diff --git a/lerna.json b/lerna.json
index ff69a18459..0dc09b27be 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,6 +1,6 @@
 {
   "$schema": "node_modules/lerna/schemas/lerna-schema.json",
-  "version": "3.2.38",
+  "version": "3.2.39",
   "npmClient": "yarn",
   "concurrency": 20,
   "command": {
diff --git a/packages/builder/src/stores/builder/queries.js b/packages/builder/src/stores/builder/queries.js
deleted file mode 100644
index 7aeb9ff8fd..0000000000
--- a/packages/builder/src/stores/builder/queries.js
+++ /dev/null
@@ -1,130 +0,0 @@
-import { writable, get, derived } from "svelte/store"
-import { datasources } from "./datasources"
-import { integrations } from "./integrations"
-import { API } from "@/api"
-import { duplicateName } from "@/helpers/duplicate"
-
-const sortQueries = queryList => {
-  queryList.sort((q1, q2) => {
-    return q1.name.localeCompare(q2.name)
-  })
-}
-
-export function createQueriesStore() {
-  const store = writable({
-    list: [],
-    selectedQueryId: null,
-  })
-  const derivedStore = derived(store, $store => ({
-    ...$store,
-    selected: $store.list?.find(q => q._id === $store.selectedQueryId),
-  }))
-
-  const fetch = async () => {
-    const queries = await API.getQueries()
-    sortQueries(queries)
-    store.update(state => ({
-      ...state,
-      list: queries,
-    }))
-  }
-
-  const save = async (datasourceId, query) => {
-    const _integrations = get(integrations)
-    const dataSource = get(datasources).list.filter(
-      ds => ds._id === datasourceId
-    )
-    // Check if readable attribute is found
-    if (dataSource.length !== 0) {
-      const integration = _integrations[dataSource[0].source]
-      const readable = integration.query[query.queryVerb].readable
-      if (readable) {
-        query.readable = readable
-      }
-    }
-    query.datasourceId = datasourceId
-    const savedQuery = await API.saveQuery(query)
-    store.update(state => {
-      const idx = state.list.findIndex(query => query._id === savedQuery._id)
-      const queries = state.list
-      if (idx >= 0) {
-        queries.splice(idx, 1, savedQuery)
-      } else {
-        queries.push(savedQuery)
-      }
-      sortQueries(queries)
-      return {
-        list: queries,
-        selectedQueryId: savedQuery._id,
-      }
-    })
-    return savedQuery
-  }
-
-  const importQueries = async ({ data, datasourceId }) => {
-    return await API.importQueries(datasourceId, data)
-  }
-
-  const select = id => {
-    store.update(state => ({
-      ...state,
-      selectedQueryId: id,
-    }))
-  }
-
-  const preview = async query => {
-    const result = await API.previewQuery(query)
-    // Assume all the fields are strings and create a basic schema from the
-    // unique fields returned by the server
-    const schema = {}
-    for (let [field, metadata] of Object.entries(result.schema)) {
-      schema[field] = metadata || { type: "string" }
-    }
-    return { ...result, schema, rows: result.rows || [] }
-  }
-
-  const deleteQuery = async query => {
-    await API.deleteQuery(query._id, query._rev)
-    store.update(state => {
-      state.list = state.list.filter(existing => existing._id !== query._id)
-      return state
-    })
-  }
-
-  const duplicate = async query => {
-    let list = get(store).list
-    const newQuery = { ...query }
-    const datasourceId = query.datasourceId
-
-    delete newQuery._id
-    delete newQuery._rev
-    newQuery.name = duplicateName(
-      query.name,
-      list.map(q => q.name)
-    )
-
-    return await save(datasourceId, newQuery)
-  }
-
-  const removeDatasourceQueries = datasourceId => {
-    store.update(state => ({
-      ...state,
-      list: state.list.filter(table => table.datasourceId !== datasourceId),
-    }))
-  }
-
-  return {
-    subscribe: derivedStore.subscribe,
-    fetch,
-    init: fetch,
-    select,
-    save,
-    import: importQueries,
-    delete: deleteQuery,
-    preview,
-    duplicate,
-    removeDatasourceQueries,
-  }
-}
-
-export const queries = createQueriesStore()
diff --git a/packages/builder/src/stores/builder/queries.ts b/packages/builder/src/stores/builder/queries.ts
new file mode 100644
index 0000000000..c6511dc346
--- /dev/null
+++ b/packages/builder/src/stores/builder/queries.ts
@@ -0,0 +1,156 @@
+import { derived, get, Writable } from "svelte/store"
+import { datasources } from "./datasources"
+import { integrations } from "./integrations"
+import { API } from "@/api"
+import { duplicateName } from "@/helpers/duplicate"
+import { DerivedBudiStore } from "@/stores/BudiStore"
+import {
+  Query,
+  QueryPreview,
+  PreviewQueryResponse,
+  SaveQueryRequest,
+  ImportRestQueryRequest,
+  QuerySchema,
+} from "@budibase/types"
+
+const sortQueries = (queryList: Query[]) => {
+  queryList.sort((q1, q2) => {
+    return q1.name.localeCompare(q2.name)
+  })
+}
+
+interface BuilderQueryStore {
+  list: Query[]
+  selectedQueryId: string | null
+}
+
+interface DerivedQueryStore extends BuilderQueryStore {
+  selected?: Query
+}
+
+export class QueryStore extends DerivedBudiStore<
+  BuilderQueryStore,
+  DerivedQueryStore
+> {
+  constructor() {
+    const makeDerivedStore = (store: Writable<BuilderQueryStore>) => {
+      return derived(store, ($store): DerivedQueryStore => {
+        return {
+          list: $store.list,
+          selectedQueryId: $store.selectedQueryId,
+          selected: $store.list?.find(q => q._id === $store.selectedQueryId),
+        }
+      })
+    }
+
+    super(
+      {
+        list: [],
+        selectedQueryId: null,
+      },
+      makeDerivedStore
+    )
+
+    this.select = this.select.bind(this)
+  }
+
+  async fetch() {
+    const queries = await API.getQueries()
+    sortQueries(queries)
+    this.store.update(state => ({
+      ...state,
+      list: queries,
+    }))
+  }
+
+  async save(datasourceId: string, query: SaveQueryRequest) {
+    const _integrations = get(integrations)
+    const dataSource = get(datasources).list.filter(
+      ds => ds._id === datasourceId
+    )
+    // Check if readable attribute is found
+    if (dataSource.length !== 0) {
+      const integration = _integrations[dataSource[0].source]
+      const readable = integration.query[query.queryVerb].readable
+      if (readable) {
+        query.readable = readable
+      }
+    }
+    query.datasourceId = datasourceId
+    const savedQuery = await API.saveQuery(query)
+    this.store.update(state => {
+      const idx = state.list.findIndex(query => query._id === savedQuery._id)
+      const queries = state.list
+      if (idx >= 0) {
+        queries.splice(idx, 1, savedQuery)
+      } else {
+        queries.push(savedQuery)
+      }
+      sortQueries(queries)
+      return {
+        list: queries,
+        selectedQueryId: savedQuery._id || null,
+      }
+    })
+    return savedQuery
+  }
+
+  async importQueries(data: ImportRestQueryRequest) {
+    return await API.importQueries(data)
+  }
+
+  select(id: string | null) {
+    this.store.update(state => ({
+      ...state,
+      selectedQueryId: id,
+    }))
+  }
+
+  async preview(query: QueryPreview): Promise<PreviewQueryResponse> {
+    const result = await API.previewQuery(query)
+    // Assume all the fields are strings and create a basic schema from the
+    // unique fields returned by the server
+    const schema: Record<string, QuerySchema> = {}
+    for (let [field, metadata] of Object.entries(result.schema)) {
+      schema[field] = (metadata as QuerySchema) || { type: "string" }
+    }
+    return { ...result, schema, rows: result.rows || [] }
+  }
+
+  async delete(query: Query) {
+    if (!query._id || !query._rev) {
+      throw new Error("Query ID or Revision is missing")
+    }
+    await API.deleteQuery(query._id, query._rev)
+    this.store.update(state => ({
+      ...state,
+      list: state.list.filter(existing => existing._id !== query._id),
+    }))
+  }
+
+  async duplicate(query: Query) {
+    let list = get(this.store).list
+    const newQuery = { ...query }
+    const datasourceId = query.datasourceId
+
+    delete newQuery._id
+    delete newQuery._rev
+    newQuery.name = duplicateName(
+      query.name,
+      list.map(q => q.name)
+    )
+
+    return await this.save(datasourceId, newQuery)
+  }
+
+  removeDatasourceQueries(datasourceId: string) {
+    this.store.update(state => ({
+      ...state,
+      list: state.list.filter(table => table.datasourceId !== datasourceId),
+    }))
+  }
+
+  init = this.fetch
+}
+
+export const queries = new QueryStore()
diff --git a/packages/client/src/api/api.js b/packages/client/src/api/api.ts
similarity index 94%
rename from packages/client/src/api/api.js
rename to packages/client/src/api/api.ts
index d4c8faa4d2..b944f7bd7c 100644
--- a/packages/client/src/api/api.js
+++ b/packages/client/src/api/api.ts
@@ -1,6 +1,10 @@
 import { createAPIClient } from "@budibase/frontend-core"
-import { authStore } from "../stores/auth.js"
-import { notificationStore, devToolsEnabled, devToolsStore } from "../stores/"
+import { authStore } from "../stores/auth"
+import {
+  notificationStore,
+  devToolsEnabled,
+  devToolsStore,
+} from "../stores/index"
 import { get } from "svelte/store"
 
