diff --git a/packages/bbui/src/ClearButton/ClearButton.svelte b/packages/bbui/src/ClearButton/ClearButton.svelte
index 5a2f6bc04c..720a462546 100644
--- a/packages/bbui/src/ClearButton/ClearButton.svelte
+++ b/packages/bbui/src/ClearButton/ClearButton.svelte
@@ -1,6 +1,6 @@
-<script>
-  export let small = false
-  export let disabled
+<script lang="ts">
+  export let small: boolean = false
+  export let disabled: boolean = false
 </script>
 
 <button
diff --git a/packages/bbui/src/Form/Checkbox.svelte b/packages/bbui/src/Form/Checkbox.svelte
index 6e6cf0d8e8..4a7268f102 100644
--- a/packages/bbui/src/Form/Checkbox.svelte
+++ b/packages/bbui/src/Form/Checkbox.svelte
@@ -1,24 +1,24 @@
-<script>
+<script lang="ts">
   import Field from "./Field.svelte"
   import Checkbox from "./Core/Checkbox.svelte"
   import { createEventDispatcher } from "svelte"
 
-  export let value = null
-  export let label = null
-  export let labelPosition = "above"
-  export let text = null
-  export let disabled = false
-  export let error = null
-  export let size = "M"
-  export let helpText = null
+  export let value: boolean | undefined = undefined
+  export let label: string | undefined = undefined
+  export let labelPosition: "above" | "below" = "above"
+  export let text: string | undefined = undefined
+  export let disabled: boolean = false
+  export let error: string | undefined = undefined
+  export let size: "S" | "M" | "L" | "XL" = "M"
+  export let helpText: string | undefined = undefined
 
   const dispatch = createEventDispatcher()
-  const onChange = e => {
+  const onChange = (e: CustomEvent<boolean>) => {
     value = e.detail
     dispatch("change", e.detail)
   }
 </script>
 
 <Field {helpText} {label} {labelPosition} {error}>
-  <Checkbox {error} {disabled} {text} {value} {size} on:change={onChange} />
+  <Checkbox {disabled} {text} {value} {size} on:change={onChange} />
 </Field>
diff --git a/packages/bbui/src/Link/Link.svelte b/packages/bbui/src/Link/Link.svelte
index 6f8aba1f4e..60706c42cb 100644
--- a/packages/bbui/src/Link/Link.svelte
+++ b/packages/bbui/src/Link/Link.svelte
@@ -10,7 +10,7 @@
   export let secondary: boolean = false
   export let overBackground: boolean = false
   export let target: string | undefined = undefined
-  export let download: boolean | undefined = undefined
+  export let download: string | undefined = undefined
   export let disabled: boolean = false
   export let tooltip: string | null = null
 
diff --git a/packages/bbui/src/SideNavigation/Item.svelte b/packages/bbui/src/SideNavigation/Item.svelte
deleted file mode 100644
index 717a7988b8..0000000000
--- a/packages/bbui/src/SideNavigation/Item.svelte
+++ /dev/null
@@ -1,63 +0,0 @@
-<script>
-  import { getContext } from "svelte"
-
-  const multilevel = getContext("sidenav-type")
-  import Badge from "../Badge/Badge.svelte"
-
-  export let href = ""
-  export let external = false
-  export let heading = ""
-  export let icon = ""
-  export let selected = false
-  export let disabled = false
-  export let badge = ""
-</script>
-
-<!-- svelte-ignore a11y-click-events-have-key-events -->
-<!-- svelte-ignore a11y-no-noninteractive-element-interactions -->
-<li
-  class="spectrum-SideNav-item"
-  class:is-selected={selected}
-  class:is-disabled={disabled}
-  on:click
->
-  {#if heading}
-    <h2 class="spectrum-SideNav-heading" id="nav-heading-{heading}">
-      {heading}
-    </h2>
-  {/if}
-  <a
-    target={external ? "_blank" : ""}
-    {href}
-    class="spectrum-SideNav-itemLink"
-    aria-current="page"
-  >
-    {#if icon}
-      <svg
-        class="spectrum-Icon spectrum-Icon--sizeM spectrum-SideNav-itemIcon"
-        focusable="false"
-        aria-hidden="true"
-      >
-        <use xlink:href="#spectrum-icon-18-{icon}" />
-      </svg>
-    {/if}
-    <slot />
-    {#if badge}
-      <div class="badge">
-        <Badge active size="S">{badge}</Badge>
-      </div>
-    {/if}
-  </a>
-
-  {#if multilevel && $$slots.subnav}
-    <ul class="spectrum-SideNav">
-      <slot name="subnav" />
-    </ul>
-  {/if}
-</li>
-
-<style>
-  .badge {
-    margin-left: 10px;
-  }
-</style>
diff --git a/packages/bbui/src/SideNavigation/Navigation.svelte b/packages/bbui/src/SideNavigation/Navigation.svelte
deleted file mode 100644
index c13b6b56c8..0000000000
--- a/packages/bbui/src/SideNavigation/Navigation.svelte
+++ /dev/null
@@ -1,13 +0,0 @@
-<script>
-  import { setContext } from "svelte"
-  import "@spectrum-css/sidenav/dist/index-vars.css"
-
-  export let multilevel = false
-  setContext("sidenav-type", multilevel)
-</script>
-
-<nav>
-  <ul class="spectrum-SideNav" class:spectrum-SideNav--multiLevel={multilevel}>
-    <slot />
-  </ul>
-</nav>
diff --git a/packages/bbui/src/Stores/banner.js b/packages/bbui/src/Stores/banner.ts
similarity index 57%
rename from packages/bbui/src/Stores/banner.js
rename to packages/bbui/src/Stores/banner.ts
index fc93e7be99..bf70acfa9b 100644
--- a/packages/bbui/src/Stores/banner.js
+++ b/packages/bbui/src/Stores/banner.ts
@@ -7,17 +7,26 @@ export const BANNER_TYPES = {
   WARNING: "warning",
 }
 
