+++ b/packages/design-system/src/components/N8nCallout/Callout.vue
@@ -21,7 +21,7 @@ import Vue from 'vue';
 import N8nIcon from '../N8nIcon';
 import N8nText from '../N8nText';
 
-const CALLOUT_DEFAULT_ICONS = {
+const CALLOUT_DEFAULT_ICONS: { [key: string]: string } = {
 	info: 'info-circle',
 	success: 'check-circle',
 	warning: 'exclamation-triangle',
diff --git a/packages/design-system/src/components/N8nCheckbox/Checkbox.vue b/packages/design-system/src/components/N8nCheckbox/Checkbox.vue
index 3529bf9071..e91d9d7e89 100644
--- a/packages/design-system/src/components/N8nCheckbox/Checkbox.vue
+++ b/packages/design-system/src/components/N8nCheckbox/Checkbox.vue
@@ -56,8 +56,8 @@ export default Vue.extend({
 		},
 	},
 	methods: {
-		onChange(e) {
-			this.$emit("input", e);
+		onChange(event: Event) {
+			this.$emit("input", event);
 		},
 	}
 });
diff --git a/packages/design-system/src/components/N8nFormBox/FormBox.vue b/packages/design-system/src/components/N8nFormBox/FormBox.vue
index cf099eec21..f952d40880 100644
--- a/packages/design-system/src/components/N8nFormBox/FormBox.vue
+++ b/packages/design-system/src/components/N8nFormBox/FormBox.vue
@@ -112,8 +112,8 @@ export default Vue.extend({
 		onButtonClick() {
 			this.formBus.$emit('submit');
 		},
-		onSecondaryButtonClick(e) {
-			this.$emit('secondaryClick', e);
+		onSecondaryButtonClick(event: Event) {
+			this.$emit('secondaryClick', event);
 		},
 	},
 });
diff --git a/packages/design-system/src/components/N8nFormInput/FormInput.vue b/packages/design-system/src/components/N8nFormInput/FormInput.vue
index 659368f09d..5a70bd4e73 100644
--- a/packages/design-system/src/components/N8nFormInput/FormInput.vue
+++ b/packages/design-system/src/components/N8nFormInput/FormInput.vue
@@ -155,7 +155,7 @@ export default mixins(Locale).extend({
 		this.$emit('validate', !this.validationError);
 
 		if (this.focusInitially && this.$refs.input) {
-			this.$refs.input.focus();
+			(this.$refs.input as HTMLTextAreaElement).focus();
 		}
 	},
 	computed: {
@@ -186,7 +186,7 @@ export default mixins(Locale).extend({
 			} as { [key: string]: IValidator | RuleGroup };
 
 			if (this.required) {
-				const error = getValidationError(this.value, validators, validators.REQUIRED as Validator);
+				const error = getValidationError(this.value, validators, validators.REQUIRED as IValidator);
 				if (error) {
 					return error;
 				}
@@ -199,7 +199,7 @@ export default mixins(Locale).extend({
 						const error = getValidationError(
 							this.value,
 							validators,
-							validators[rule.name] as Validator,
+							validators[rule.name] as IValidator,
 							rule.config,
 						);
 						if (error) {
@@ -235,9 +235,9 @@ export default mixins(Locale).extend({
 		onFocus() {
 			this.$emit('focus');
 		},
-		onEnter(e) {
-			e.stopPropagation();
-			e.preventDefault();
+		onEnter(event: Event) {
+			event.stopPropagation();
+			event.preventDefault();
 			this.$emit('enter');
 		},
 	},
diff --git a/packages/design-system/src/components/N8nFormInputs/FormInputs.vue b/packages/design-system/src/components/N8nFormInputs/FormInputs.vue
index bce8fb92de..ef08229ecc 100644
--- a/packages/design-system/src/components/N8nFormInputs/FormInputs.vue
+++ b/packages/design-system/src/components/N8nFormInputs/FormInputs.vue
@@ -29,7 +29,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import N8nFormInput from '../N8nFormInput';
-import { IFormInputs } from '../../types';
+import type { IFormInput } from '../../types';
 import ResizeObserver from '../ResizeObserver';
 