 export const API = createAPIClient({
diff --git a/packages/client/src/api/index.js b/packages/client/src/api/index.js
index 5eb6b2b6f4..3c53045cfd 100644
--- a/packages/client/src/api/index.js
+++ b/packages/client/src/api/index.js
@@ -1,5 +1,5 @@
-import { API } from "./api.js"
-import { patchAPI } from "./patches.js"
+import { API } from "./api"
+import { patchAPI } from "./patches"
 
 // Certain endpoints which return rows need patched so that they transform
 // and enrich the row docs, so that they can be correctly handled by the
diff --git a/packages/client/src/index.d.ts b/packages/client/src/index.d.ts
new file mode 100644
index 0000000000..7e13670b33
--- /dev/null
+++ b/packages/client/src/index.d.ts
@@ -0,0 +1,5 @@
+interface Window {
+  "##BUDIBASE_APP_ID##": string
+  "##BUDIBASE_IN_BUILDER##": string
+  MIGRATING_APP: boolean
+}
diff --git a/packages/client/src/sdk.js b/packages/client/src/sdk.js
index 40d066f2ee..68d75d2806 100644
--- a/packages/client/src/sdk.js
+++ b/packages/client/src/sdk.js
@@ -29,7 +29,7 @@ import { ActionTypes } from "./constants"
 import {
   fetchDatasourceSchema,
   fetchDatasourceDefinition,
-} from "./utils/schema.js"
+} from "./utils/schema"
 import { getAPIKey } from "./utils/api.js"
 import { enrichButtonActions } from "./utils/buttonActions.js"
 import { processStringSync, makePropSafe } from "@budibase/string-templates"
diff --git a/packages/client/src/stores/auth.js b/packages/client/src/stores/auth.ts
similarity index 94%
rename from packages/client/src/stores/auth.js
rename to packages/client/src/stores/auth.ts
index 214cc7bce2..15f44e7c32 100644
--- a/packages/client/src/stores/auth.js
+++ b/packages/client/src/stores/auth.ts
@@ -2,7 +2,9 @@ import { API } from "api"
 import { writable } from "svelte/store"
 