+interface BannerConfig {
+  message?: string
+  type?: string
+  extraButtonText?: string
+  extraButtonAction?: () => void
+  onChange?: () => void
+}
+
+interface DefaultConfig {
+  messages: BannerConfig[]
+}
+
 export function createBannerStore() {
-  const DEFAULT_CONFIG = {
+  const DEFAULT_CONFIG: DefaultConfig = {
     messages: [],
   }
 
-  const banner = writable(DEFAULT_CONFIG)
+  const banner = writable<DefaultConfig>(DEFAULT_CONFIG)
 
-  const show = async (
-    // eslint-disable-next-line
-    config = { message, type, extraButtonText, extraButtonAction, onChange }
-  ) => {
+  const show = async (config: BannerConfig = {}) => {
     banner.update(store => {
       return {
         ...store,
@@ -27,7 +36,7 @@ export function createBannerStore() {
   }
 
   const showStatus = async () => {
-    const config = {
+    const config: BannerConfig = {
       message: "Some systems are experiencing issues",
       type: BANNER_TYPES.NEGATIVE,
       extraButtonText: "View Status",
@@ -37,18 +46,24 @@ export function createBannerStore() {
     await queue([config])
   }
 
-  const queue = async entries => {
-    const priority = {
+  const queue = async (entries: Array<BannerConfig>) => {
+    const priority: Record<string, number> = {
       [BANNER_TYPES.NEGATIVE]: 0,
       [BANNER_TYPES.WARNING]: 1,
       [BANNER_TYPES.INFO]: 2,
     }
     banner.update(store => {
       const sorted = [...store.messages, ...entries].sort((a, b) => {
-        if (priority[a.type] == priority[b.type]) {
+        if (
+          priority[a.type as keyof typeof priority] ===
+          priority[b.type as keyof typeof priority]
+        ) {
           return 0
         }
-        return priority[a.type] < priority[b.type] ? -1 : 1
+        return priority[a.type as keyof typeof priority] <
+          priority[b.type as keyof typeof priority]
+          ? -1
+          : 1
       })
       return {
         ...store,
diff --git a/packages/bbui/src/Stores/notifications.js b/packages/bbui/src/Stores/notifications.ts
similarity index 63%
rename from packages/bbui/src/Stores/notifications.js
rename to packages/bbui/src/Stores/notifications.ts
index 28331fffd8..174486e611 100644
--- a/packages/bbui/src/Stores/notifications.js
+++ b/packages/bbui/src/Stores/notifications.ts
@@ -2,9 +2,21 @@ import { writable } from "svelte/store"
 
 const NOTIFICATION_TIMEOUT = 3000
 
+interface Notification {
+  id: string
+  type: string
+  message: string
+  icon: string
+  dismissable: boolean
+  action: (() => void) | null
+  actionMessage: string | null
+  wide: boolean
+  dismissTimeout: number
+}
+
 export const createNotificationStore = () => {
-  const timeoutIds = new Set()
-  const _notifications = writable([], () => {
+  const timeoutIds = new Set<ReturnType<typeof setTimeout>>()
+  const _notifications = writable<Notification[]>([], () => {
     return () => {
       // clear all the timers
       timeoutIds.forEach(timeoutId => {
@@ -21,7 +33,7 @@ export const createNotificationStore = () => {
   }
 
   const send = (
-    message,
+    message: string,
     {
       type = "default",
       icon = "",
@@ -30,7 +42,15 @@ export const createNotificationStore = () => {
       actionMessage = null,
       wide = false,
       dismissTimeout = NOTIFICATION_TIMEOUT,
-    }
+    }: {
+      type?: string
+      icon?: string
+      autoDismiss?: boolean
+      action?: (() => void) | null
+      actionMessage?: string | null
+      wide?: boolean
+      dismissTimeout?: number
+    } = {}
   ) => {
     if (block) {
       return
@@ -60,7 +80,7 @@ export const createNotificationStore = () => {
     }
   }
 
