diff --git a/.eslintrc.json b/.eslintrc.json
index a94ea877047..4e6a169dae9 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -27,9 +27,8 @@
       "extends": "plugin:svelte/recommended",
       "parser": "svelte-eslint-parser",
       "parserOptions": {
-        "parser": "@babel/eslint-parser",
+        "parser": "@typescript-eslint/parser",
         "ecmaVersion": 2019,
-        "sourceType": "module",
         "allowImportExportEverywhere": true
       }
     },
diff --git a/packages/bbui/src/Button/Button.svelte b/packages/bbui/src/Button/Button.svelte
index 0a8917c3c1a..77653d0c426 100644
--- a/packages/bbui/src/Button/Button.svelte
+++ b/packages/bbui/src/Button/Button.svelte
@@ -3,7 +3,7 @@
   import AbsTooltip from "../Tooltip/AbsTooltip.svelte"
   import { createEventDispatcher } from "svelte"
 
-  export let type
+  export let type = undefined
   export let disabled = false
   export let size = "M"
   export let cta = false
@@ -16,8 +16,8 @@
   export let active = false
   export let tooltip = undefined
   export let newStyles = true
-  export let id
-  export let ref
+  export let id = undefined
+  export let ref = undefined
   export let reverse = false
 
   const dispatch = createEventDispatcher()
diff --git a/packages/bbui/src/Form/Core/DateRangePicker.svelte b/packages/bbui/src/Form/Core/DateRangePicker.svelte
index 9084942ba71..72180a98d69 100644
--- a/packages/bbui/src/Form/Core/DateRangePicker.svelte
+++ b/packages/bbui/src/Form/Core/DateRangePicker.svelte
@@ -2,13 +2,6 @@
   import CoreDatePicker from "./DatePicker/DatePicker.svelte"
   import Icon from "../../Icon/Icon.svelte"
 
-  export let value = null
-  export let disabled = false
-  export let readonly = false
-  export let error = null
-  export let appendTo = undefined
-  export let ignoreTimezones = false
-
   let fromDate
   let toDate
 </script>
diff --git a/packages/bbui/src/Form/Search.svelte b/packages/bbui/src/Form/Search.svelte
index 2fbda275ebf..a085986d3ed 100644
--- a/packages/bbui/src/Form/Search.svelte
+++ b/packages/bbui/src/Form/Search.svelte
@@ -10,7 +10,7 @@
   export let disabled = false
   export let updateOnChange = true
   export let quiet = false
-  export let inputRef
+  export let inputRef = undefined
   export let helpText = null
 
   const dispatch = createEventDispatcher()
diff --git a/packages/bbui/src/Form/Select.svelte b/packages/bbui/src/Form/Select.svelte
index 260090c7b72..0e67a1f5327 100644
--- a/packages/bbui/src/Form/Select.svelte
+++ b/packages/bbui/src/Form/Select.svelte
@@ -17,18 +17,18 @@
   export let getOptionIcon = option => option?.icon
   export let getOptionColour = option => option?.colour
   export let useOptionIconImage = false
-  export let isOptionEnabled
+  export let isOptionEnabled = undefined
   export let quiet = false
   export let autoWidth = false
   export let sort = false
   export let tooltip = ""
   export let autocomplete = false
-  export let customPopoverHeight
-  export let align
+  export let customPopoverHeight = undefined
+  export let align = undefined
   export let footer = null
   export let tag = null
   export let helpText = null
-  export let compare
+  export let compare = undefined
   export let onOptionMouseenter = () => {}
   export let onOptionMouseleave = () => {}
 
diff --git a/packages/bbui/src/Table/Table.svelte b/packages/bbui/src/Table/Table.svelte
index 3916bec7388..228838e477b 100644
--- a/packages/bbui/src/Table/Table.svelte
+++ b/packages/bbui/src/Table/Table.svelte
@@ -43,7 +43,7 @@
   export let showHeaderBorder = true
   export let placeholderText = "No rows found"
   export let snippets = []
-  export let defaultSortColumn
+  export let defaultSortColumn = undefined
   export let defaultSortOrder = "Ascending"
 
   const dispatch = createEventDispatcher()
diff --git a/packages/bbui/src/Typography/Heading.svelte b/packages/bbui/src/Typography/Heading.svelte
index 50522fffc32..90d53fb2083 100644
--- a/packages/bbui/src/Typography/Heading.svelte
+++ b/packages/bbui/src/Typography/Heading.svelte
@@ -1,9 +1,9 @@
-<script>
+<script lang="ts">
   import "@spectrum-css/typography/dist/index-vars.css"
 