 const createAuthStore = () => {
-  const store = writable(null)
+  const store = writable<{
+    csrfToken?: string
+  } | null>(null)
 
   // Fetches the user object if someone is logged in and has reloaded the page
   const fetchUser = async () => {
diff --git a/packages/client/src/stores/derived/currentRole.js b/packages/client/src/stores/derived/currentRole.js
index 8bb4c5a25d..056a05f8ab 100644
--- a/packages/client/src/stores/derived/currentRole.js
+++ b/packages/client/src/stores/derived/currentRole.js
@@ -1,7 +1,7 @@
 import { derived } from "svelte/store"
 import { Constants } from "@budibase/frontend-core"
 import { devToolsStore } from "../devTools.js"
-import { authStore } from "../auth.js"
+import { authStore } from "../auth"
 import { devToolsEnabled } from "./devToolsEnabled.js"
 
 // Derive the current role of the logged-in user
diff --git a/packages/client/src/stores/notification.js b/packages/client/src/stores/notification.ts
similarity index 80%
rename from packages/client/src/stores/notification.js
rename to packages/client/src/stores/notification.ts
index 054117aaba..fa28b9f40a 100644
--- a/packages/client/src/stores/notification.js
+++ b/packages/client/src/stores/notification.ts
@@ -6,7 +6,7 @@ const DEFAULT_NOTIFICATION_TIMEOUT = 3000
 const createNotificationStore = () => {
   let block = false
 
-  const store = writable([])
+  const store = writable<{ id: string; message: string; count: number }[]>([])
 
   const blockNotifications = (timeout = 1000) => {
     block = true
@@ -14,11 +14,11 @@ const createNotificationStore = () => {
   }
 
   const send = (
-    message,
+    message: string,
     type = "info",
-    icon,
+    icon: string,
     autoDismiss = true,
-    duration,
+    duration?: number,
     count = 1
   ) => {
     if (block) {
@@ -66,7 +66,7 @@ const createNotificationStore = () => {
     }
   }
 
-  const dismiss = id => {
+  const dismiss = (id: string) => {
     store.update(state => {
       return state.filter(n => n.id !== id)
     })
@@ -76,13 +76,13 @@ const createNotificationStore = () => {
     subscribe: store.subscribe,
     actions: {
       send,
-      info: (msg, autoDismiss, duration) =>
+      info: (msg: string, autoDismiss?: boolean, duration?: number) =>
         send(msg, "info", "Info", autoDismiss ?? true, duration),
-      success: (msg, autoDismiss, duration) =>
+      success: (msg: string, autoDismiss?: boolean, duration?: number) =>
         send(msg, "success", "CheckmarkCircle", autoDismiss ?? true, duration),
-      warning: (msg, autoDismiss, duration) =>
+      warning: (msg: string, autoDismiss?: boolean, duration?: number) =>
         send(msg, "warning", "Alert", autoDismiss ?? true, duration),
-      error: (msg, autoDismiss, duration) =>
+      error: (msg: string, autoDismiss?: boolean, duration?: number) =>
         send(msg, "error", "Alert", autoDismiss ?? false, duration),
       blockNotifications,
       dismiss,
diff --git a/packages/client/src/stores/routes.js b/packages/client/src/stores/routes.ts
similarity index 82%
rename from packages/client/src/stores/routes.js
rename to packages/client/src/stores/routes.ts
index 8e318af2e3..3f200a9c88 100644
--- a/packages/client/src/stores/routes.js
+++ b/packages/client/src/stores/routes.ts
@@ -4,8 +4,24 @@ import { API } from "api"
 import { peekStore } from "./peek"
 import { builderStore } from "./builder"
 
