diff --git a/src/commands/deploy/deploy.ts b/src/commands/deploy/deploy.ts
index 1a5ab4f012e..d5d9ce70813 100644
--- a/src/commands/deploy/deploy.ts
+++ b/src/commands/deploy/deploy.ts
@@ -411,7 +411,6 @@ const runDeploy = async ({
   deployToProduction,
   // @ts-expect-error TS(7031) FIXME: Binding element 'functionsConfig' implicitly has a... Remove this comment to see the full error message
   functionsConfig,
-  // @ts-expect-error TS(7031) FIXME: Binding element 'functionsFolder' implicitly has a... Remove this comment to see the full error message
   functionsFolder,
   // @ts-expect-error TS(7031) FIXME: Binding element 'options' implicitly has an 'a... Remove this comment to see the full error message
   options,
@@ -429,6 +428,8 @@ const runDeploy = async ({
   skipFunctionsCache,
   // @ts-expect-error TS(7031) FIXME: Binding element 'title' implicitly has an 'any' ty... Remove this comment to see the full error message
   title,
+}: {
+  functionsFolder?: string
 }) => {
   let results
   let deployId
@@ -444,13 +445,14 @@ const runDeploy = async ({
     results = await api.createSiteDeploy({ siteId, title, body: { draft, branch: alias } })
     deployId = results.id
 
-    // @ts-expect-error TS(2345) FIXME: Argument of type '{ base: any; packagePath: any; }... Remove this comment to see the full error message
     const internalFunctionsFolder = await getInternalFunctionsDir({ base: site.root, packagePath })
 
     // The order of the directories matter: zip-it-and-ship-it will prioritize
     // functions from the rightmost directories. In this case, we want user
     // functions to take precedence over internal functions.
-    const functionDirectories = [internalFunctionsFolder, functionsFolder].filter(Boolean)
+    const functionDirectories = [internalFunctionsFolder, functionsFolder].filter((folder): folder is string =>
+      Boolean(folder),
+    )
     const manifestPath = skipFunctionsCache ? null : await getFunctionsManifestPath({ base: site.root, packagePath })
 
     const redirectsPath = `${deployFolder}/_redirects`
@@ -475,11 +477,10 @@ const runDeploy = async ({
     uploadDeployBlobs({ deployId, siteId, silent, options, cachedConfig: command.netlify.cachedConfig })
 
     results = await deploySite(api, siteId, deployFolder, {
+      // @ts-expect-error FIXME
       config,
-      // @ts-expect-error TS(2322) FIXME: Type 'any[]' is not assignable to type 'never[]'.
       fnDir: functionDirectories,
       functionsConfig,
-      // @ts-expect-error TS(2322) FIXME: Type '(event: any) => void' is not assignable to t... Remove this comment to see the full error message
       statusCb: silent ? () => {} : deployProgressCb(),
       deployTimeout,
       syncFileLimit: SYNC_FILE_LIMIT,
@@ -732,6 +733,7 @@ const prepAndRunDeploy = async ({
   })
 
   const results = await runDeploy({
+    // @ts-expect-error FIXME
     alias,
     api,
     command,
diff --git a/src/lib/functions/server.ts b/src/lib/functions/server.ts
index 05aefd9e9ff..5aa23a301c1 100644
--- a/src/lib/functions/server.ts
+++ b/src/lib/functions/server.ts
@@ -279,9 +279,8 @@ export const startFunctionsServer = async (options) => {
     siteUrl,
     timeouts,
   } = options
-  // @ts-expect-error TS(2345) FIXME: Argument of type '{ base: any; }' is not assignabl... Remove this comment to see the full error message
   const internalFunctionsDir = await getInternalFunctionsDir({ base: site.root })
-  const functionsDirectories = []
+  const functionsDirectories: string[] = []
   let manifest
 
   // If the `loadDistFunctions` parameter is sent, the functions server will
diff --git a/src/utils/deploy/deploy-site.ts b/src/utils/deploy/deploy-site.ts
index c6010c8b655..32b0f5965c0 100644
--- a/src/utils/deploy/deploy-site.ts
+++ b/src/utils/deploy/deploy-site.ts
@@ -62,9 +62,18 @@ export const deploySite = async (
     tmpDir = temporaryDirectory(),
     // @ts-expect-error TS(2525) FIXME: Initializer provides no value for this binding ele... Remove this comment to see the full error message
     workingDir,
+  }: {
+    concurrentHash?: number
+    concurrentUpload?: number
+    deployTimeout?: number
+    draft?: boolean
+    maxRetry?: number
+    statusCb?: (status: { type: string; msg: string; phase: string }) => void
+    syncFileLimit?: number
+    tmpDir?: string
+    fnDir?: string[]
   } = {},
 ) => {
-  // @ts-expect-error TS(2554) FIXME: Expected 0 arguments, but got 1.
   statusCb({
     type: 'hashing',
     msg: `Hashing files...`,
@@ -115,7 +124,6 @@ export const deploySite = async (
     edgeFunctionsCount > 0 && 'edge functions',
   ])
 