   // Sizes
   export let size = "M"
-  export let textAlign
+  export let textAlign = undefined
   export let noPadding = false
   export let weight = "default" // light, heavy, default
 </script>
diff --git a/packages/builder/.gitignore b/packages/builder/.gitignore
index abc5671984e..e5c961d5091 100644
--- a/packages/builder/.gitignore
+++ b/packages/builder/.gitignore
@@ -5,5 +5,4 @@ package-lock.json
 release/
 dist/
 routify
-.routify/
-svelte.config.js
\ No newline at end of file
+.routify/
\ No newline at end of file
diff --git a/packages/builder/package.json b/packages/builder/package.json
index 46e454f5b97..fd819b8a9c8 100644
--- a/packages/builder/package.json
+++ b/packages/builder/package.json
@@ -4,7 +4,8 @@
   "license": "GPL-3.0",
   "private": true,
   "scripts": {
-    "build": "routify -b && vite build --emptyOutDir",
+    "svelte-check": "svelte-check --no-tsconfig",
+    "build": "yarn svelte-check && routify -b && vite build --emptyOutDir",
     "start": "routify -c rollup",
     "dev": "routify -c dev:vite",
     "dev:vite": "vite --host 0.0.0.0",
@@ -97,6 +98,7 @@
     "jest": "29.7.0",
     "jsdom": "^21.1.1",
     "resize-observer-polyfill": "^1.5.1",
+    "svelte-check": "^4.1.0",
     "svelte-jester": "^1.3.2",
     "vite": "^4.5.0",
     "vite-plugin-static-copy": "^0.17.0",
diff --git a/packages/builder/src/pages/builder/app/[application]/data/datasource/[datasourceId]/index.svelte b/packages/builder/src/pages/builder/app/[application]/data/datasource/[datasourceId]/index.svelte
index b7237886955..3757ed7dee5 100644
--- a/packages/builder/src/pages/builder/app/[application]/data/datasource/[datasourceId]/index.svelte
+++ b/packages/builder/src/pages/builder/app/[application]/data/datasource/[datasourceId]/index.svelte
@@ -117,7 +117,4 @@
     align-items: center;
     margin-bottom: 12px;
   }
-
-  .tabs {
-  }
 </style>
diff --git a/packages/builder/src/pages/builder/app/[application]/design/[screenId]/_components/ComponentList/DNDPositionIndicator.svelte b/packages/builder/src/pages/builder/app/[application]/design/[screenId]/_components/ComponentList/DNDPositionIndicator.svelte
index 4612440a2c5..45185d8e2de 100644
--- a/packages/builder/src/pages/builder/app/[application]/design/[screenId]/_components/ComponentList/DNDPositionIndicator.svelte
+++ b/packages/builder/src/pages/builder/app/[application]/design/[screenId]/_components/ComponentList/DNDPositionIndicator.svelte
@@ -50,8 +50,6 @@
     border-radius: 4px;
     pointer-events: none;
   }
-  .indicator.above {
-  }
   .indicator.below {
     margin-top: 32px;
   }
diff --git a/packages/builder/src/pages/builder/portal/plugins/index.svelte b/packages/builder/src/pages/builder/portal/plugins/index.svelte
index d8dd4eae114..e16da42e102 100644
--- a/packages/builder/src/pages/builder/portal/plugins/index.svelte
+++ b/packages/builder/src/pages/builder/portal/plugins/index.svelte
@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
   import {
     Layout,
     Heading,
@@ -42,23 +42,25 @@
     { column: "edit", component: EditPluginRenderer },
   ]
 
-  let modal
-  let searchTerm = ""
-  let filter = "all"
+  let modal: any
+  let searchTerm: any = ""
+  let filter: any = "all"
   let filterOptions = [
     { label: "All plugins", value: "all" },
     { label: "Components", value: "component" },
   ]
 
+  const searchPlaceholder: any = "Search"
+
   if (!$admin.cloud) {
     filterOptions.push({ label: "Datasources", value: "datasource" })
   }
 
