diff --git a/SECURITY.md b/SECURITY.md
index 9d6cf6b81f5..dc920c827a8 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -7,7 +7,7 @@ As of September 2024 (and until this document is updated), only the v4.x.x and v
 **Note**: The v4.x.x LTS version will only receive high/critical severity fixes until April 2026. Any Medium/Low severity issues will not be fixed unless specific exceptions are made.
 
 | Version | Release Tag | Support Starts | Support Ends   | Security Updates Until | Notes                          |
-|---------|-------------|----------------|----------------|------------------------|--------------------------------|
+| ------- | ----------- | -------------- | -------------- | ---------------------- | ------------------------------ |
 | 5.x.x   | GA / Stable | September 2024 | Further Notice | Further Notice         | LTS                            |
 | 5.x.x   | RC          | N/A            | September 2024 | N/A                    | Not Supported                  |
 | 5.x.x   | Beta        | N/A            | N/A            | N/A                    | Not Supported                  |
diff --git a/packages/core/upload/admin/.eslintrc b/packages/core/upload/admin/.eslintrc
new file mode 100644
index 00000000000..46fc0d13cb4
--- /dev/null
+++ b/packages/core/upload/admin/.eslintrc
@@ -0,0 +1,12 @@
+{
+  "root": true,
+  "overrides": [
+    {
+      "files": ["**/*.js", "**/*.jsx"],
+      "extends": ["custom/front"],
+      "rules": {
+        "import/extensions": "off"
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/packages/core/upload/admin/src/components/Breadcrumbs/CrumbSimpleMenuAsync.jsx b/packages/core/upload/admin/src/components/Breadcrumbs/CrumbSimpleMenuAsync.jsx
index f863ede6e14..ad687f57f72 100644
--- a/packages/core/upload/admin/src/components/Breadcrumbs/CrumbSimpleMenuAsync.jsx
+++ b/packages/core/upload/admin/src/components/Breadcrumbs/CrumbSimpleMenuAsync.jsx
@@ -1,8 +1,7 @@
 import React, { useState } from 'react';
 
 import { useQueryParams } from '@strapi/admin/strapi-admin';
-import { Loader } from '@strapi/design-system';
-import { CrumbSimpleMenu, MenuItem } from '@strapi/design-system';
+import { CrumbSimpleMenu, Loader, MenuItem } from '@strapi/design-system';
 import PropTypes from 'prop-types';
 import { useIntl } from 'react-intl';
 import { NavLink, useLocation } from 'react-router-dom';
diff --git a/packages/core/upload/admin/src/components/FolderCard/tests/FolderCard.test.jsx b/packages/core/upload/admin/src/components/FolderCard/tests/FolderCard.test.jsx
index 43aa8a8a796..da07039c877 100644
--- a/packages/core/upload/admin/src/components/FolderCard/tests/FolderCard.test.jsx
+++ b/packages/core/upload/admin/src/components/FolderCard/tests/FolderCard.test.jsx
@@ -19,7 +19,7 @@ const ComponentFixture = ({ to, ...props }) => {
         <FolderCard
           id={ID_FIXTURE}
           ariaLabel="Folder 1"
-          startAction={<></>}
+          startAction={null}
           onClick={() => {}}
           to={to}
           {...props}
diff --git a/packages/core/upload/admin/src/pages/App/ConfigureTheView/state/reducer.js b/packages/core/upload/admin/src/pages/App/ConfigureTheView/state/reducer.js
index c24678d5fb9..baf069bff6c 100644
--- a/packages/core/upload/admin/src/pages/App/ConfigureTheView/state/reducer.js
+++ b/packages/core/upload/admin/src/pages/App/ConfigureTheView/state/reducer.js
@@ -5,7 +5,12 @@ import set from 'lodash/set';
 import { ON_CHANGE, SET_LOADED } from './actionTypes';
 import { init, initialState } from './init';
 