+interface Route {
+  path: string
+  screenId: string
+}
+
+interface StoreType {
+  routes: Route[]
+  routeParams: {}
+  activeRoute?: Route | null
+  routeSessionId: number
+  routerLoaded: boolean
+  queryParams?: {
+    peek?: boolean
+  }
+}
+
 const createRouteStore = () => {
-  const initialState = {
+  const initialState: StoreType = {
     routes: [],
     routeParams: {},
     activeRoute: null,
@@ -22,7 +38,7 @@ const createRouteStore = () => {
     } catch (error) {
       routeConfig = null
     }
-    let routes = []
+    const routes: Route[] = []
     Object.values(routeConfig?.routes || {}).forEach(route => {
       Object.entries(route.subpaths || {}).forEach(([path, config]) => {
         routes.push({
@@ -43,13 +59,13 @@ const createRouteStore = () => {
       return state
     })
   }
-  const setRouteParams = routeParams => {
+  const setRouteParams = (routeParams: StoreType["routeParams"]) => {
     store.update(state => {
       state.routeParams = routeParams
       return state
     })
   }
-  const setQueryParams = queryParams => {
+  const setQueryParams = (queryParams: { peek?: boolean }) => {
     store.update(state => {
       state.queryParams = {
         ...queryParams,
@@ -60,13 +76,13 @@ const createRouteStore = () => {
       return state
     })
   }
-  const setActiveRoute = route => {
+  const setActiveRoute = (route: string) => {
     store.update(state => {
       state.activeRoute = state.routes.find(x => x.path === route)
       return state
     })
   }
-  const navigate = (url, peek, externalNewTab) => {
+  const navigate = (url: string, peek: boolean, externalNewTab: boolean) => {
     if (get(builderStore).inBuilder) {
       return
     }
@@ -93,7 +109,7 @@ const createRouteStore = () => {
   const setRouterLoaded = () => {
     store.update(state => ({ ...state, routerLoaded: true }))
   }
-  const createFullURL = relativeURL => {
+  const createFullURL = (relativeURL: string) => {
     if (!relativeURL?.startsWith("/")) {
       return relativeURL
     }
diff --git a/packages/client/src/utils/schema.js b/packages/client/src/utils/schema.ts
similarity index 57%
rename from packages/client/src/utils/schema.js
rename to packages/client/src/utils/schema.ts
index 60800afc53..5400d62087 100644
--- a/packages/client/src/utils/schema.js
+++ b/packages/client/src/utils/schema.ts
@@ -1,13 +1,5 @@
 import { API } from "api"
-import TableFetch from "@budibase/frontend-core/src/fetch/TableFetch"
-import ViewFetch from "@budibase/frontend-core/src/fetch/ViewFetch"
-import QueryFetch from "@budibase/frontend-core/src/fetch/QueryFetch"
-import RelationshipFetch from "@budibase/frontend-core/src/fetch/RelationshipFetch"
-import NestedProviderFetch from "@budibase/frontend-core/src/fetch/NestedProviderFetch"
-import FieldFetch from "@budibase/frontend-core/src/fetch/FieldFetch"
-import JSONArrayFetch from "@budibase/frontend-core/src/fetch/JSONArrayFetch"
-import ViewV2Fetch from "@budibase/frontend-core/src/fetch/ViewV2Fetch"
-import QueryArrayFetch from "@budibase/frontend-core/src/fetch/QueryArrayFetch"
+import { DataFetchMap, DataFetchType } from "@budibase/frontend-core"
 
 /**
  * Constructs a fetch instance for a given datasource.
@@ -16,22 +8,20 @@ import QueryArrayFetch from "@budibase/frontend-core/src/fetch/QueryArrayFetch"
  * @param datasource the datasource
  * @returns
  */
-const getDatasourceFetchInstance = datasource => {
-  const handler = {
-    table: TableFetch,
-    view: ViewFetch,
-    viewV2: ViewV2Fetch,
-    query: QueryFetch,
-    link: RelationshipFetch,
-    provider: NestedProviderFetch,
-    field: FieldFetch,
-    jsonarray: JSONArrayFetch,
-    queryarray: QueryArrayFetch,
-  }[datasource?.type]
+const getDatasourceFetchInstance = <
+  TDatasource extends { type: DataFetchType }
+>(
+  datasource: TDatasource
+) => {
+  const handler = DataFetchMap[datasource?.type]
   if (!handler) {
     return null
   }
-  return new handler({ API, datasource })
+  return new handler({
+    API,
+    datasource: datasource as never,
+    query: null as any,
+  })
 }
 
 /**
@@ -39,21 +29,23 @@ const getDatasourceFetchInstance = datasource => {
  * @param datasource the datasource to fetch the schema for
  * @param options options for enriching the schema
  */
-export const fetchDatasourceSchema = async (
-  datasource,
+export const fetchDatasourceSchema = async <
+  TDatasource extends { type: DataFetchType }
+>(
+  datasource: TDatasource,
   options = { enrichRelationships: false, formSchema: false }
 ) => {
   const instance = getDatasourceFetchInstance(datasource)
-  const definition = await instance?.getDefinition(datasource)
-  if (!definition) {
+  const definition = await instance?.getDefinition()
+  if (!instance || !definition) {
     return null
   }
 
   // Get the normal schema as long as we aren't wanting a form schema
-  let schema
+  let schema: any
   if (datasource?.type !== "query" || !options?.formSchema) {
-    schema = instance.getSchema(definition)
-  } else if (definition.parameters?.length) {
+    schema = instance.getSchema(definition as any)
+  } else if ("parameters" in definition && definition.parameters?.length) {
     schema = {}
     definition.parameters.forEach(param => {
       schema[param.name] = { ...param, type: "string" }
@@ -73,7 +65,12 @@ export const fetchDatasourceSchema = async (
   }
 
   // Enrich schema with relationships if required
-  if (definition?.sql && options?.enrichRelationships) {
+  if (
+    definition &&
+    "sql" in definition &&
+    definition.sql &&
+    options?.enrichRelationships
+  ) {
     const relationshipAdditions = await getRelationshipSchemaAdditions(schema)
     schema = {
       ...schema,
@@ -89,20 +86,26 @@ export const fetchDatasourceSchema = async (
  * Fetches the definition of any kind of datasource.
  * @param datasource the datasource to fetch the schema for
  */
-export const fetchDatasourceDefinition = async datasource => {
+export const fetchDatasourceDefinition = async <
+  TDatasource extends { type: DataFetchType }
+>(
+  datasource: TDatasource
+) => {
   const instance = getDatasourceFetchInstance(datasource)
-  return await instance?.getDefinition(datasource)
+  return await instance?.getDefinition()
 }
 