-  // @ts-expect-error TS(2554) FIXME: Expected 0 arguments, but got 1.
   statusCb({
     type: 'hashing',
     msg: `Finished hashing ${stats}`,
@@ -141,7 +149,6 @@ instead of manual deployment.
 For more information, visit https://ntl.fyi/cli-native-modules.`)
   }
 
-  // @ts-expect-error TS(2554) FIXME: Expected 0 arguments, but got 1.
   statusCb({
     type: 'create-deploy',
     msg: 'CDN diffing files...',
@@ -168,7 +175,6 @@ For more information, visit https://ntl.fyi/cli-native-modules.`)
 
   const { required: requiredFiles, required_functions: requiredFns } = deploy
 
-  // @ts-expect-error TS(2554) FIXME: Expected 0 arguments, but got 1.
   statusCb({
     type: 'create-deploy',
     msg: `CDN requesting ${requiredFiles.length} files${
@@ -183,7 +189,6 @@ For more information, visit https://ntl.fyi/cli-native-modules.`)
 
   await uploadFiles(api, deployId, uploadList, { concurrentUpload, statusCb, maxRetry })
 
-  // @ts-expect-error TS(2554) FIXME: Expected 0 arguments, but got 1.
   statusCb({
     type: 'wait-for-deploy',
     msg: 'Waiting for deploy to go live...',
@@ -191,7 +196,6 @@ For more information, visit https://ntl.fyi/cli-native-modules.`)
   })
   deploy = await waitForDeploy(api, deployId, siteId, deployTimeout)
 
-  // @ts-expect-error TS(2554) FIXME: Expected 0 arguments, but got 1.
   statusCb({
     type: 'wait-for-deploy',
     msg: draft ? 'Draft deploy is live!' : 'Deploy is live!',
diff --git a/src/utils/detect-server-settings.ts b/src/utils/detect-server-settings.ts
index 18bc5a1904e..942174ff167 100644
--- a/src/utils/detect-server-settings.ts
+++ b/src/utils/detect-server-settings.ts
@@ -8,7 +8,6 @@ import getPort from 'get-port'
 import { detectFrameworkSettings } from './build-info.js'
 import { NETLIFYDEVWARN, chalk, log } from './command-helpers.js'
 import { acquirePort } from './dev.js'
-import { getInternalFunctionsDir } from './functions/functions.js'
 import { getPluginsToAutoInstall } from './init/utils.js'
 
 /** @param {string} str */
@@ -342,9 +341,6 @@ const detectServerSettings = async (devConfig, flags, command) => {
   })
   // @ts-expect-error TS(2339) FIXME: Property 'functions' does not exist on type '{}'.
   const functionsDir = devConfig.functions || settings.functions
-  // @ts-expect-error TS(2345) FIXME: Argument of type '{ base: any; }' is not assignabl... Remove this comment to see the full error message
-  const internalFunctionsDir = await getInternalFunctionsDir({ base: command.workingDir })
-  const shouldStartFunctionsServer = Boolean(functionsDir || internalFunctionsDir)
 
   return {
     ...settings,
@@ -352,7 +348,7 @@ const detectServerSettings = async (devConfig, flags, command) => {
     jwtSecret: devConfig.jwtSecret || 'secret',
     jwtRolePath: devConfig.jwtRolePath || 'app_metadata.authorization.roles',
     functions: functionsDir,
-    ...(shouldStartFunctionsServer && { functionsPort: await getPort({ port: devConfig.functionsPort || 0 }) }),
+    functionsPort: await getPort({ port: devConfig.functionsPort || 0 }),
     ...(devConfig.https && { https: await readHttpsSettings(devConfig.https) }),
   }
 }
diff --git a/src/utils/functions/functions.ts b/src/utils/functions/functions.ts
index d963cbda1d8..23ce9fc4836 100644
--- a/src/utils/functions/functions.ts
+++ b/src/utils/functions/functions.ts
@@ -44,14 +44,16 @@ export const getFunctionsServePath = ({ base, packagePath = '' }) => {
 
 /**
  * Retrieves the internal functions directory and creates it if ensureExists is provided
- * @param {object} config
- * @param {string} config.base
- * @param {boolean=} config.ensureExists
- * @param {string} config.packagePath
- * @returns
  */
-// @ts-expect-error TS(7031) FIXME: Binding element 'base' implicitly has an 'any' typ... Remove this comment to see the full error message
-export const getInternalFunctionsDir = async ({ base, ensureExists, packagePath = '' }) => {
+export const getInternalFunctionsDir = async ({
+  base,
+  ensureExists,
+  packagePath = '',
+}: {
+  base: string
+  ensureExists?: boolean
+  packagePath?: string
+}) => {
   const path = resolve(base, packagePath, getPathInProject([INTERNAL_FUNCTIONS_FOLDER]))
 
   if (ensureExists) {