   $: filteredPlugins = $plugins
-    .filter(plugin => {
+    .filter((plugin: any) => {
       return filter === "all" || plugin.schema.type === filter
     })
-    .filter(plugin => {
+    .filter((plugin: any) => {
       return (
         !searchTerm ||
         plugin?.name?.toLowerCase().includes(searchTerm.toLowerCase())
@@ -85,8 +87,8 @@
           <Button
             on:click={() =>
               window
-                .open("https://github.com/Budibase/plugins", "_blank")
-                .focus()}
+                ?.open("https://github.com/Budibase/plugins", "_blank")
+                ?.focus()}
             secondary
           >
             GitHub repo
@@ -98,12 +100,12 @@
           <div class="select">
             <Select
               bind:value={filter}
-              placeholder={null}
+              placeholder={undefined}
               options={filterOptions}
               autoWidth
             />
           </div>
-          <Search bind:value={searchTerm} placeholder="Search" />
+          <Search bind:value={searchTerm} placeholder={searchPlaceholder} />
         </div>
       {/if}
     </div>
diff --git a/packages/builder/svelte.config.js b/packages/builder/svelte.config.js
new file mode 100644
index 00000000000..7d908c15d53
--- /dev/null
+++ b/packages/builder/svelte.config.js
@@ -0,0 +1,7 @@
+const { vitePreprocess } = require("@sveltejs/vite-plugin-svelte")
+
+const config = {
+  preprocess: vitePreprocess(),
+}
+
+module.exports = config
diff --git a/packages/client/src/components/app/charts/AreaChart.svelte b/packages/client/src/components/app/charts/AreaChart.svelte
index 051601b245c..556e0a61d44 100644
--- a/packages/client/src/components/app/charts/AreaChart.svelte
+++ b/packages/client/src/components/app/charts/AreaChart.svelte
@@ -18,8 +18,6 @@
   export let palette
   export let c1, c2, c3, c4, c5
 
-  // Area specific props
-  export let area
   export let stacked
   export let gradient
 
diff --git a/yarn.lock b/yarn.lock
index 3960a0d5a89..dd01832bba9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8225,6 +8225,13 @@ chokidar@3.5.3, chokidar@^3.5.2, chokidar@^3.5.3:
   optionalDependencies:
     fsevents "~2.3.2"
 
+chokidar@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-4.0.1.tgz#4a6dff66798fb0f72a94f616abbd7e1a19f31d41"
+  integrity sha512-n8enUVCED/KVRQlab1hr3MVpcVMvxtZjmEa956u+4YijlmQED223XMSYj2tLuKvr4jcCTzNNMpQDUer72MMmzA==
+  dependencies:
+    readdirp "^4.0.1"
+
 chownr@^1.1.1:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
@@ -11176,6 +11183,11 @@ fd-slicer@~1.1.0:
   dependencies:
     pend "~1.2.0"
 
+fdir@^6.2.0:
+  version "6.4.2"
+  resolved "https://registry.yarnpkg.com/fdir/-/fdir-6.4.2.tgz#ddaa7ce1831b161bc3657bb99cb36e1622702689"
+  integrity sha512-KnhMXsKSPZlAhp7+IjUkRZKPb4fUyccpDrdFXbi4QL1qkmFh9kVY09Yox+n4MaOb3lHZ1Tv829C3oaaXoMYPDQ==
+
 fecha@^4.2.0:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/fecha/-/fecha-4.2.3.tgz#4d9ccdbc61e8629b259fdca67e65891448d569fd"
@@ -15893,6 +15905,11 @@ mongodb@6.7.0:
     bson "^6.7.0"
     mongodb-connection-string-url "^3.0.0"
 
+mri@^1.1.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/mri/-/mri-1.2.0.tgz#6721480fec2a11a4889861115a48b6cbe7cc8f0b"
+  integrity sha512-tzzskb3bG8LvYGFF/mDTpq3jpI6Q9wc3LEmBaghu+DdCssd1FakN7Bc0hVNmEyGq1bq3RgfkCb3cmQLpNPOroA==
+
 ms@2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
@@ -18840,6 +18857,11 @@ readdirp@^3.6.0, readdirp@~3.6.0:
   dependencies:
     picomatch "^2.2.1"
 
+readdirp@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-4.0.2.tgz#388fccb8b75665da3abffe2d8f8ed59fe74c230a"
+  integrity sha512-yDMz9g+VaZkqBYS/ozoBJwaBhTbZo3UNYQHNRw1D3UFQB8oHB4uS/tAODO+ZLjGWmUbKnIlOWO+aaIiAxrUWHA==
+
 readline-sync@^1.4.9:
   version "1.4.10"
   resolved "https://registry.yarnpkg.com/readline-sync/-/readline-sync-1.4.10.tgz#41df7fbb4b6312d673011594145705bf56d8873b"
@@ -19424,6 +19446,13 @@ rxjs@^7.5.5:
   dependencies:
     tslib "^2.1.0"
 