 /**
  * Fetches the schema of relationship fields for a SQL table schema
  * @param schema the schema to enrich
  */
-export const getRelationshipSchemaAdditions = async schema => {
+export const getRelationshipSchemaAdditions = async (
+  schema: Record<string, any>
+) => {
   if (!schema) {
     return null
   }
-  let relationshipAdditions = {}
+  let relationshipAdditions: Record<string, any> = {}
   for (let fieldKey of Object.keys(schema)) {
     const fieldSchema = schema[fieldKey]
     if (fieldSchema?.type === "link") {
@@ -110,7 +113,10 @@ export const getRelationshipSchemaAdditions = async schema => {
         type: "table",
         tableId: fieldSchema?.tableId,
       })
-      Object.keys(linkSchema || {}).forEach(linkKey => {
+      if (!linkSchema) {
+        continue
+      }
+      Object.keys(linkSchema).forEach(linkKey => {
         relationshipAdditions[`${fieldKey}.${linkKey}`] = {
           type: linkSchema[linkKey].type,
           externalType: linkSchema[linkKey].externalType,
diff --git a/packages/frontend-core/src/api/index.ts b/packages/frontend-core/src/api/index.ts
index f7b05c338a..6efc90023a 100644
--- a/packages/frontend-core/src/api/index.ts
+++ b/packages/frontend-core/src/api/index.ts
@@ -68,13 +68,13 @@ export const createAPIClient = (config: APIClientConfig = {}): APIClient => {
   ): Promise<APIError> => {
     // Try to read a message from the error
     let message = response.statusText
-    let json: any = null
+    let json = null
     try {
       json = await response.json()
       if (json?.message) {
         message = json.message
       } else if (json?.error) {
-        message = json.error
+        message = JSON.stringify(json.error)
       }
     } catch (error) {
       // Do nothing
@@ -93,7 +93,7 @@ export const createAPIClient = (config: APIClientConfig = {}): APIClient => {
   // Generates an error object from a string
   const makeError = (
     message: string,
-    url?: string,
+    url: string,
     method?: HTTPMethod
   ): APIError => {
     return {
@@ -226,7 +226,7 @@ export const createAPIClient = (config: APIClientConfig = {}): APIClient => {
         return await handler(callConfig)
       } catch (error) {
         if (config?.onError) {
-          config.onError(error)
+          config.onError(error as APIError)
         }
         throw error
       }
@@ -239,13 +239,9 @@ export const createAPIClient = (config: APIClientConfig = {}): APIClient => {
     patch: requestApiCall(HTTPMethod.PATCH),
     delete: requestApiCall(HTTPMethod.DELETE),
     put: requestApiCall(HTTPMethod.PUT),
-    error: (message: string) => {
-      throw makeError(message)
-    },
     invalidateCache: () => {
       cache = {}
     },
-
     // Generic utility to extract the current app ID. Assumes that any client
     // that exists in an app context will be attaching our app ID header.
     getAppID: (): string => {
diff --git a/packages/frontend-core/src/api/types.ts b/packages/frontend-core/src/api/types.ts
index 0db1049591..4819b4cd3b 100644
--- a/packages/frontend-core/src/api/types.ts
+++ b/packages/frontend-core/src/api/types.ts
@@ -46,7 +46,7 @@ export type Headers = Record<string, string>
 export type APIClientConfig = {
   enableCaching?: boolean
   attachHeaders?: (headers: Headers) => void
-  onError?: (error: any) => void
+  onError?: (error: APIError) => void
   onMigrationDetected?: (migration: string) => void
 }
 
@@ -86,14 +86,13 @@ export type BaseAPIClient = {
   patch: <RequestT = null, ResponseT = void>(
     params: APICallParams<RequestT, ResponseT>
   ) => Promise<ResponseT>
-  error: (message: string) => void
   invalidateCache: () => void
   getAppID: () => string
 }
 
 export type APIError = {
   message?: string
-  url?: string
+  url: string
   method?: HTTPMethod
   json: any
   status: number
diff --git a/packages/frontend-core/src/fetch/CustomFetch.ts b/packages/frontend-core/src/fetch/CustomFetch.ts
index afd3d18ba9..dfd29c4a02 100644
--- a/packages/frontend-core/src/fetch/CustomFetch.ts
+++ b/packages/frontend-core/src/fetch/CustomFetch.ts
@@ -1,6 +1,7 @@
 import DataFetch from "./DataFetch"
 
 interface CustomDatasource {
+  type: "custom"
   data: any
 }
 
diff --git a/packages/frontend-core/src/fetch/DataFetch.ts b/packages/frontend-core/src/fetch/DataFetch.ts
index 0079fec057..b10a8b0a69 100644
--- a/packages/frontend-core/src/fetch/DataFetch.ts
+++ b/packages/frontend-core/src/fetch/DataFetch.ts
@@ -13,6 +13,7 @@ import {
   UISearchFilter,
 } from "@budibase/types"
 import { APIClient } from "../api/types"
+import { DataFetchType } from "."
 