-const reducer = (state = initialState, action) =>
+const reducer = (
+  state = initialState,
+  action = {
+    type: '',
+  }
+) =>
   // eslint-disable-next-line consistent-return
   produce(state, (draftState) => {
     switch (action.type) {
diff --git a/packages/core/upload/admin/src/utils/urlYupSchema.js b/packages/core/upload/admin/src/utils/urlYupSchema.js
index c33a043b6e1..70330926a0f 100644
--- a/packages/core/upload/admin/src/utils/urlYupSchema.js
+++ b/packages/core/upload/admin/src/utils/urlYupSchema.js
@@ -6,6 +6,7 @@ import getTrad from './getTrad';
 export const urlSchema = yup.object().shape({
   urls: yup.string().test({
     name: 'isUrlValid',
+    // eslint-disable-next-line no-template-curly-in-string
     message: '${path}',
     test(values = '') {
       const urls = values.split(/\r?\n/);
diff --git a/packages/core/upload/admin/tests/handlers.js b/packages/core/upload/admin/tests/handlers.ts
similarity index 90%
rename from packages/core/upload/admin/tests/handlers.js
rename to packages/core/upload/admin/tests/handlers.ts
index c8de7cc25fe..b4051630d40 100644
--- a/packages/core/upload/admin/tests/handlers.js
+++ b/packages/core/upload/admin/tests/handlers.ts
@@ -1,6 +1,13 @@
 import { rest } from 'msw';
 import qs from 'qs';
 
+// Define the expected structure of your query parameters
+interface CustomQuery extends qs.ParsedQs {
+  filters?: {
+    $and?: Array<{ parent: { id: string } }>;
+  };
+}
+
 const handlers = [
   rest.get('/upload/configuration', async (req, res, ctx) => {
     return res(
@@ -48,7 +55,7 @@ const handlers = [
     );
   }),
   rest.get('/upload/folders', async (req, res, ctx) => {
-    const query = qs.parse(req.url.search.slice(1));
+    const query: CustomQuery = qs.parse(req.url.search.slice(1));
 
     if (query._q) {
       return res(
@@ -183,13 +190,13 @@ const handlers = [
   }),
 