 export default Vue.extend({
@@ -60,7 +60,7 @@ export default Vue.extend({
 		};
 	},
 	mounted() {
-		(this.inputs as IFormInputs).forEach((input: IFormInput) => {
+		(this.inputs as IFormInput[]).forEach((input) => {
 			if (input.hasOwnProperty('initialValue')) {
 				Vue.set(this.values, input.name, input.initialValue);
 			}
@@ -72,7 +72,11 @@ export default Vue.extend({
 	},
 	computed: {
 		filteredInputs(): IFormInput[] {
-			return this.inputs.filter((input: IFormInput) => typeof input.shouldDisplay === 'function'? input.shouldDisplay(this.values): true);
+			return (this.inputs as IFormInput[]).filter(
+				(input) => typeof input.shouldDisplay === 'function'
+					? input.shouldDisplay(this.values)
+					: true
+			);
 		},
 		isReadyToSubmit(): boolean {
 			for (let key in this.validity) {
@@ -98,7 +102,7 @@ export default Vue.extend({
 		onSubmit() {
 			this.showValidationWarnings = true;
 			if (this.isReadyToSubmit) {
-				const toSubmit = this.filteredInputs.reduce((accu, input: IFormInput) => {
+				const toSubmit = (this.filteredInputs as IFormInput[]).reduce<{ [key: string]: unknown }>((accu, input) => {
 					if (this.values[input.name]) {
 						accu[input.name] = this.values[input.name];
 					}
diff --git a/packages/design-system/src/components/N8nHeading/Heading.vue b/packages/design-system/src/components/N8nHeading/Heading.vue
index cf2b90779f..aee9fd5f33 100644
--- a/packages/design-system/src/components/N8nHeading/Heading.vue
+++ b/packages/design-system/src/components/N8nHeading/Heading.vue
@@ -46,7 +46,7 @@ export default Vue.extend({
 
 			applied.push(this.bold? 'bold': 'regular');
 
-			return applied.map((c) => this.$style[c]);
+			return applied.map((c) => (this.$style as { [key: string]: string })[c]);
 		}
 	},
 });
diff --git a/packages/design-system/src/components/N8nIconButton/IconButton.vue b/packages/design-system/src/components/N8nIconButton/IconButton.vue
index afdad86a71..a5ffc96256 100644
--- a/packages/design-system/src/components/N8nIconButton/IconButton.vue
+++ b/packages/design-system/src/components/N8nIconButton/IconButton.vue
@@ -58,10 +58,6 @@ export default Vue.extend({
 			type: Boolean,
 			default: true,
 		},
-		circle: {
-			type: Boolean,
-			default: true,
-		},
 	},
 });
 </script>
diff --git a/packages/design-system/src/components/N8nInput/Input.vue b/packages/design-system/src/components/N8nInput/Input.vue
index 88dd1c08ac..2577fb58e1 100644
--- a/packages/design-system/src/components/N8nInput/Input.vue
+++ b/packages/design-system/src/components/N8nInput/Input.vue
@@ -87,22 +87,43 @@ export default Vue.extend({
 	},
 	methods: {
 		focus() {
-			if (this.$refs.innerInput.$el) {
-				// @ts-ignore
-				(this.$refs.innerInput.$el.querySelector(this.type === 'textarea' ? 'textarea' : 'input') as HTMLInputElement).focus();
-			}
+			const innerInput = this.$refs.innerInput as Vue | undefined;
+
+			if (!innerInput) return;
+
+			const inputElement = innerInput.$el.querySelector(
+				this.type === 'textarea' ? 'textarea' : 'input',
+			);
+
+			if (!inputElement) return;
+
+			inputElement.focus();
 		},
 		blur() {
-			if (this.$refs.innerInput.$el) {
-				// @ts-ignore
-				(this.$refs.innerInput.$el.querySelector(this.type === 'textarea' ? 'textarea' : 'input') as HTMLInputElement).blur();
-			}
+			const innerInput = this.$refs.innerInput as Vue | undefined;
+
+			if (!innerInput) return;
+
+			const inputElement = innerInput.$el.querySelector(
+				this.type === 'textarea' ? 'textarea' : 'input',
+			);
+
+			if (!inputElement) return;
+
+			inputElement.blur();
 		},
 		select() {
-			if (this.$refs.innerInput.$el) {
-				// @ts-ignore
-				(this.$refs.innerInput.$el.querySelector(this.type === 'textarea' ? 'textarea' : 'input') as HTMLInputElement).select();
-			}
+			const innerInput = this.$refs.innerInput as Vue | undefined;
+
+			if (!innerInput) return;
+
+			const inputElement = innerInput.$el.querySelector(
+				this.type === 'textarea' ? 'textarea' : 'input',
+			);
+
+			if (!inputElement) return;
+
+			inputElement.select();
 		},
 	},
 });
diff --git a/packages/design-system/src/components/N8nLink/Link.vue b/packages/design-system/src/components/N8nLink/Link.vue
index 65c57e1379..12dadeaac9 100644
--- a/packages/design-system/src/components/N8nLink/Link.vue
+++ b/packages/design-system/src/components/N8nLink/Link.vue
@@ -18,8 +18,6 @@ import Vue from 'vue';
 import N8nText from '../N8nText';
 import N8nRoute from '../N8nRoute';
 