 const { buildQuery, limit: queryLimit, runQuery, sort } = QueryUtils
 
@@ -59,7 +60,7 @@ export interface DataFetchParams<
  * For other types of datasource, this class is overridden and extended.
  */
 export default abstract class DataFetch<
-  TDatasource extends {},
+  TDatasource extends { type: DataFetchType },
   TDefinition extends {
     schema?: Record<string, any> | null
     primaryDisplay?: string
@@ -368,7 +369,7 @@ export default abstract class DataFetch<
    * @param schema the datasource schema
    * @return {object} the enriched datasource schema
    */
-  private enrichSchema(schema: TableSchema): TableSchema {
+  enrichSchema(schema: TableSchema): TableSchema {
     // Check for any JSON fields so we can add any top level properties
     let jsonAdditions: Record<string, { type: string; nestedJSON: true }> = {}
     for (const fieldKey of Object.keys(schema)) {
diff --git a/packages/frontend-core/src/fetch/FieldFetch.ts b/packages/frontend-core/src/fetch/FieldFetch.ts
index ac1e683c51..694443a5dc 100644
--- a/packages/frontend-core/src/fetch/FieldFetch.ts
+++ b/packages/frontend-core/src/fetch/FieldFetch.ts
@@ -1,7 +1,10 @@
 import { Row } from "@budibase/types"
 import DataFetch from "./DataFetch"
 
-export interface FieldDatasource {
+type Types = "field" | "queryarray" | "jsonarray"
+
+export interface FieldDatasource<TType extends Types> {
+  type: TType
   tableId: string
   fieldType: "attachment" | "array"
   value: string[] | Row[]
@@ -15,8 +18,8 @@ function isArrayOfStrings(value: string[] | Row[]): value is string[] {
   return Array.isArray(value) && !!value[0] && typeof value[0] !== "object"
 }
 
-export default class FieldFetch extends DataFetch<
-  FieldDatasource,
+export default class FieldFetch<TType extends Types> extends DataFetch<
+  FieldDatasource<TType>,
   FieldDefinition
 > {
   async getDefinition(): Promise<FieldDefinition | null> {
diff --git a/packages/frontend-core/src/fetch/GroupUserFetch.ts b/packages/frontend-core/src/fetch/GroupUserFetch.ts
index a14623bfb0..e07e5331d4 100644
--- a/packages/frontend-core/src/fetch/GroupUserFetch.ts
+++ b/packages/frontend-core/src/fetch/GroupUserFetch.ts
@@ -8,6 +8,7 @@ interface GroupUserQuery {
 }
 
 interface GroupUserDatasource {
+  type: "groupUser"
   tableId: TableNames.USERS
 }
 
@@ -20,6 +21,7 @@ export default class GroupUserFetch extends DataFetch<
     super({
       ...opts,
       datasource: {
+        type: "groupUser",
         tableId: TableNames.USERS,
       },
     })
diff --git a/packages/frontend-core/src/fetch/JSONArrayFetch.ts b/packages/frontend-core/src/fetch/JSONArrayFetch.ts
index cae9a1e521..d746c923f8 100644
--- a/packages/frontend-core/src/fetch/JSONArrayFetch.ts
+++ b/packages/frontend-core/src/fetch/JSONArrayFetch.ts
@@ -1,7 +1,7 @@
 import FieldFetch from "./FieldFetch"
 import { getJSONArrayDatasourceSchema } from "../utils/json"
 
-export default class JSONArrayFetch extends FieldFetch {
+export default class JSONArrayFetch extends FieldFetch<"jsonarray"> {
   async getDefinition() {
     const { datasource } = this.options
 
diff --git a/packages/frontend-core/src/fetch/NestedProviderFetch.ts b/packages/frontend-core/src/fetch/NestedProviderFetch.ts
index 666340610f..af121fcef8 100644
--- a/packages/frontend-core/src/fetch/NestedProviderFetch.ts
+++ b/packages/frontend-core/src/fetch/NestedProviderFetch.ts
@@ -2,6 +2,7 @@ import { Row, TableSchema } from "@budibase/types"
 import DataFetch from "./DataFetch"
 
 interface NestedProviderDatasource {
+  type: "provider"
   value?: {
     schema: TableSchema
     primaryDisplay: string
diff --git a/packages/frontend-core/src/fetch/QueryArrayFetch.ts b/packages/frontend-core/src/fetch/QueryArrayFetch.ts
index 9142000fe6..7f4d34aaa6 100644
--- a/packages/frontend-core/src/fetch/QueryArrayFetch.ts
+++ b/packages/frontend-core/src/fetch/QueryArrayFetch.ts
@@ -4,7 +4,7 @@ import {
   generateQueryArraySchemas,
 } from "../utils/json"
 
-export default class QueryArrayFetch extends FieldFetch {
+export default class QueryArrayFetch extends FieldFetch<"queryarray"> {
   async getDefinition() {
     const { datasource } = this.options
 
diff --git a/packages/frontend-core/src/fetch/QueryFetch.ts b/packages/frontend-core/src/fetch/QueryFetch.ts
index 0754edd267..09dde86cbd 100644
--- a/packages/frontend-core/src/fetch/QueryFetch.ts
+++ b/packages/frontend-core/src/fetch/QueryFetch.ts
@@ -4,6 +4,7 @@ import { ExecuteQueryRequest, Query } from "@budibase/types"
 import { get } from "svelte/store"
 
 interface QueryDatasource {
+  type: "query"
   _id: string
   fields: Record<string, any> & {
     pagination?: {
diff --git a/packages/frontend-core/src/fetch/RelationshipFetch.ts b/packages/frontend-core/src/fetch/RelationshipFetch.ts
index f853a753cd..89a85ab0e4 100644
--- a/packages/frontend-core/src/fetch/RelationshipFetch.ts
+++ b/packages/frontend-core/src/fetch/RelationshipFetch.ts
@@ -2,6 +2,7 @@ import { Table } from "@budibase/types"
 import DataFetch from "./DataFetch"
 
 interface RelationshipDatasource {
+  type: "link"
   tableId: string
   rowId: string
   rowTableId: string
diff --git a/packages/frontend-core/src/fetch/TableFetch.ts b/packages/frontend-core/src/fetch/TableFetch.ts
index f5927262cb..67cac6b6a7 100644
--- a/packages/frontend-core/src/fetch/TableFetch.ts
+++ b/packages/frontend-core/src/fetch/TableFetch.ts
@@ -1,8 +1,13 @@
 import { get } from "svelte/store"
 import DataFetch from "./DataFetch"
-import { SortOrder, Table, UITable } from "@budibase/types"
+import { SortOrder, Table } from "@budibase/types"
 
