diff --git a/packages/builder/tsconfig.json b/packages/builder/tsconfig.json
index a7a4c3d8008..da5dcd67c66 100644
--- a/packages/builder/tsconfig.json
+++ b/packages/builder/tsconfig.json
@@ -1,6 +1,7 @@
 {
   "extends": "./tsconfig.build.json",
   "compilerOptions": {
+    "outDir": "./dist",
     "baseUrl": ".",
     "paths": {
       "assets/*": ["./assets/*"],
diff --git a/packages/frontend-core/src/components/grid/stores/columns.js b/packages/frontend-core/src/components/grid/stores/columns.ts
similarity index 81%
rename from packages/frontend-core/src/components/grid/stores/columns.js
rename to packages/frontend-core/src/components/grid/stores/columns.ts
index 5f2800ba7a6..b201cc7f7b2 100644
--- a/packages/frontend-core/src/components/grid/stores/columns.js
+++ b/packages/frontend-core/src/components/grid/stores/columns.ts
@@ -1,8 +1,25 @@
-import { derived, get, writable } from "svelte/store"
+import { derived, get, Readable, Writable, writable } from "svelte/store"
 import { DefaultColumnWidth, GutterWidth } from "../lib/constants"
+import { UIColumn } from "@budibase/types"
+import { Store as StoreContext } from "."
 
-export const createStores = () => {
-  const columns = writable([])
+interface ColumnStore {
+  columns: Writable<UIColumn[]>
+}
+
+interface DerivedColumnStore {
+  tableColumns: Readable<UIColumn[]>
+  displayColumn: Readable<UIColumn | undefined>
+  columnLookupMap: Readable<Record<string, UIColumn>>
+  visibleColumns: Readable<UIColumn[]>
+  scrollableColumns: Readable<UIColumn[]>
+  hasNonAutoColumn: Readable<boolean>
+}
+
+export type Store = ColumnStore & DerivedColumnStore
+
+export const createStores = (): ColumnStore => {
+  const columns = writable<UIColumn[]>([])
 
   // Enrich columns with metadata about their display position
   const enrichedColumns = derived(columns, $columns => {
@@ -16,7 +33,7 @@ export const createStores = () => {
       }
       if (col.visible) {
         idx++
-        offset += col.width
+        offset += col.width ?? 0
       }
       return enriched
     })
@@ -30,12 +47,12 @@ export const createStores = () => {
   }
 }
 
-export const deriveStores = context => {
+export const deriveStores = (context: StoreContext): DerivedColumnStore => {
   const { columns } = context
 
   // Derive a lookup map for all columns by name
   const columnLookupMap = derived(columns, $columns => {
-    let map = {}
+    let map: Record<string, UIColumn> = {}
     $columns.forEach(column => {
       map[column.name] = column
     })
@@ -78,11 +95,11 @@ export const deriveStores = context => {
   }
 }
 
-export const createActions = context => {
+export const createActions = (context: StoreContext) => {
   const { columns, datasource } = context
 
   // Updates the width of all columns
-  const changeAllColumnWidths = async width => {
+  const changeAllColumnWidths = async (width: number) => {
     const $columns = get(columns)
     $columns.forEach(column => {
       const { related } = column
@@ -101,7 +118,7 @@ export const createActions = context => {
   }
 
   // Checks if a column is readonly
-  const isReadonly = column => {
+  const isReadonly = (column: UIColumn) => {
     if (!column?.schema) {
       return false
     }
@@ -125,11 +142,11 @@ export const createActions = context => {
   }
 }
 
-export const initialise = context => {
+export const initialise = (context: StoreContext) => {
   const { definition, columns, displayColumn, enrichedSchema } = context
 
   // Merge new schema fields with existing schema in order to preserve widths
-  const processColumns = $enrichedSchema => {
+  const processColumns = ($enrichedSchema: any) => {
     if (!$enrichedSchema) {
       columns.set([])
       return
@@ -139,7 +156,7 @@ export const initialise = context => {
     const $displayColumn = get(displayColumn)
 