-  const dismissNotification = id => {
+  const dismissNotification = (id: string) => {
     _notifications.update(state => {
       return state.filter(n => n.id !== id)
     })
@@ -71,17 +91,18 @@ export const createNotificationStore = () => {
   return {
     subscribe,
     send,
-    info: msg => send(msg, { type: "info", icon: "Info" }),
-    error: msg =>
+    info: (msg: string) => send(msg, { type: "info", icon: "Info" }),
+    error: (msg: string) =>
       send(msg, { type: "error", icon: "Alert", autoDismiss: false }),
-    warning: msg => send(msg, { type: "warning", icon: "Alert" }),
-    success: msg => send(msg, { type: "success", icon: "CheckmarkCircle" }),
+    warning: (msg: string) => send(msg, { type: "warning", icon: "Alert" }),
+    success: (msg: string) =>
+      send(msg, { type: "success", icon: "CheckmarkCircle" }),
     blockNotifications,
     dismiss: dismissNotification,
   }
 }
 
-function id() {
+function id(): string {
   return "_" + Math.random().toString(36).slice(2, 9)
 }
 
diff --git a/packages/bbui/src/Table/ArrayRenderer.svelte b/packages/bbui/src/Table/ArrayRenderer.svelte
index 303397054a..8dc23d8604 100644
--- a/packages/bbui/src/Table/ArrayRenderer.svelte
+++ b/packages/bbui/src/Table/ArrayRenderer.svelte
@@ -1,8 +1,8 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/label/dist/index-vars.css"
   import Badge from "../Badge/Badge.svelte"
 
-  export let value
+  export let value: string | string[]
 
   const displayLimit = 5
 
diff --git a/packages/bbui/src/Table/AttachmentRenderer.svelte b/packages/bbui/src/Table/AttachmentRenderer.svelte
index b4de8672ae..550ae11e8b 100644
--- a/packages/bbui/src/Table/AttachmentRenderer.svelte
+++ b/packages/bbui/src/Table/AttachmentRenderer.svelte
@@ -1,15 +1,15 @@
-<script>
+<script lang="ts">
   import Link from "../Link/Link.svelte"
 
-  export let value
+  export let value: { name: string; url: string; extension: string }[]
 
   const displayLimit = 5
   $: attachments = value?.slice(0, displayLimit) ?? []
   $: leftover = (value?.length ?? 0) - attachments.length
 
-  const imageExtensions = ["png", "tiff", "gif", "raw", "jpg", "jpeg"]
-  const isImage = extension => {
-    return imageExtensions.includes(extension?.toLowerCase())
+  const imageExtensions: string[] = ["png", "tiff", "gif", "raw", "jpg", "jpeg"]
+  const isImage = (extension: string | undefined): boolean => {
+    return imageExtensions.includes(extension?.toLowerCase() ?? "")
   }
 </script>
 
diff --git a/packages/bbui/src/Table/BoldRenderer.svelte b/packages/bbui/src/Table/BoldRenderer.svelte
index ae9ca24c42..93df68d2dc 100644
--- a/packages/bbui/src/Table/BoldRenderer.svelte
+++ b/packages/bbui/src/Table/BoldRenderer.svelte
@@ -1,5 +1,5 @@
-<script>
-  export let value
+<script lang="ts">
+  export let value: string
 </script>
 
 <div class="bold">{value}</div>
diff --git a/packages/bbui/src/Table/BooleanRenderer.svelte b/packages/bbui/src/Table/BooleanRenderer.svelte
index 4e1aa3b4e1..0f4f7b2d68 100644
--- a/packages/bbui/src/Table/BooleanRenderer.svelte
+++ b/packages/bbui/src/Table/BooleanRenderer.svelte
@@ -1,7 +1,7 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/checkbox/dist/index-vars.css"
 
