diff --git a/src/main/frontend/db/model.cljs b/src/main/frontend/db/model.cljs
index b447a5857..f3592559e 100644
--- a/src/main/frontend/db/model.cljs
+++ b/src/main/frontend/db/model.cljs
@@ -79,11 +79,6 @@
 
 (def hidden-page? ldb/hidden-page?)
 
-(defn get-pages
-  [repo]
-  (let [db (conn/get-db repo)]
-    (ldb/get-pages db)))
-
 (defn get-all-pages
   [repo]
   (->>
@@ -406,12 +401,6 @@ independent of format as format specific heading characters are stripped"
                      f))
                  form))
 
-(defn sort-page-random-blocks
-  "Blocks could be non consecutive."
-  [blocks]
-  (let [db (conn/get-db)]
-    (ldb/sort-page-random-blocks db blocks)))
-
 ;; Diverged of get-sorted-page-block-ids
 (defn get-sorted-page-block-ids-and-levels
   "page-name: the page name, original name
@@ -517,10 +506,6 @@ independent of format as format specific heading characters are stripped"
        (when-not (:block/name parent)
          parent)))))
 
-(defn get-non-consecutive-blocks
-  [blocks]
-  (ldb/get-non-consecutive-blocks (conn/get-db) blocks))
-
 (defn get-page-blocks-no-cache
   ([page]
    (get-page-blocks-no-cache (state/get-current-repo) page nil))
diff --git a/src/main/frontend/db/outliner.cljs b/src/main/frontend/db/outliner.cljs
deleted file mode 100644
index b20675f17..000000000
--- a/src/main/frontend/db/outliner.cljs
+++ /dev/null
@@ -1,17 +0,0 @@
-(ns frontend.db.outliner
-  "Db related fns for the outliner module"
-  (:require [datascript.core :as d]))
-
-(defn get-by-id
-  [conn id]
-  (try
-    (d/pull @conn '[*] id)
-    (catch :default _e nil)))
-
-;; key [:block/children parent-id]
-
-(def get-by-parent-id
-  '[:find (pull ?a [*])
-    :in $ ?id
-    :where
-    [?a :block/parent ?id]])
diff --git a/src/main/frontend/format/block.cljs b/src/main/frontend/format/block.cljs
index b6f1508c7..e38d11594 100644
--- a/src/main/frontend/format/block.cljs
+++ b/src/main/frontend/format/block.cljs
@@ -14,8 +14,7 @@
             [lambdaisland.glogi :as log]
             [datascript.core :as d]
             [logseq.db.frontend.property :as db-property]
-            [frontend.format.mldoc :as mldoc]
-            [frontend.worker.mldoc :as worker-mldoc]))
+            [frontend.format.mldoc :as mldoc]))
 
 (defn- update-extracted-block-properties
   "Updates DB graph blocks to ensure that built-in properties are using uuids
@@ -71,13 +70,6 @@ and handles unexpected failure."
   ([original-page-name with-id? with-timestamp?]
    (gp-block/page-name->map original-page-name with-id? (db/get-db (state/get-current-repo)) with-timestamp? (state/get-date-formatter))))
 
-(defn extract-refs-from-text
-  [text]
-  (worker-mldoc/extract-refs-from-text (state/get-current-repo)
-                                       (db/get-db (state/get-current-repo))
-                                       text
-                                       (state/get-date-formatter)))
-
 (defn- normalize-as-percentage
   [block]
   (some->> block
diff --git a/src/main/frontend/handler/property/util.cljs b/src/main/frontend/handler/property/util.cljs
index c3f868094..1917ab42d 100644
--- a/src/main/frontend/handler/property/util.cljs
+++ b/src/main/frontend/handler/property/util.cljs
@@ -2,11 +2,9 @@
   "Utility fns for properties that are for both file and db graphs.
   Some fns like lookup and get-property were written to easily be backwards
   compatible with file graphs"
-  (:require [frontend.config :as config]
-            [frontend.state :as state]
+  (:require [frontend.state :as state]
             [logseq.common.util :as common-util]
             [frontend.db :as db]
-            [frontend.util :as util]
             [logseq.db.frontend.property :as db-property]))
 
 (defn lookup
diff --git a/src/main/frontend/handler/repo.cljs b/src/main/frontend/handler/repo.cljs
index 9a1cb1ea6..48746910b 100644
--- a/src/main/frontend/handler/repo.cljs
+++ b/src/main/frontend/handler/repo.cljs
@@ -36,7 +36,6 @@
             [frontend.mobile.util :as mobile-util]
             [medley.core :as medley]
             [logseq.common.path :as path]
-            [logseq.common.config :as common-config]
             [frontend.db.listener :as db-listener]
             [frontend.db.rtc.op-mem-layer :as op-mem-layer]))
 
diff --git a/src/main/frontend/modules/outliner/datascript.cljs b/src/main/frontend/modules/outliner/datascript.cljs
index 5ed831693..73cf7618c 100644
--- a/src/main/frontend/modules/outliner/datascript.cljs
+++ b/src/main/frontend/modules/outliner/datascript.cljs
@@ -26,10 +26,6 @@
                                        v)))
                     x)))))
 