     // Find primary display
-    let primaryDisplay
+    let primaryDisplay: string
     const candidatePD = $definition.primaryDisplay || $displayColumn?.name
     if (candidatePD && $enrichedSchema[candidatePD]) {
       primaryDisplay = candidatePD
@@ -151,7 +168,8 @@ export const initialise = context => {
         .map(field => {
           const fieldSchema = $enrichedSchema[field]
           const oldColumn = $columns?.find(col => col.name === field)
-          const column = {
+          const column: UIColumn = {
+            type: fieldSchema.type,
             name: field,
             label: fieldSchema.displayName || field,
             schema: fieldSchema,
diff --git a/packages/frontend-core/src/components/grid/stores/index.js b/packages/frontend-core/src/components/grid/stores/index.ts
similarity index 68%
rename from packages/frontend-core/src/components/grid/stores/index.js
rename to packages/frontend-core/src/components/grid/stores/index.ts
index 6671cc729c5..763a33c398a 100644
--- a/packages/frontend-core/src/components/grid/stores/index.js
+++ b/packages/frontend-core/src/components/grid/stores/index.ts
@@ -1,3 +1,5 @@
+import { Writable } from "svelte/store"
+
 import * as Bounds from "./bounds"
 import * as Columns from "./columns"
 import * as Menu from "./menu"
@@ -48,25 +50,43 @@ const DependencyOrderedStores = [
   Cache,
 ]
 
-export const attachStores = context => {
+export interface BaseStore {}
+
+export type Store = BaseStore &
+  Columns.Store & {
+    // TODO while typing the rest of stores
+    datasource: any
+    definition: Writable<any>
+    enrichedSchema: any
+  }
+
+export const attachStores = (context: Store): Store => {
   // Atomic store creation
   for (let store of DependencyOrderedStores) {
-    context = { ...context, ...store.createStores?.(context) }
+    if ("createStores" in store) {
+      context = { ...context, ...store.createStores?.(context) }
+    }
   }
 
   // Derived store creation
   for (let store of DependencyOrderedStores) {
-    context = { ...context, ...store.deriveStores?.(context) }
+    if ("deriveStores" in store) {
+      context = { ...context, ...store.deriveStores?.(context) }
+    }
   }
 
   // Action creation
   for (let store of DependencyOrderedStores) {
-    context = { ...context, ...store.createActions?.(context) }
+    if ("createActions" in store) {
+      context = { ...context, ...store.createActions?.(context) }
+    }
   }
 
   // Initialise any store logic
   for (let store of DependencyOrderedStores) {
-    store.initialise?.(context)
+    if ("initialise" in store) {
+      store.initialise?.(context)
+    }
   }
 
   return context
diff --git a/packages/types/src/ui/stores/grid/columns.ts b/packages/types/src/ui/stores/grid/columns.ts
new file mode 100644
index 00000000000..d12739fffe2
--- /dev/null
+++ b/packages/types/src/ui/stores/grid/columns.ts
@@ -0,0 +1,19 @@
+import { CalculationType, FieldSchema, FieldType } from "@budibase/types"
+
+export type UIColumn = FieldSchema & {
+  label: string
+  readonly: boolean
+  conditions: any
+  related?: {
+    field: string
+    subField: string
+  }
+  primaryDisplay?: boolean
+  schema?: {
+    disabled: boolean
+    type: FieldType
+    readonly: boolean
+    autocolumn: boolean
+  }
+  calculationType: CalculationType
+}
diff --git a/packages/types/src/ui/stores/grid/index.ts b/packages/types/src/ui/stores/grid/index.ts
new file mode 100644
index 00000000000..81f23bae69f
--- /dev/null
+++ b/packages/types/src/ui/stores/grid/index.ts
@@ -0,0 +1 @@
+export * from "./columns"
diff --git a/packages/types/src/ui/stores/index.ts b/packages/types/src/ui/stores/index.ts
index 658691cc6de..7a6382c6b0c 100644
--- a/packages/types/src/ui/stores/index.ts
+++ b/packages/types/src/ui/stores/index.ts
@@ -1 +1,2 @@
 export * from "./integration"
+export * from "./grid"