-  export let value
+  export let value: boolean
 </script>
 
 <label
diff --git a/packages/bbui/src/Table/CellRenderer.svelte b/packages/bbui/src/Table/CellRenderer.svelte
index eff1178f6d..e93eae3ca3 100644
--- a/packages/bbui/src/Table/CellRenderer.svelte
+++ b/packages/bbui/src/Table/CellRenderer.svelte
@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
   import StringRenderer from "./StringRenderer.svelte"
   import BooleanRenderer from "./BooleanRenderer.svelte"
   import DateTimeRenderer from "./DateTimeRenderer.svelte"
@@ -8,14 +8,14 @@
   import InternalRenderer from "./InternalRenderer.svelte"
   import { processStringSync } from "@budibase/string-templates"
 
-  export let row
-  export let schema
-  export let value
-  export let customRenderers = []
-  export let snippets
+  export let row: Record<string, any>
+  export let schema: Record<string, any>
+  export let value: Record<string, any>
+  export let customRenderers: { column: string; component: any }[] = []
+  export let snippets: any
 
-  let renderer
-  const typeMap = {
+  let renderer: any
+  const typeMap: Record<string, any> = {
     boolean: BooleanRenderer,
     datetime: DateTimeRenderer,
     link: RelationshipRenderer,
@@ -33,7 +33,7 @@
   $: renderer = customRenderer?.component ?? typeMap[type] ?? StringRenderer
   $: cellValue = getCellValue(value, schema.template)
 
-  const getType = schema => {
+  const getType = (schema: any): string => {
     // Use a string renderer for dates if we use a custom template
     if (schema?.type === "datetime" && schema?.template) {
       return "string"
@@ -41,7 +41,7 @@
     return schema?.type || "string"
   }
 
-  const getCellValue = (value, template) => {
+  const getCellValue = (value: any, template: string | undefined): any => {
     if (!template) {
       return value
     }
diff --git a/packages/bbui/src/Table/CodeRenderer.svelte b/packages/bbui/src/Table/CodeRenderer.svelte
index 5658851197..a16352e1a6 100644
--- a/packages/bbui/src/Table/CodeRenderer.svelte
+++ b/packages/bbui/src/Table/CodeRenderer.svelte
@@ -1,5 +1,5 @@
-<script>
-  export let value
+<script lang="ts">
+  export let value: string
 </script>
 
 <code>{value}</code>
diff --git a/packages/bbui/src/Table/DateTimeRenderer.svelte b/packages/bbui/src/Table/DateTimeRenderer.svelte
index f4b0821069..7e4d85cab1 100644
--- a/packages/bbui/src/Table/DateTimeRenderer.svelte
+++ b/packages/bbui/src/Table/DateTimeRenderer.svelte
@@ -1,13 +1,13 @@
-<script>
+<script lang="ts">
   import dayjs from "dayjs"
 
-  export let value
-  export let schema
+  export let value: string | Date
+  export let schema: { timeOnly?: boolean; dateOnly?: boolean }
 
   // adding the 0- will turn a string like 00:00:00 into a valid ISO
   // date, but will make actual ISO dates invalid
   $: time = new Date(`0-${value}`)
-  $: isTimeOnly = !isNaN(time) || schema?.timeOnly
+  $: isTimeOnly = !isNaN(time as any) || schema?.timeOnly
   $: isDateOnly = schema?.dateOnly
   $: format = isTimeOnly
     ? "HH:mm:ss"
diff --git a/packages/bbui/src/Table/InternalRenderer.svelte b/packages/bbui/src/Table/InternalRenderer.svelte
index 9a09f5c601..56adebbe1e 100644
--- a/packages/bbui/src/Table/InternalRenderer.svelte
+++ b/packages/bbui/src/Table/InternalRenderer.svelte
@@ -1,11 +1,11 @@
-<script>
+<script lang="ts">
   import Icon from "../Icon/Icon.svelte"
   import { copyToClipboard } from "../helpers"
   import { notifications } from "../Stores/notifications"
 
-  export let value
+  export let value: string
 
-  const onClick = async e => {
+  const onClick = async (e: MouseEvent): Promise<void> => {
     e.stopPropagation()
     try {
       await copyToClipboard(value)
diff --git a/packages/bbui/src/Table/RelationshipRenderer.svelte b/packages/bbui/src/Table/RelationshipRenderer.svelte
index b70eaeb07d..0a4c37aa51 100644
--- a/packages/bbui/src/Table/RelationshipRenderer.svelte
+++ b/packages/bbui/src/Table/RelationshipRenderer.svelte
@@ -1,11 +1,11 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/label/dist/index-vars.css"
   import { createEventDispatcher } from "svelte"
   import Badge from "../Badge/Badge.svelte"
 