-import Vue from 'vue';
-
 export default Vue.extend({
 	name: 'n8n-link',
 	props: {
diff --git a/packages/design-system/src/components/N8nMarkdown/Markdown.vue b/packages/design-system/src/components/N8nMarkdown/Markdown.vue
index 141a1eae2c..8029a06ba1 100644
--- a/packages/design-system/src/components/N8nMarkdown/Markdown.vue
+++ b/packages/design-system/src/components/N8nMarkdown/Markdown.vue
@@ -28,7 +28,7 @@ const markdownLink = require('markdown-it-link-attributes');
 const markdownEmoji = require('markdown-it-emoji');
 const markdownTasklists = require('markdown-it-task-lists');
 
-import xss from 'xss';
+import xss, { friendlyAttrValue } from 'xss';
 import { escapeMarkdown } from '../../utils/markdown';
 
 const DEFAULT_OPTIONS_MARKDOWN = {
@@ -131,7 +131,7 @@ export default Vue.extend({
 					if (tag === 'img' && name === 'src') {
 						if (value.match(fileIdRegex)) {
 							const id = value.split('fileId:')[1];
-							return `src=${xss.friendlyAttrValue(imageUrls[id])}` || '';
+							return `src=${friendlyAttrValue(imageUrls[id])}` || '';
 						}
 						// Only allow http requests to supported image files from the `static` directory
 						const isImageFile = value.split('#')[0].match(/\.(jpeg|jpg|gif|png|webp)$/) !== null;
@@ -162,13 +162,14 @@ export default Vue.extend({
 		};
 	},
 	methods: {
-		onClick(event) {
+		onClick(event: MouseEvent) {
 			let clickedLink = null;
 
 			if(event.target instanceof HTMLAnchorElement) {
 				clickedLink = event.target;
 			}
-			if(event.target.matches('a *')) {
+
+			if(event.target instanceof HTMLElement && event.target.matches('a *')) {
 				const parentLink = event.target.closest('a');
 				if(parentLink) {
 					clickedLink = parentLink;
diff --git a/packages/design-system/src/components/N8nNotice/Notice.vue b/packages/design-system/src/components/N8nNotice/Notice.vue
index a093a20219..6f0681dbb7 100644
--- a/packages/design-system/src/components/N8nNotice/Notice.vue
+++ b/packages/design-system/src/components/N8nNotice/Notice.vue
@@ -77,24 +77,27 @@ export default Vue.extend({
 				},
 			);
 		},
-		onClick(e) {
-			if (e.target.localName !== 'a') return;
+		onClick(event: MouseEvent) {
+			if (!(event.target instanceof HTMLElement)) return;
 