   rest.get('*/an-image.png', (req, res, ctx) =>
-    res(ctx.set('Content-Type', 'image/png'), ctx.body())
+    res(ctx.set('Content-Type', 'image/png'), ctx.body('Successful response'))
   ),
   rest.get('*/a-pdf.pdf', (req, res, ctx) =>
-    res(ctx.set('Content-Type', 'application/pdf'), ctx.body())
+    res(ctx.set('Content-Type', 'application/pdf'), ctx.body('Successful response'))
   ),
   rest.get('*/a-video.mp4', (req, res, ctx) =>
-    res(ctx.set('Content-Type', 'video/mp4'), ctx.body())
+    res(ctx.set('Content-Type', 'video/mp4'), ctx.body('Successful response'))
   ),
   rest.get('*/not-working-like-cors.lutin', (req, res, ctx) => res(ctx.json({}))),
   rest.get('*/some-where-not-existing.jpg', (req, res) => res.networkError('Failed to fetch')),
diff --git a/packages/core/upload/admin/tests/setup.js b/packages/core/upload/admin/tests/setup.ts
similarity index 100%
rename from packages/core/upload/admin/tests/setup.js
rename to packages/core/upload/admin/tests/setup.ts
diff --git a/packages/core/upload/admin/tests/utils.jsx b/packages/core/upload/admin/tests/utils.ts
similarity index 100%
rename from packages/core/upload/admin/tests/utils.jsx
rename to packages/core/upload/admin/tests/utils.ts
diff --git a/packages/core/upload/admin/tsconfig.build.json b/packages/core/upload/admin/tsconfig.build.json
new file mode 100644
index 00000000000..6af52a63b95
--- /dev/null
+++ b/packages/core/upload/admin/tsconfig.build.json
@@ -0,0 +1,10 @@
+{
+  "extends": "tsconfig/client.json",
+  "compilerOptions": {
+    "rootDir": "../",
+    "baseUrl": ".",
+    "outDir": "./dist"
+  },
+  "include": ["./src", "../shared", "../package.json"],
+  "exclude": ["**/__mocks__", "./src/**/tests", "**/*.test.*"]
+}
diff --git a/packages/core/upload/admin/tsconfig.json b/packages/core/upload/admin/tsconfig.json
new file mode 100644
index 00000000000..17d69ac5c6f
--- /dev/null
+++ b/packages/core/upload/admin/tsconfig.json
@@ -0,0 +1,11 @@
+{
+  "extends": "tsconfig/client.json",
+  "compilerOptions": {
+    "rootDir": "../",
+    "baseUrl": ".",
+    "paths": {
+      "@tests/*": ["./tests/*"]
+    }
+  },
+  "include": ["../package.json", "./src", "../shared", "./tests"]
+}
diff --git a/packages/core/upload/jest.config.front.js b/packages/core/upload/jest.config.front.js
index ccb2e583219..1d67f26ac95 100644
--- a/packages/core/upload/jest.config.front.js
+++ b/packages/core/upload/jest.config.front.js
@@ -6,5 +6,5 @@ module.exports = {
   moduleNameMapper: {
     '^@tests/(.*)$': '<rootDir>/admin/tests/$1',
   },
-  setupFilesAfterEnv: ['./admin/tests/setup.js'],
+  setupFilesAfterEnv: ['./admin/tests/setup.ts'],
 };
diff --git a/packages/core/upload/jsconfig.json b/packages/core/upload/jsconfig.json
deleted file mode 100644
index 986fd6eba52..00000000000
--- a/packages/core/upload/jsconfig.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "compilerOptions": {
-    "baseUrl": ".",
-    "paths": {
-      "@tests/*": ["./admin/tests/*"]
-    }
-  }
-}
diff --git a/packages/core/upload/package.json b/packages/core/upload/package.json
index f2191b188dc..ec8eeb80fd7 100644
--- a/packages/core/upload/package.json
+++ b/packages/core/upload/package.json
@@ -17,11 +17,19 @@
   ],
   "exports": {
     "./strapi-admin": {
+      "types": "./dist/admin/src/index.d.ts",
       "source": "./admin/src/index.js",
       "import": "./dist/admin/index.mjs",
       "require": "./dist/admin/index.js",
       "default": "./dist/admin/index.js"
     },
+    "./_internal/shared": {
+      "types": "./dist/shared/index.d.ts",
+      "source": "./shared/index.ts",
+      "import": "./dist/shared/index.mjs",
+      "require": "./dist/shared/index.js",
+      "default": "./dist/shared/index.js"
+    },
     "./strapi-server": {
       "types": "./dist/server/src/index.d.ts",
       "source": "./server/src/index.ts",
@@ -41,6 +49,9 @@
     "lint": "run -T eslint .",
     "test:front": "run -T cross-env IS_EE=true jest --config ./jest.config.front.js",
     "test:unit": "run -T jest",
+    "test:ts:back": "run -T tsc --noEmit -p server/tsconfig.json",
+    "test:ts:front": "run -T tsc -p admin/tsconfig.json",
+    "test:front:watch": "run -T cross-env IS_EE=true jest --config ./jest.config.front.js --watch",
     "test:unit:watch": "run -T jest --watch",
     "watch": "pack-up watch"
   },
diff --git a/packages/core/upload/packup.config.ts b/packages/core/upload/packup.config.ts
index b531c51a21f..2c398928e51 100644
--- a/packages/core/upload/packup.config.ts
+++ b/packages/core/upload/packup.config.ts
@@ -3,9 +3,11 @@ import { Config, defineConfig } from '@strapi/pack-up';
 const config: Config = defineConfig({
   bundles: [
     {
-      source: './admin/src/index.js',
+      types: './dist/admin/src/index.d.ts',
+      source: './admin/src/index.js', // TODO: change it with the .ts file
       import: './dist/admin/index.mjs',
       require: './dist/admin/index.js',
+      tsconfig: './admin/tsconfig.build.json',
       runtime: 'web',
     },
     {
diff --git a/packages/core/upload/server/src/bootstrap.ts b/packages/core/upload/server/src/bootstrap.ts
index 5e41bb2e435..af3bb3712f1 100644
--- a/packages/core/upload/server/src/bootstrap.ts
+++ b/packages/core/upload/server/src/bootstrap.ts
@@ -25,6 +25,7 @@ export async function bootstrap({ strapi }: { strapi: Core.Strapi }) {
       config &&
       Object.keys(defaultValue).every((key) => Object.prototype.hasOwnProperty.call(config, key))
     ) {
+      // eslint-disable-next-line no-continue
       continue;
     }
 