-  export let row
-  export let value
-  export let schema
+  export let row: { tableId: string; _id: string }
+  export let value: { primaryDisplay?: string }[] | undefined
+  export let schema: { name?: string }
 
   const dispatch = createEventDispatcher()
   const displayLimit = 5
@@ -13,7 +13,7 @@
   $: relationships = value?.slice(0, displayLimit) ?? []
   $: leftover = (value?.length ?? 0) - relationships.length
 
-  const onClick = e => {
+  const onClick = (e: MouseEvent) => {
     e.stopPropagation()
     dispatch("clickrelationship", {
       tableId: row.tableId,
diff --git a/packages/bbui/src/Table/SelectEditRenderer.svelte b/packages/bbui/src/Table/SelectEditRenderer.svelte
index 0c88fa3167..75ae183333 100644
--- a/packages/bbui/src/Table/SelectEditRenderer.svelte
+++ b/packages/bbui/src/Table/SelectEditRenderer.svelte
@@ -1,12 +1,12 @@
-<script>
+<script lang="ts">
   import Checkbox from "../Form/Checkbox.svelte"
   import ActionButton from "../ActionButton/ActionButton.svelte"
 
-  export let selected
-  export let onEdit
-  export let allowSelectRows = false
-  export let allowEditRows = false
-  export let data
+  export let selected: boolean | undefined
+  export let onEdit: (_e: Event) => void
+  export let allowSelectRows: boolean = false
+  export let allowEditRows: boolean = false
+  export let data: Record<string, any>
 </script>
 
 <div>
diff --git a/packages/bbui/src/Table/StringRenderer.svelte b/packages/bbui/src/Table/StringRenderer.svelte
index fd7ff3bcda..00516480bf 100644
--- a/packages/bbui/src/Table/StringRenderer.svelte
+++ b/packages/bbui/src/Table/StringRenderer.svelte
@@ -1,6 +1,6 @@
-<script>
-  export let value
-  export let schema
+<script lang="ts">
+  export let value: string | object
+  export let schema: { capitalise?: boolean }
 </script>
 
 <div class:capitalise={schema?.capitalise}>
diff --git a/packages/bbui/src/Table/Table.svelte b/packages/bbui/src/Table/Table.svelte
index 228838e477..530d729a35 100644
--- a/packages/bbui/src/Table/Table.svelte
+++ b/packages/bbui/src/Table/Table.svelte
@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
   import { createEventDispatcher } from "svelte"
   import "@spectrum-css/table/dist/index-vars.css"
   import CellRenderer from "./CellRenderer.svelte"
@@ -8,6 +8,7 @@
   import Checkbox from "../Form/Checkbox.svelte"
 
   /**
+   /**
    * The expected schema is our normal couch schemas for our tables.
    * Each field schema can be enriched with a few extra properties to customise
    * the behaviour.
@@ -24,42 +25,42 @@
    * borderLeft: show a left border
    * borderRight: show a right border
    */
-  export let data = []
-  export let schema = {}
-  export let showAutoColumns = false
-  export let rowCount = 0
-  export let quiet = false
-  export let loading = false
-  export let allowSelectRows
-  export let allowEditRows = true
-  export let allowEditColumns = true
-  export let allowClickRows = true
-  export let selectedRows = []
-  export let customRenderers = []
-  export let disableSorting = false
-  export let autoSortColumns = true
-  export let compact = false
-  export let customPlaceholder = false
-  export let showHeaderBorder = true
-  export let placeholderText = "No rows found"
-  export let snippets = []
-  export let defaultSortColumn = undefined
-  export let defaultSortOrder = "Ascending"
+  export let data: any[] = []
+  export let schema: Record<string, any> = {}
+  export let showAutoColumns: boolean = false
+  export let rowCount: number = 0
+  export let quiet: boolean = false
+  export let loading: boolean = false
+  export let allowSelectRows: boolean = false
+  export let allowEditRows: boolean = true
+  export let allowEditColumns: boolean = true
+  export let allowClickRows: boolean = true
+  export let selectedRows: any[] = []
+  export let customRenderers: any[] = []
+  export let disableSorting: boolean = false
+  export let autoSortColumns: boolean = true
+  export let compact: boolean = false
+  export let customPlaceholder: boolean = false
+  export let showHeaderBorder: boolean = true
+  export let placeholderText: string = "No rows found"
+  export let snippets: any[] = []
+  export let defaultSortColumn: string | undefined = undefined
+  export let defaultSortOrder: "Ascending" | "Descending" = "Ascending"
 
   const dispatch = createEventDispatcher()
 
   // Config
-  const headerHeight = 36
+  const headerHeight: number = 36
   $: rowHeight = compact ? 46 : 55
 
   // Sorting state
-  let sortColumn
-  let sortOrder
+  let sortColumn: string | undefined
+  let sortOrder: "Ascending" | "Descending" | undefined
 