-export default class TableFetch extends DataFetch<UITable, Table> {
+interface TableDatasource {
+  type: "table"
+  tableId: string
+}
+
+export default class TableFetch extends DataFetch<TableDatasource, Table> {
   async determineFeatureFlags() {
     return {
       supportsSearch: true,
diff --git a/packages/frontend-core/src/fetch/UserFetch.ts b/packages/frontend-core/src/fetch/UserFetch.ts
index 656cd840fe..36aebac506 100644
--- a/packages/frontend-core/src/fetch/UserFetch.ts
+++ b/packages/frontend-core/src/fetch/UserFetch.ts
@@ -2,11 +2,7 @@ import { get } from "svelte/store"
 import DataFetch, { DataFetchParams } from "./DataFetch"
 import { TableNames } from "../constants"
 import { utils } from "@budibase/shared-core"
-import {
-  BasicOperator,
-  SearchFilters,
-  SearchUsersRequest,
-} from "@budibase/types"
+import { SearchFilters, SearchUsersRequest } from "@budibase/types"
 
 interface UserFetchQuery {
   appId: string
@@ -14,18 +10,22 @@ interface UserFetchQuery {
 }
 
 interface UserDatasource {
-  tableId: string
+  type: "user"
+  tableId: TableNames.USERS
 }
 
+interface UserDefinition {}
+
 export default class UserFetch extends DataFetch<
   UserDatasource,
-  {},
+  UserDefinition,
   UserFetchQuery
 > {
   constructor(opts: DataFetchParams<UserDatasource, UserFetchQuery>) {
     super({
       ...opts,
       datasource: {
+        type: "user",
         tableId: TableNames.USERS,
       },
     })
@@ -52,7 +52,7 @@ export default class UserFetch extends DataFetch<
 
     const finalQuery: SearchFilters = utils.isSupportedUserSearch(rest)
       ? rest
-      : { [BasicOperator.EMPTY]: { email: null } }
+      : {}
 
     try {
       const opts: SearchUsersRequest = {
diff --git a/packages/frontend-core/src/fetch/ViewFetch.ts b/packages/frontend-core/src/fetch/ViewFetch.ts
index b6830e7118..df00b9bbfc 100644
--- a/packages/frontend-core/src/fetch/ViewFetch.ts
+++ b/packages/frontend-core/src/fetch/ViewFetch.ts
@@ -1,9 +1,16 @@
-import { Table, View } from "@budibase/types"
+import { Table } from "@budibase/types"
 import DataFetch from "./DataFetch"
 
-type ViewV1 = View & { name: string }
+type ViewV1Datasource = {
+  type: "view"
+  name: string
+  tableId: string
+  calculation: string
+  field: string
+  groupBy: string
+}
 
-export default class ViewFetch extends DataFetch<ViewV1, Table> {
+export default class ViewFetch extends DataFetch<ViewV1Datasource, Table> {
   async getDefinition() {
     const { datasource } = this.options
 
diff --git a/packages/frontend-core/src/fetch/ViewV2Fetch.ts b/packages/frontend-core/src/fetch/ViewV2Fetch.ts
index cdd3bab6ed..aa5fbd60a2 100644
--- a/packages/frontend-core/src/fetch/ViewV2Fetch.ts
+++ b/packages/frontend-core/src/fetch/ViewV2Fetch.ts
@@ -1,9 +1,17 @@
-import { SortOrder, UIView, ViewV2, ViewV2Type } from "@budibase/types"
+import { SortOrder, ViewV2Enriched, ViewV2Type } from "@budibase/types"
 import DataFetch from "./DataFetch"
 import { get } from "svelte/store"
 import { helpers } from "@budibase/shared-core"
 
-export default class ViewV2Fetch extends DataFetch<UIView, ViewV2> {
+interface ViewDatasource {
+  type: "viewV2"
+  id: string
+}
+
+export default class ViewV2Fetch extends DataFetch<
+  ViewDatasource,
+  ViewV2Enriched
+> {
   async determineFeatureFlags() {
     return {
       supportsSearch: true,
diff --git a/packages/frontend-core/src/fetch/index.ts b/packages/frontend-core/src/fetch/index.ts
index c1f35abef2..d80aa10df6 100644
--- a/packages/frontend-core/src/fetch/index.ts
+++ b/packages/frontend-core/src/fetch/index.ts
@@ -1,18 +1,20 @@
-import TableFetch from "./TableFetch.js"
-import ViewFetch from "./ViewFetch.js"
-import ViewV2Fetch from "./ViewV2Fetch.js"
+import TableFetch from "./TableFetch"
+import ViewFetch from "./ViewFetch"
+import ViewV2Fetch from "./ViewV2Fetch"
 import QueryFetch from "./QueryFetch"
 import RelationshipFetch from "./RelationshipFetch"
 import NestedProviderFetch from "./NestedProviderFetch"
 import FieldFetch from "./FieldFetch"
 import JSONArrayFetch from "./JSONArrayFetch"
-import UserFetch from "./UserFetch.js"
+import UserFetch from "./UserFetch"
 import GroupUserFetch from "./GroupUserFetch"
 import CustomFetch from "./CustomFetch"
-import QueryArrayFetch from "./QueryArrayFetch.js"
-import { APIClient } from "../api/types.js"
+import QueryArrayFetch from "./QueryArrayFetch"
+import { APIClient } from "../api/types"
 