-			if (e.target.dataset && e.target.dataset.key) {
-				e.stopPropagation();
-				e.preventDefault();
+			if (event.target.localName !== 'a') return;
 
-				if (e.target.dataset.key === 'show-less') {
+			if (event.target.dataset && event.target.dataset.key) {
+				event.stopPropagation();
+				event.preventDefault();
+
+				if (event.target.dataset.key === 'show-less') {
 					this.showFullContent = false;
-				} else if (this.canTruncate && e.target.dataset.key === 'toggle-expand') {
+				} else if (this.canTruncate && event.target.dataset.key === 'toggle-expand') {
 					this.showFullContent = !this.showFullContent;
 				} else {
-					this.$emit('action', e.target.dataset.key);
+					this.$emit('action', event.target.dataset.key);
 				}
 			}
 		},
 	},
 });
+
 </script>
 
 <style lang="scss" module>
diff --git a/packages/design-system/src/components/N8nRadioButtons/RadioButtons.vue b/packages/design-system/src/components/N8nRadioButtons/RadioButtons.vue
index a3f00d1353..4b07c67662 100644
--- a/packages/design-system/src/components/N8nRadioButtons/RadioButtons.vue
+++ b/packages/design-system/src/components/N8nRadioButtons/RadioButtons.vue
@@ -36,7 +36,7 @@ export default Vue.extend({
 		RadioButton,
 	},
 	methods: {
-		onClick(value) {
+		onClick(value: unknown) {
 			if (this.disabled) {
 				return;
 			}
diff --git a/packages/design-system/src/components/N8nSelect/Select.vue b/packages/design-system/src/components/N8nSelect/Select.vue
index d969e995e6..ea058fd627 100644
--- a/packages/design-system/src/components/N8nSelect/Select.vue
+++ b/packages/design-system/src/components/N8nSelect/Select.vue
@@ -112,21 +112,21 @@ export default Vue.extend({
 	},
 	methods: {
 		focus() {
-			const input = this.$refs.innerSelect;
-			if (input) {
-				input.focus();
+			const select = this.$refs.innerSelect as Vue & HTMLElement | undefined;
+			if (select) {
+				select.focus();
 			}
 		},
 		blur() {
-			const input = this.$refs.innerSelect;
-			if (input) {
-				input.blur();
+			const select = this.$refs.innerSelect as Vue & HTMLElement | undefined;
+			if (select) {
+				select.blur();
 			}
 		},
 		focusOnInput() {
-			const select = (this.$refs.innerSelect) as (Vue | undefined);
+			const select = this.$refs.innerSelect as Vue & HTMLElement | undefined;
 			if (select) {
-				const input = select.$refs.input;
+				const input = select.$refs.input as Vue & HTMLElement | undefined;
 				if (input) {
 					input.focus();
 				}
diff --git a/packages/design-system/src/components/N8nSticky/Resize.vue b/packages/design-system/src/components/N8nSticky/Resize.vue
index 72e75ccbd7..8427ac2ebd 100644
--- a/packages/design-system/src/components/N8nSticky/Resize.vue
+++ b/packages/design-system/src/components/N8nSticky/Resize.vue
@@ -13,7 +13,7 @@
 </template>
 
 <script lang="ts">
-const cursorMap = {
+const cursorMap: { [key: string]: string } = {
 	right: 'ew-resize',
 	top: 'ns-resize',
 	bottom: 'ns-resize',
@@ -25,7 +25,7 @@ const cursorMap = {
 };
 
 function closestNumber(value: number, divisor: number): number {
-	let q = parseInt(value / divisor);
+	let q = value / divisor;
 	let n1 = divisor * q;
 
 	let n2 = (value * divisor) > 0 ?
@@ -37,7 +37,7 @@ function closestNumber(value: number, divisor: number): number {
 	return n2;
 }
 