   // Table state
-  let height = 0
-  let loaded = false
-  let checkboxStatus = false
+  let height: number = 0
+  let loaded: boolean = false
+  let checkboxStatus: boolean = false
 
   $: schema = fixSchema(schema)
   $: if (!loading) loaded = true
@@ -95,8 +96,8 @@
     }
   }
 
-  const fixSchema = schema => {
-    let fixedSchema = {}
+  const fixSchema = (schema: Record<string, any>): Record<string, any> => {
+    let fixedSchema: Record<string, any> = {}
     Object.entries(schema || {}).forEach(([fieldName, fieldSchema]) => {
       if (typeof fieldSchema === "string") {
         fixedSchema[fieldName] = {
@@ -120,7 +121,13 @@
     return fixedSchema
   }
 
-  const getVisibleRowCount = (loaded, height, allRows, rowCount, rowHeight) => {
+  const getVisibleRowCount = (
+    loaded: boolean,
+    height: number,
+    allRows: number,
+    rowCount: number,
+    rowHeight: number
+  ): number => {
     if (!loaded) {
       return rowCount || 0
     }
@@ -131,12 +138,12 @@
   }
 
   const getHeightStyle = (
-    visibleRowCount,
-    rowCount,
-    totalRowCount,
-    rowHeight,
-    loading
-  ) => {
+    visibleRowCount: number,
+    rowCount: number,
+    totalRowCount: number,
+    rowHeight: number,
+    loading: boolean
+  ): string => {
     if (loading) {
       return `height: ${headerHeight + visibleRowCount * rowHeight}px;`
     }
@@ -146,7 +153,11 @@
     return `height: ${headerHeight + visibleRowCount * rowHeight}px;`
   }
 
-  const getGridStyle = (fields, schema, showEditColumn) => {
+  const getGridStyle = (
+    fields: string[],
+    schema: Record<string, any>,
+    showEditColumn: boolean
+  ): string => {
     let style = "grid-template-columns:"
     if (showEditColumn) {
       style += " auto"
@@ -163,7 +174,11 @@
     return style
   }
 
-  const sortRows = (rows, sortColumn, sortOrder) => {
+  const sortRows = (
+    rows: any[],
+    sortColumn: string | undefined,
+    sortOrder: string | undefined
+  ): any[] => {
     sortColumn = sortColumn ?? defaultSortColumn
     sortOrder = sortOrder ?? defaultSortOrder
     if (!sortColumn || !sortOrder || disableSorting) {
@@ -180,7 +195,7 @@
     })
   }
 
-  const sortBy = fieldSchema => {
+  const sortBy = (fieldSchema: Record<string, any>): void => {
     if (fieldSchema.sortable === false) {
       return
     }
@@ -193,7 +208,7 @@
     dispatch("sort", { column: sortColumn, order: sortOrder })
   }
 
-  const getDisplayName = schema => {
+  const getDisplayName = (schema: Record<string, any>): string => {
     let name = schema?.displayName
     if (schema && name === undefined) {
       name = schema.name
@@ -201,9 +216,13 @@
     return name || ""
   }
 
-  const getFields = (schema, showAutoColumns, autoSortColumns) => {
-    let columns = []
-    let autoColumns = []
+  const getFields = (
+    schema: Record<string, any>,
+    showAutoColumns: boolean,
+    autoSortColumns: boolean
+  ): string[] => {
+    let columns: any[] = []
+    let autoColumns: any[] = []
     Object.entries(schema || {}).forEach(([field, fieldSchema]) => {
       if (!field || !fieldSchema) {
         return
@@ -235,17 +254,17 @@
       .map(column => column.name)
   }
 
-  const editColumn = (e, field) => {
+  const editColumn = (e: Event, field: any): void => {
     e.stopPropagation()
     dispatch("editcolumn", field)
   }
 
-  const editRow = (e, row) => {
+  const editRow = (e: Event, row: any): void => {
     e.stopPropagation()
     dispatch("editrow", cloneDeep(row))
   }
 
-  const toggleSelectRow = row => {
+  const toggleSelectRow = (row: any): void => {
     if (!allowSelectRows) {
       return
     }
@@ -258,7 +277,7 @@
     }
   }
 
-  const toggleSelectAll = e => {
+  const toggleSelectAll = (e: CustomEvent): void => {
     const select = !!e.detail
     if (select) {
       // Add any rows which are not already in selected rows
@@ -278,8 +297,10 @@
     }
   }
 