-(defn get-tx-id
-  [tx-report]
-  (get-in tx-report [:tempids :db/current-tx]))
-
 (defn update-refs-and-macros
   "When a block is deleted, refs are updated and macros associated with the block are deleted"
   [txs db repo opts set-state-fn]
diff --git a/src/main/frontend/persist_db/browser.cljs b/src/main/frontend/persist_db/browser.cljs
index e0d6d58e7..6ea1048db 100644
--- a/src/main/frontend/persist_db/browser.cljs
+++ b/src/main/frontend/persist_db/browser.cljs
@@ -13,8 +13,7 @@
             [electron.ipc :as ipc]
             [frontend.modules.outliner.pipeline :as pipeline]
             [clojure.edn :as edn]
-            [frontend.handler.worker :as worker-handler]
-            [frontend.db :as db]))
+            [frontend.handler.worker :as worker-handler]))
 
 (defonce *sqlite (atom nil))
 
diff --git a/src/main/frontend/util.cljc b/src/main/frontend/util.cljc
index 8840ec646..171a6d5fa 100644
--- a/src/main/frontend/util.cljc
+++ b/src/main/frontend/util.cljc
@@ -1149,8 +1149,6 @@
 #?(:cljs
    (def remove-first worker-util/remove-first))
 
-(def pprint clojure.pprint/pprint)
-
 #?(:cljs
    (defn backward-kill-word
      [input]
diff --git a/src/main/frontend/worker/db/fix.cljs b/src/main/frontend/worker/db/fix.cljs
index f294b857a..8ca17afd3 100644
--- a/src/main/frontend/worker/db/fix.cljs
+++ b/src/main/frontend/worker/db/fix.cljs
@@ -5,7 +5,6 @@
   2. For any block, its children should be connected by :block/left (no broken chain, no circle, no left to self)."
   (:require [datascript.core :as d]
             [cljs.pprint :as pprint]
-            [frontend.handler.notification :as notification]
             [logseq.db :as ldb]
             [frontend.worker.util :as util]))
 
diff --git a/src/test/frontend/db/outliner_test.cljs b/src/test/frontend/db/outliner_test.cljs
deleted file mode 100644
index 167cfd660..000000000
--- a/src/test/frontend/db/outliner_test.cljs
+++ /dev/null
@@ -1,30 +0,0 @@
-(ns frontend.db.outliner-test
-  (:require [cljs.test :refer [deftest is use-fixtures]]
-            [datascript.core :as d]
-            [frontend.core-test :as core-test]
-            [logseq.db :as db]
-            [frontend.test.fixtures :as fixtures]))
-
-(use-fixtures :each fixtures/reset-db)
-
-(deftest test-get-by-id
-  (let [conn (core-test/get-current-conn)
-        block-id "1"
-        data [{:block/uuid block-id}]
-        _ (d/transact! conn data)
-        result (db/get-by-id conn [:block/uuid block-id])]
-    (is (= block-id (:block/uuid result)))))
-
-(deftest test-get-by-parent-id
-  (let [conn (core-test/get-current-conn)
-        data [{:block/uuid "1"}
-              {:block/uuid "2"
-               :block/parent [:block/uuid "1"]
-               :block/left [:block/uuid "1"]}
-              {:block/uuid "3"
-               :block/parent [:block/uuid "1"]
-               :block/left [:block/uuid "2"]}]
-        _ (d/transact! conn data)
-        r (d/q db/get-by-parent-id @conn [:block/uuid "1"])
-        result (flatten r)]
-    (is (= ["2" "3"] (mapv :block/uuid result)))))
diff --git a/src/test/frontend/format/mldoc_test.cljs b/src/test/frontend/format/mldoc_test.cljs
index 64dbbe319..b3192c663 100644
--- a/src/test/frontend/format/mldoc_test.cljs
+++ b/src/test/frontend/format/mldoc_test.cljs
@@ -1,10 +1,11 @@
 (ns frontend.format.mldoc-test
-  (:require [frontend.format.mldoc :as mldoc]
-            [cljs.test :refer [deftest testing are]]))
+  (:require [frontend.worker.mldoc :as worker-mldoc]
+            [cljs.test :refer [deftest testing are]]
+            [frontend.test.helper :as test-helper]))
 
 (deftest test-extract-plain
   (testing "normalize date values"
-    (are [x y] (= (mldoc/extract-plain x) y)
+    (are [x y] (= (worker-mldoc/extract-plain test-helper/test-db x) y)
       "foo #book #[[nice test]]"
       "foo"