diff --git a/packages/core/upload/server/src/controllers/validation/admin/folder-file.ts b/packages/core/upload/server/src/controllers/validation/admin/folder-file.ts
index d0f0b3363ad..ed4378ea43a 100644
--- a/packages/core/upload/server/src/controllers/validation/admin/folder-file.ts
+++ b/packages/core/upload/server/src/controllers/validation/admin/folder-file.ts
@@ -29,7 +29,7 @@ const validateStructureMoveManyFoldersFilesSchema = yup
 
 const validateDuplicatesMoveManyFoldersFilesSchema = yup
   .object()
-  .test('are-folders-unique', 'some folders already exist', async function (value) {
+  .test('are-folders-unique', 'some folders already exist', async function areFoldersUnique(value) {
     const { folderIds, destinationFolderId } = value;
     if (isEmpty(folderIds)) return true;
 
@@ -58,7 +58,7 @@ const validateMoveFoldersNotInsideThemselvesSchema = yup
   .test(
     'dont-move-inside-self',
     'folders cannot be moved inside themselves or one of its children',
-    async function (value) {
+    async function validateMoveFoldersNotInsideThemselves(value) {
       const { folderIds, destinationFolderId } = value;
       if (destinationFolderId === null || isEmpty(folderIds)) return true;
 
diff --git a/packages/core/upload/server/src/services/__tests__/upload/uploadImage.test.ts b/packages/core/upload/server/src/services/__tests__/upload/uploadImage.test.ts
index 8256cceb3aa..4ef3439c87e 100644
--- a/packages/core/upload/server/src/services/__tests__/upload/uploadImage.test.ts
+++ b/packages/core/upload/server/src/services/__tests__/upload/uploadImage.test.ts
@@ -47,7 +47,7 @@ const getFileData = (filePath: string) => ({
   alternativeText: 'image.png',
   caption: 'image.png',
   ext: '.png',
-  folder: null,
+  folder: undefined,
   folderPath: '/',
   filepath: filePath,
   getStream: () => fs.createReadStream(filePath),
@@ -56,6 +56,7 @@ const getFileData = (filePath: string) => ({
   size: 4,
   width: 1500,
   tmpWorkingDirectory,
+  name: 'image.png',
 });
 
 describe('Upload image', () => {
diff --git a/packages/core/upload/server/src/services/extensions/__tests__/sign-media.test.ts b/packages/core/upload/server/src/services/extensions/__tests__/sign-media.test.ts
index 3e78e176cc9..ab1569d9f92 100644
--- a/packages/core/upload/server/src/services/extensions/__tests__/sign-media.test.ts
+++ b/packages/core/upload/server/src/services/extensions/__tests__/sign-media.test.ts
@@ -1,10 +1,11 @@
+import type { UID } from '@strapi/types';
 import { signEntityMedia } from '../utils';
 import { getService } from '../../../utils';
 
 jest.mock('../../../utils');
 
 describe('Upload | extensions | entity-manager', () => {
-  const modelUID = 'model';
+  const modelUID = 'model' as UID.Schema;
   const componentUID = 'component';
 
   const models = {
@@ -71,6 +72,18 @@ describe('Upload | extensions | entity-manager', () => {
       spySignFileUrls = jest.fn();
       jest.mocked(getService).mockImplementation(() => ({
         signFileUrls: spySignFileUrls,
+        getFolderPath: jest.fn(),
+        deleteByIds: jest.fn(),
+        computeMetrics: jest.fn().mockResolvedValue({
+          assetNumber: 0,
+          folderNumber: 0,
+          averageDepth: 0,
+          maxDepth: 0,
+          averageDeviationDepth: 0,
+        }),
+        sendMetrics: jest.fn().mockResolvedValue(undefined),
+        ensureWeeklyStoredCronSchedule: jest.fn().mockResolvedValue(undefined),
+        registerCron: jest.fn().mockResolvedValue(undefined),
       }));
 
       global.strapi = {