-  const computeCellStyles = schema => {
-    let styles = {}
+  const computeCellStyles = (
+    schema: Record<string, any>
+  ): Record<string, string> => {
+    let styles: Record<string, string> = {}
     Object.keys(schema || {}).forEach(field => {
       styles[field] = ""
       if (schema[field].color) {
diff --git a/packages/bbui/src/Table/index.js b/packages/bbui/src/Table/index.ts
similarity index 100%
rename from packages/bbui/src/Table/index.js
rename to packages/bbui/src/Table/index.ts
diff --git a/packages/bbui/src/Tabs/Tabs.svelte b/packages/bbui/src/Tabs/Tabs.svelte
index 3955145ad1..2af2d07558 100644
--- a/packages/bbui/src/Tabs/Tabs.svelte
+++ b/packages/bbui/src/Tabs/Tabs.svelte
@@ -1,28 +1,48 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/tabs/dist/index-vars.css"
   import { writable } from "svelte/store"
   import { onMount, setContext, createEventDispatcher } from "svelte"
 
-  export let selected
-  export let vertical = false
-  export let noPadding = false
-  // added as a separate option as noPadding is used for vertical padding
-  export let noHorizPadding = false
-  export let quiet = false
-  export let emphasized = false
-  export let onTop = false
-  export let size = "M"
-  export let beforeSwitch = null
+  interface TabInfo {
+    width?: number
+    height?: number
+    left?: number
+    top?: number
+  }
 
-  let thisSelected = undefined
+  interface TabState {
+    title: string
+    id: string
+    emphasized: boolean
+    info?: TabInfo
+  }
+
+  export let selected: string
+  export let vertical: boolean = false
+  export let noPadding: boolean = false
+  // added as a separate option as noPadding is used for vertical padding
+  export let noHorizPadding: boolean = false
+  export let quiet: boolean = false
+  export let emphasized: boolean = false
+  export let onTop: boolean = false
+  export let size: "S" | "M" | "L" = "M"
+  export let beforeSwitch: ((_title: string) => boolean) | null = null
+
+  let thisSelected: string | undefined = undefined
+  let container: HTMLElement | undefined
 
   let _id = id()
-  const tab = writable({ title: selected, id: _id, emphasized })
+  const tab = writable<TabState>({ title: selected, id: _id, emphasized })
   setContext("tab", tab)
 
-  let container
+  let top: string | undefined
+  let left: string | undefined
+  let width: string | undefined
+  let height: string | undefined
 
-  const dispatch = createEventDispatcher()
+  const dispatch = createEventDispatcher<{
+    select: string
+  }>()
 
   $: {
     if (thisSelected !== selected) {
@@ -44,29 +64,34 @@
     }
     if ($tab.title !== thisSelected) {
       tab.update(state => {
-        state.title = thisSelected
+        state.title = thisSelected as string
         return state
       })
     }
   }
 
-  let top, left, width, height
-  $: calculateIndicatorLength($tab)
-  $: calculateIndicatorOffset($tab)
+  $: $tab && calculateIndicatorLength()
+  $: $tab && calculateIndicatorOffset()
 
   function calculateIndicatorLength() {
     if (!vertical) {
-      width = $tab.info?.width + "px"
+      width = ($tab.info?.width ?? 0) + "px"
     } else {
-      height = $tab.info?.height + 4 + "px"
+      height = ($tab.info?.height ?? 0) + 4 + "px"
     }
   }
 
   function calculateIndicatorOffset() {
     if (!vertical) {
-      left = $tab.info?.left - container?.getBoundingClientRect().left + "px"
+      left =
+        ($tab.info?.left ?? 0) -
+        (container?.getBoundingClientRect().left ?? 0) +
+        "px"
     } else {
-      top = $tab.info?.top - container?.getBoundingClientRect().top + "px"
+      top =
+        ($tab.info?.top ?? 0) -
+        (container?.getBoundingClientRect().top ?? 0) +
+        "px"
     }
   }
 
@@ -75,7 +100,7 @@
     calculateIndicatorOffset()
   })
 
-  function id() {
+  function id(): string {
     return "_" + Math.random().toString(36).slice(2, 9)
   }
 </script>
diff --git a/packages/bbui/src/Tags/Tag.svelte b/packages/bbui/src/Tags/Tag.svelte
index 0cdd6c385d..d10459435b 100644
--- a/packages/bbui/src/Tags/Tag.svelte
+++ b/packages/bbui/src/Tags/Tag.svelte
@@ -1,13 +1,13 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/tags/dist/index-vars.css"
   import Avatar from "../Avatar/Avatar.svelte"
   import ClearButton from "../ClearButton/ClearButton.svelte"
 