-const DataFetchMap = {
+export type DataFetchType = keyof typeof DataFetchMap
+
+export const DataFetchMap = {
   table: TableFetch,
   view: ViewFetch,
   viewV2: ViewV2Fetch,
@@ -24,15 +26,14 @@ const DataFetchMap = {
 
   // Client specific datasource types
   provider: NestedProviderFetch,
-  field: FieldFetch,
+  field: FieldFetch<"field">,
   jsonarray: JSONArrayFetch,
   queryarray: QueryArrayFetch,
 }
 
 // Constructs a new fetch model for a certain datasource
 export const fetchData = ({ API, datasource, options }: any) => {
-  const Fetch =
-    DataFetchMap[datasource?.type as keyof typeof DataFetchMap] || TableFetch
+  const Fetch = DataFetchMap[datasource?.type as DataFetchType] || TableFetch
   const fetch = new Fetch({ API, datasource, ...options })
 
   // Initially fetch data but don't bother waiting for the result
@@ -43,29 +44,27 @@ export const fetchData = ({ API, datasource, options }: any) => {
 
 // Creates an empty fetch instance with no datasource configured, so no data
 // will initially be loaded
-const createEmptyFetchInstance = <
-  TDatasource extends {
-    type: keyof typeof DataFetchMap
-  }
->({
+const createEmptyFetchInstance = <TDatasource extends { type: DataFetchType }>({
   API,
   datasource,
 }: {
   API: APIClient
   datasource: TDatasource
 }) => {
-  const handler = DataFetchMap[datasource?.type as keyof typeof DataFetchMap]
+  const handler = DataFetchMap[datasource?.type as DataFetchType]
   if (!handler) {
     return null
   }
-  return new handler({ API, datasource: null as any, query: null as any })
+  return new handler({
+    API,
+    datasource: null as never,
+    query: null as any,
+  })
 }
 
 // Fetches the definition of any type of datasource
 export const getDatasourceDefinition = async <
-  TDatasource extends {
-    type: keyof typeof DataFetchMap
-  }
+  TDatasource extends { type: DataFetchType }
 >({
   API,
   datasource,
@@ -79,9 +78,7 @@ export const getDatasourceDefinition = async <
 
 // Fetches the schema of any type of datasource
 export const getDatasourceSchema = <
-  TDatasource extends {
-    type: keyof typeof DataFetchMap
-  }
+  TDatasource extends { type: DataFetchType }
 >({
   API,
   datasource,
diff --git a/packages/frontend-core/src/index.ts b/packages/frontend-core/src/index.ts
index 37951dc776..c0baa63ab6 100644
--- a/packages/frontend-core/src/index.ts
+++ b/packages/frontend-core/src/index.ts
@@ -1,5 +1,6 @@
 export { createAPIClient } from "./api"
-export { fetchData } from "./fetch"
+export { fetchData, DataFetchMap } from "./fetch"
+export type { DataFetchType } from "./fetch"
 export * as Constants from "./constants"
 export * from "./stores"
 export * from "./utils"
diff --git a/packages/types/src/api/web/global/self.ts b/packages/types/src/api/web/global/self.ts
index 517559d1ca..9d99a1f1a5 100644
--- a/packages/types/src/api/web/global/self.ts
+++ b/packages/types/src/api/web/global/self.ts
@@ -15,5 +15,5 @@ export interface GetGlobalSelfResponse extends User {
   license: License
   budibaseAccess: boolean
   accountPortalAccess: boolean
-  csrfToken: boolean
+  csrfToken: string
 }
diff --git a/packages/types/src/documents/app/screen.ts b/packages/types/src/documents/app/screen.ts
index b2cedf31a9..a8c32118d3 100644
--- a/packages/types/src/documents/app/screen.ts
+++ b/packages/types/src/documents/app/screen.ts
@@ -33,11 +33,6 @@ export interface ScreenRoutesViewOutput extends Document {
 export type ScreenRoutingJson = Record<
   string,
   {
-    subpaths: Record<
-      string,
-      {
-        screens: Record<string, string>
-      }
-    >
+    subpaths: Record<string, any>
   }
 >
diff --git a/packages/types/src/sdk/featureFlag.ts b/packages/types/src/sdk/featureFlag.ts
index 7b61b70772..996d3bba8d 100644
--- a/packages/types/src/sdk/featureFlag.ts
+++ b/packages/types/src/sdk/featureFlag.ts
@@ -1,9 +1,15 @@
 export enum FeatureFlag {
   USE_ZOD_VALIDATOR = "USE_ZOD_VALIDATOR",
+
+  // Account-portal
+  DIRECT_LOGIN_TO_ACCOUNT_PORTAL = "DIRECT_LOGIN_TO_ACCOUNT_PORTAL",
 }
 
 export const FeatureFlagDefaults = {
   [FeatureFlag.USE_ZOD_VALIDATOR]: false,
+
+  // Account-portal
+  [FeatureFlag.DIRECT_LOGIN_TO_ACCOUNT_PORTAL]: false,
 }
 
 export type FeatureFlags = typeof FeatureFlagDefaults