-function getSize(delta, min, virtual, gridSize): number {
+function getSize(delta: number, min: number, virtual: number, gridSize: number): number {
 	const target = closestNumber(virtual, gridSize);
 	if (target >= min && virtual > 0) {
 		return target;
@@ -87,16 +87,19 @@ export default Vue.extend({
 		};
 	},
 	methods: {
-		resizerMove(e) {
-			e.preventDefault();
-			e.stopPropagation();
+		resizerMove(event: MouseEvent) {
+			event.preventDefault();
+			event.stopPropagation();
+
+			const targetResizer = event.target as { dataset: { dir: string } } | null;
+			if (targetResizer) {
+				this.dir = targetResizer.dataset.dir;
+			}
 
-			const targetResizer = e.target;
-			this.dir = targetResizer.dataset.dir;
 			document.body.style.cursor = cursorMap[this.dir];
 
-			this.x = e.pageX;
-			this.y = e.pageY;
+			this.x = event.pageX;
+			this.y = event.pageY;
 			this.dWidth = 0;
 			this.dHeight = 0;
 			this.vHeight = this.height;
@@ -106,27 +109,27 @@ export default Vue.extend({
 			window.addEventListener('mouseup', this.mouseUp);
 			this.$emit('resizestart');
 		},
-		mouseMove(e) {
-			e.preventDefault();
-			e.stopPropagation();
+		mouseMove(event: MouseEvent) {
+			event.preventDefault();
+			event.stopPropagation();
 			let dWidth = 0;
 			let dHeight = 0;
 			let top = false;
 			let left = false;
 
 			if (this.dir.includes('right')) {
-				dWidth = e.pageX - this.x;
+				dWidth = event.pageX - this.x;
 			}
 			if (this.dir.includes('left')) {
-				dWidth = this.x - e.pageX;
+				dWidth = this.x - event.pageX;
 				left = true;
 			}
 			if (this.dir.includes('top')) {
-				dHeight = this.y - e.pageY;
+				dHeight = this.y - event.pageY;
 				top = true;
 			}
 			if (this.dir.includes('bottom')) {
-				dHeight = e.pageY - this.y;
+				dHeight = event.pageY - this.y;
 			}
 