+sade@^1.7.4:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/sade/-/sade-1.8.1.tgz#0a78e81d658d394887be57d2a409bf703a3b2701"
+  integrity sha512-xal3CZX1Xlo/k4ApwCFrHVACi9fBqJ7V+mwhBsuf/1IOKbBy098Fex+Wa/5QMubw09pSZ/u8EY8PWgevJsXp1A==
+  dependencies:
+    mri "^1.1.0"
+
 safe-array-concat@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/safe-array-concat/-/safe-array-concat-1.1.2.tgz#81d77ee0c4e8b863635227c721278dd524c20edb"
@@ -20259,7 +20288,16 @@ string-range@~1.2, string-range@~1.2.1:
   resolved "https://registry.yarnpkg.com/string-range/-/string-range-1.2.2.tgz#a893ed347e72299bc83befbbf2a692a8d239d5dd"
   integrity sha512-tYft6IFi8SjplJpxCUxyqisD3b+R2CSkomrtJYCkvuf1KuCAWgz7YXt4O0jip7efpfCemwHEzTEAO8EuOYgh3w==
 
-"string-width-cjs@npm:string-width@^4.2.0", "string-width@^1.0.2 || 2 || 3 || 4", string-width@^4.0.0, string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.2, string-width@^4.2.3:
+"string-width-cjs@npm:string-width@^4.2.0":
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
+  integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.1"
+
+"string-width@^1.0.2 || 2 || 3 || 4", string-width@^4.0.0, string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.2, string-width@^4.2.3:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
   integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
@@ -20351,7 +20389,7 @@ stringify-object@^3.2.1:
     is-obj "^1.0.1"
     is-regexp "^1.0.0"
 
-"strip-ansi-cjs@npm:strip-ansi@^6.0.1", strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+"strip-ansi-cjs@npm:strip-ansi@^6.0.1":
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
   integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
@@ -20365,6 +20403,13 @@ strip-ansi@^5.0.0, strip-ansi@^5.1.0, strip-ansi@^5.2.0:
   dependencies:
     ansi-regex "^4.1.0"
 
+strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
+  integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
+  dependencies:
+    ansi-regex "^5.0.1"
+
 strip-ansi@^7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-7.0.1.tgz#61740a08ce36b61e50e65653f07060d000975fb2"
@@ -20570,6 +20615,17 @@ supports-preserve-symlinks-flag@^1.0.0:
   resolved "https://registry.yarnpkg.com/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz#6eda4bd344a3c94aea376d4cc31bc77311039e09"
   integrity sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==
 
+svelte-check@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/svelte-check/-/svelte-check-4.1.0.tgz#4389c1c88aa24f3d06fe0df94f9075a55017256d"
+  integrity sha512-AflEZYqI578KuDZcpcorPSf597LStxlkN7XqXi38u09zlHODVKd7c+7OuubGzbhgGRUqNTdQCZ+Ga96iRXEf2g==
+  dependencies:
+    "@jridgewell/trace-mapping" "^0.3.25"
+    chokidar "^4.0.1"
+    fdir "^6.2.0"
+    picocolors "^1.0.0"
+    sade "^1.7.4"
+
 svelte-dnd-action@^0.9.8:
   version "0.9.22"
   resolved "https://registry.yarnpkg.com/svelte-dnd-action/-/svelte-dnd-action-0.9.22.tgz#003eee9dddb31d8c782f6832aec8b1507fff194d"
@@ -22170,7 +22226,7 @@ worker-farm@1.7.0:
   dependencies:
     errno "~0.1.7"
 
-"wrap-ansi-cjs@npm:wrap-ansi@^7.0.0", wrap-ansi@^7.0.0:
+"wrap-ansi-cjs@npm:wrap-ansi@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
   integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
@@ -22188,6 +22244,15 @@ wrap-ansi@^5.1.0:
     string-width "^3.0.0"
     strip-ansi "^5.0.0"
 
+wrap-ansi@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
+  integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
 wrap-ansi@^8.1.0:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-8.1.0.tgz#56dc22368ee570face1b49819975d9b9a5ead214"