-  export let icon = ""
-  export let avatar = ""
-  export let invalid = false
-  export let disabled = false
-  export let closable = false
+  export let icon: string = ""
+  export let avatar: string = ""
+  export let invalid: boolean = false
+  export let disabled: boolean = false
+  export let closable: boolean = false
 </script>
 
 <div
diff --git a/packages/bbui/src/Tags/Tags.svelte b/packages/bbui/src/Tags/Tags.svelte
index ebca64b774..c095f4103c 100644
--- a/packages/bbui/src/Tags/Tags.svelte
+++ b/packages/bbui/src/Tags/Tags.svelte
@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/tags/dist/index-vars.css"
 </script>
 
diff --git a/packages/bbui/src/Tooltip/TooltipWrapper.svelte b/packages/bbui/src/Tooltip/TooltipWrapper.svelte
index 8d12b88086..cfebd6625e 100644
--- a/packages/bbui/src/Tooltip/TooltipWrapper.svelte
+++ b/packages/bbui/src/Tooltip/TooltipWrapper.svelte
@@ -1,10 +1,10 @@
-<script>
+<script lang="ts">
   import Icon from "../Icon/Icon.svelte"
   import AbsTooltip from "./AbsTooltip.svelte"
 
-  export let tooltip = ""
-  export let size = "M"
-  export let disabled = true
+  export let tooltip: string = ""
+  export let size: "S" | "M" = "M"
+  export let disabled: boolean = true
 </script>
 
 <div class:container={!!tooltip}>
diff --git a/packages/bbui/src/TreeView/Item.svelte b/packages/bbui/src/TreeView/Item.svelte
index 104c392b65..0d414e7fa2 100644
--- a/packages/bbui/src/TreeView/Item.svelte
+++ b/packages/bbui/src/TreeView/Item.svelte
@@ -1,9 +1,9 @@
-<script>
-  export let selected = false
-  export let open = false
-  export let href = false
-  export let title
-  export let icon
+<script lang="ts">
+  export let selected: boolean = false
+  export let open: boolean = false
+  export let href: string | null = null
+  export let title: string
+  export let icon: string | undefined
 </script>
 
 <li
diff --git a/packages/bbui/src/TreeView/Tree.svelte b/packages/bbui/src/TreeView/Tree.svelte
index cecc357243..34eaf5aad5 100644
--- a/packages/bbui/src/TreeView/Tree.svelte
+++ b/packages/bbui/src/TreeView/Tree.svelte
@@ -1,9 +1,9 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/treeview/dist/index-vars.css"
 
-  export let quiet = false
-  export let standalone = true
-  export let width = "250px"
+  export let quiet: boolean = false
+  export let standalone: boolean = true
+  export let width: string = "250px"
 </script>
 
 <ul
diff --git a/packages/bbui/src/Typography/Code.svelte b/packages/bbui/src/Typography/Code.svelte
index ebb100a108..c6a91162ff 100644
--- a/packages/bbui/src/Typography/Code.svelte
+++ b/packages/bbui/src/Typography/Code.svelte
@@ -1,8 +1,8 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/typography/dist/index-vars.css"
 
   // Sizes
-  export let size = "M"
+  export let size: "S" | "M" | "L" = "M"
 </script>
 
 <code class="spectrum-Code spectrum-Code--size{size}">
diff --git a/packages/bbui/src/Typography/Detail.svelte b/packages/bbui/src/Typography/Detail.svelte
index 80e5e1cbe9..dfec234e10 100644
--- a/packages/bbui/src/Typography/Detail.svelte
+++ b/packages/bbui/src/Typography/Detail.svelte
@@ -1,9 +1,9 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/typography/dist/index-vars.css"
 
-  export let size = "M"
-  export let serif = false
-  export let weight = 600
+  export let size: "S" | "M" | "L" = "M"
+  export let serif: boolean = false
+  export let weight: number | null = null
 </script>
 
 <p
diff --git a/packages/bbui/src/index.ts b/packages/bbui/src/index.ts
index 2809cbf99f..b0b52c1722 100644
--- a/packages/bbui/src/index.ts
+++ b/packages/bbui/src/index.ts
@@ -65,8 +65,6 @@ export { default as Modal } from "./Modal/Modal.svelte"
 export { default as ModalContent, keepOpen } from "./Modal/ModalContent.svelte"
 export { default as NotificationDisplay } from "./Notification/NotificationDisplay.svelte"
 export { default as Notification } from "./Notification/Notification.svelte"
-export { default as SideNavigation } from "./SideNavigation/Navigation.svelte"
-export { default as SideNavigationItem } from "./SideNavigation/Item.svelte"
 export { default as Context } from "./context"
 export { default as Table } from "./Table/Table.svelte"
 export { default as Tabs } from "./Tabs/Tabs.svelte"