 			const deltaWidth = (dWidth - this.dWidth) / this.scale;
@@ -144,9 +147,9 @@ export default Vue.extend({
 			this.dHeight = dHeight;
 			this.dWidth = dWidth;
 		},
-		mouseUp(e) {
-			e.preventDefault();
-			e.stopPropagation();
+		mouseUp(event: Event) {
+			event.preventDefault();
+			event.stopPropagation();
 			this.$emit('resizeend');
 			window.removeEventListener('mousemove', this.mouseMove);
 			window.removeEventListener('mouseup', this.mouseUp);
diff --git a/packages/design-system/src/components/N8nSticky/Sticky.vue b/packages/design-system/src/components/N8nSticky/Sticky.vue
index aa1c9c0ead..e8c5fd5096 100644
--- a/packages/design-system/src/components/N8nSticky/Sticky.vue
+++ b/packages/design-system/src/components/N8nSticky/Sticky.vue
@@ -66,7 +66,7 @@
 <script lang="ts">
 import N8nInput from '../N8nInput';
 import N8nMarkdown from '../N8nMarkdown';
-import Resize from './Resize';
+import Resize from './Resize.vue';
 import N8nText from '../N8nText';
 import Locale from '../../mixins/locale';
 import mixins from 'vue-typed-mixins';
@@ -141,13 +141,13 @@ export default mixins(Locale).extend({
 			}
 			return this.width;
 		},
-		styles() {
+		styles(): { height: string, width: string } {
 			return {
 				height: this.resHeight + 'px',
 				width: this.resWidth + 'px',
 			};
 		},
-		shouldShowFooter() {
+		shouldShowFooter(): boolean {
 			return this.resHeight > 100 && this.resWidth > 155;
 		},
 	},
@@ -157,7 +157,7 @@ export default mixins(Locale).extend({
 				this.$emit('edit', true);
 			}
 		},
-		onInputBlur(value) {
+		onInputBlur() {
 			if (!this.isResizing) {
 				this.$emit('edit', false);
 			}
@@ -165,13 +165,13 @@ export default mixins(Locale).extend({
 		onInput(value: string) {
 			this.$emit('input', value);
 		},
-		onMarkdownClick(link, event) {
+		onMarkdownClick(link: string, event: Event) {
 			this.$emit('markdown-click', link, event);
 		},
-		onResize(values) {
+		onResize(values: unknown[]) {
 			this.$emit('resize', values);
 		},
-		onResizeEnd(resizeEnd) {
+		onResizeEnd(resizeEnd: unknown) {
 			this.isResizing = false;
 			this.$emit('resizeend', resizeEnd);
 		},
@@ -187,7 +187,7 @@ export default mixins(Locale).extend({
 					!prevMode &&
 					this.$refs.input
 				) {
-					const textarea = this.$refs.input;
+					const textarea = this.$refs.input as HTMLTextAreaElement;
 					if (this.defaultText === this.content) {
 						textarea.select();
 					}
diff --git a/packages/design-system/src/components/N8nTabs/Tabs.vue b/packages/design-system/src/components/N8nTabs/Tabs.vue
index d6bb756a5f..8735f69e5a 100644
--- a/packages/design-system/src/components/N8nTabs/Tabs.vue
+++ b/packages/design-system/src/components/N8nTabs/Tabs.vue
@@ -51,12 +51,13 @@ export default Vue.extend({
 		N8nIcon,
 	},
 	mounted() {
-		const container = this.$refs.tabs;
+		const container = this.$refs.tabs as HTMLDivElement | undefined;
 		if (container) {
-			container.addEventListener('scroll', (e) => {
+			container.addEventListener('scroll', (event: Event) => {
 				const width = container.clientWidth;
 				const scrollWidth = container.scrollWidth;
-				this.scrollPosition = e.srcElement.scrollLeft;
+				// @ts-ignore
+				this.scrollPosition = event.srcElement.scrollLeft;
 				this.canScrollRight = scrollWidth - width > this.scrollPosition;
 			});
 
@@ -73,13 +74,15 @@ export default Vue.extend({
 		}
 	},
 	destroyed() {
-		this.resizeObserver.disconnect();
+		if (this.resizeObserver) {
+			this.resizeObserver.disconnect();
+		}
 	},
 	data() {
 		return {
 			scrollPosition: 0,
 			canScrollRight: false,
-			resizeObserver: null,
+			resizeObserver: null as ResizeObserver | null,
 		};
 	},
 	props: {
@@ -102,13 +105,16 @@ export default Vue.extend({
 			this.scroll(50);
 		},
 		scroll(left: number) {
-			const container = this.$refs.tabs;
+			const container = this.$refs.tabs as (HTMLDivElement & { scrollBy: ScrollByFunction }) | undefined;
 			if (container) {
 				container.scrollBy({ left, top: 0, behavior: 'smooth' });
 			}
 		},
 	},
 });
+
+type ScrollByFunction = (arg: { left: number, top: number, behavior: 'smooth' | 'instant' | 'auto' }) => void;
+
 </script>
 
 
diff --git a/packages/design-system/src/components/N8nText/Text.vue b/packages/design-system/src/components/N8nText/Text.vue
index 07634cf77a..e4a24b453b 100644
--- a/packages/design-system/src/components/N8nText/Text.vue
+++ b/packages/design-system/src/components/N8nText/Text.vue
@@ -54,7 +54,7 @@ export default Vue.extend({
 
 			applied.push(this.bold? 'bold': 'regular');
 
-			return applied.map((c) => this.$style[c]);
+			return applied.map((c) => (this.$style as { [key: string]: string })[c]);
 		}
 	},
 });
diff --git a/packages/design-system/src/components/N8nTree/Tree.vue b/packages/design-system/src/components/N8nTree/Tree.vue
index d946c40b0d..bf3e0f0bef 100644
--- a/packages/design-system/src/components/N8nTree/Tree.vue
+++ b/packages/design-system/src/components/N8nTree/Tree.vue
@@ -44,7 +44,7 @@ export default Vue.extend({
 		},
 	},
 	methods: {
-		isSimple(data: unkown): boolean {
+		isSimple(data: unknown): boolean {
 			if (data === null || data === undefined) {
 				return true;
 			}
@@ -59,7 +59,7 @@ export default Vue.extend({
 
 			return typeof data !== 'object';
 		},
-		getPath(key: string): string[] {
+		getPath(key: string): unknown[] {
 			if (Array.isArray(this.value)) {
 				return [...this.path, parseInt(key, 10)];
 			}
diff --git a/packages/design-system/src/components/N8nUserSelect/UserSelect.vue b/packages/design-system/src/components/N8nUserSelect/UserSelect.vue
index 097d91cfef..3eca7dfc7e 100644
--- a/packages/design-system/src/components/N8nUserSelect/UserSelect.vue
+++ b/packages/design-system/src/components/N8nUserSelect/UserSelect.vue
@@ -69,8 +69,8 @@ export default mixins(Locale).extend({
 	},
 	computed: {
 		fitleredUsers(): IUser[] {
-			return this.users
-				.filter((user: IUser) => {
+			return (this.users as IUser[])
+				.filter((user) => {
 					if (user.isPendingUser || !user.email) {
 						return false;
 					}
@@ -98,6 +98,10 @@ export default mixins(Locale).extend({
 					return a.firstName > b.firstName? 1 : -1;
 				}
 
+				if (!a.email || !b.email) {
+					throw new Error('Expected all users to have email');
+				}
+
 				return a.email > b.email ? 1 : -1;
 			});
 		},
diff --git a/packages/design-system/src/components/N8nUsersList/UsersList.vue b/packages/design-system/src/components/N8nUsersList/UsersList.vue
index bf211101bf..77b5d8e524 100644
--- a/packages/design-system/src/components/N8nUsersList/UsersList.vue
+++ b/packages/design-system/src/components/N8nUsersList/UsersList.vue
@@ -54,6 +54,10 @@ export default mixins(Locale).extend({
 	computed: {
 		sortedUsers(): IUser[] {
 			return [...(this.users as IUser[])].sort((a: IUser, b: IUser) => {
+				if (!a.email || !b.email) {
+					throw new Error('Expected all users to have email');
+				}
+
 				// invited users sorted by email
 				if (a.isPendingUser && b.isPendingUser) {
 					return a.email > b.email ? 1 : -1;
@@ -87,7 +91,7 @@ export default mixins(Locale).extend({
 		},
 	},
 	methods: {
-		getActions(user: IUser) {
+		getActions(user: IUser): Array<{ label: string, value: string }> {
 			const DELETE = {
 				label: this.t('nds.usersList.deleteUser'),
 				value: 'delete',
diff --git a/packages/design-system/src/components/ResizeObserver/ResizeObserver.vue b/packages/design-system/src/components/ResizeObserver/ResizeObserver.vue
index 459e8106e1..b8fee3b560 100644
--- a/packages/design-system/src/components/ResizeObserver/ResizeObserver.vue
+++ b/packages/design-system/src/components/ResizeObserver/ResizeObserver.vue
@@ -24,7 +24,7 @@ export default Vue.extend({
 			},
 		},
 	},
-	data(): {observer: ResizeObserver | null, width: number | null} {
+	data(): { observer: ResizeObserver | null, bp: string } {
 		return {
 			observer: null,
 			bp: '',
@@ -35,7 +35,9 @@ export default Vue.extend({
 			return;
 		}
 
-		const bps = [...(this.breakpoints || [])].sort((a, b) => a.width - b.width);
+		const unsortedBreakpoints = [...(this.breakpoints || [])] as Array<{ width: number; bp: string }>;
+
+		const bps = unsortedBreakpoints.sort((a, b) => a.width - b.width);
 
 		const observer = new ResizeObserver((entries) => {
 			entries.forEach((entry) => {
@@ -57,7 +59,7 @@ export default Vue.extend({
 		this.$data.observer = observer;
 
 		if (this.$refs.root) {
-			observer.observe(this.$refs.root);
+			observer.observe(this.$refs.root as HTMLDivElement);
 		}
 	},
 	beforeDestroy() {
diff --git a/packages/design-system/src/main.d.ts b/packages/design-system/src/main.d.ts
index 2116dd4bce..9e915359fb 100644
--- a/packages/design-system/src/main.d.ts
+++ b/packages/design-system/src/main.d.ts
@@ -4,6 +4,7 @@ import * as locale from './locale';
 declare module 'vue/types/vue' {
 	interface Vue {
 		$style: Record<string, string>;
+		t: (key: string, options?: object) => string;
 	}
 }
 
diff --git a/packages/design-system/src/shims-element-ui.d.ts b/packages/design-system/src/shims-element-ui.d.ts
index c9e90f3257..890388a8d1 100644
--- a/packages/design-system/src/shims-element-ui.d.ts
+++ b/packages/design-system/src/shims-element-ui.d.ts
@@ -36,3 +36,6 @@ declare module 'element-ui/lib/popover';
 declare module 'element-ui/lib/transitions/collapse-transition';
 declare module 'element-ui/lib/tooltip';
 declare module 'element-ui/lib/input-number';
+declare module 'element-ui/lib/input';
+declare module 'element-ui/lib/skeleton';
+declare module 'element-ui/lib/skeleton-item';
diff --git a/packages/design-system/src/shims-vue2-boring-avatars.d.ts b/packages/design-system/src/shims-vue2-boring-avatars.d.ts
new file mode 100644
index 0000000000..9098a107f1
--- /dev/null
+++ b/packages/design-system/src/shims-vue2-boring-avatars.d.ts
@@ -0,0 +1 @@
+declare module 'vue2-boring-avatars';
diff --git a/packages/design-system/src/types/form.ts b/packages/design-system/src/types/form.ts
index a86bf5ec24..88f458d69c 100644
--- a/packages/design-system/src/types/form.ts
+++ b/packages/design-system/src/types/form.ts
@@ -6,7 +6,7 @@ export type RuleGroup = {
 };
 
 export type IValidator = {
-	validate: (value: string | number | boolean | null | undefined, config: any) => false | {messageKey: string, options?: any}; // tslint:disable-line:no-any
+	validate: (value: string | number | boolean | null | undefined, config: any) => false | {messageKey: string, options?: any} | null; // tslint:disable-line:no-any
 };
 
 
diff --git a/packages/design-system/src/types/user.ts b/packages/design-system/src/types/user.ts
index e1ae11e37a..cf17af3c34 100644
--- a/packages/design-system/src/types/user.ts
+++ b/packages/design-system/src/types/user.ts
@@ -2,7 +2,8 @@ export interface IUser {
 	id: string;
 	firstName?: string;
 	lastName?: string;
+	fullName?: string;
 	email?: string;
-	isPending: boolean;
+	isPendingUser: boolean;
 	isOwner: boolean;
 }
diff --git a/vetur.config.js b/vetur.config.js
index fd1aa02fe5..d9b6fff987 100644
--- a/vetur.config.js
+++ b/vetur.config.js
@@ -1,3 +1,3 @@
 module.exports = {
-	projects: ['./packages/editor-ui'],
+	projects: ['./packages/editor-ui', './packages/design-system'],
 };