diff --git a/database/getWorkOrderMilestones.js b/database/getWorkOrderMilestones.js
index c668e5eb..7b2f9a03 100644
--- a/database/getWorkOrderMilestones.js
+++ b/database/getWorkOrderMilestones.js
@@ -49,14 +49,12 @@ function buildWhereClause(filters) {
     if ((filters.workOrderTypeIds ?? '') !== '' &&
         commaSeparatedNumbersRegex.test(filters.workOrderTypeIds)) {
         sqlWhereClause +=
-            ' and w.workOrderTypeId in (' + filters.workOrderTypeIds + ')';
+            ` and w.workOrderTypeId in (${filters.workOrderTypeIds})`;
     }
-    if ((filters.workOrderMilestoneTypeIds ?? '') !== '' &&
+    if (filters.workOrderMilestoneTypeIds !== undefined &&
+        filters.workOrderMilestoneTypeIds !== '' &&
         commaSeparatedNumbersRegex.test(filters.workOrderMilestoneTypeIds)) {
-        sqlWhereClause +=
-            ' and m.workOrderMilestoneTypeId in (' +
-                filters.workOrderMilestoneTypeIds +
-                ')';
+        sqlWhereClause += ` and m.workOrderMilestoneTypeId in (${filters.workOrderMilestoneTypeIds})`;
     }
     return {
         sqlWhereClause,
diff --git a/database/getWorkOrderMilestones.ts b/database/getWorkOrderMilestones.ts
index 4113633b..80657fe0 100644
--- a/database/getWorkOrderMilestones.ts
+++ b/database/getWorkOrderMilestones.ts
@@ -1,4 +1,5 @@
 import {
+  type DateString,
   dateIntegerToString,
   dateStringToInteger,
   dateToInteger,
@@ -100,7 +101,7 @@ function buildWhereClause(filters: WorkOrderMilestoneFilters): {
   if ((filters.workOrderMilestoneDateString ?? '') !== '') {
     sqlWhereClause += ' and m.workOrderMilestoneDate = ?'
     sqlParameters.push(
-      dateStringToInteger(filters.workOrderMilestoneDateString!)
+      dateStringToInteger(filters.workOrderMilestoneDateString as DateString)
     )
   }
 
@@ -109,17 +110,15 @@ function buildWhereClause(filters: WorkOrderMilestoneFilters): {
     commaSeparatedNumbersRegex.test(filters.workOrderTypeIds!)
   ) {
     sqlWhereClause +=
-      ' and w.workOrderTypeId in (' + filters.workOrderTypeIds! + ')'
+      ` and w.workOrderTypeId in (${filters.workOrderTypeIds})`
   }
 
   if (
-    (filters.workOrderMilestoneTypeIds ?? '') !== '' &&
+    filters.workOrderMilestoneTypeIds !== undefined &&
+    filters.workOrderMilestoneTypeIds !== '' &&
     commaSeparatedNumbersRegex.test(filters.workOrderMilestoneTypeIds!)
   ) {
-    sqlWhereClause +=
-      ' and m.workOrderMilestoneTypeId in (' +
-      filters.workOrderMilestoneTypeIds! +
-      ')'
+    sqlWhereClause += ` and m.workOrderMilestoneTypeId in (${filters.workOrderMilestoneTypeIds})`
   }
 
   return {
diff --git a/helpers/functions.api.ts b/helpers/functions.api.ts
index 5f5a4e37..db9ce960 100644
--- a/helpers/functions.api.ts
+++ b/helpers/functions.api.ts
@@ -11,7 +11,7 @@ let apiKeys: Record<string, string>
 async function loadApiKeys(): Promise<void> {
   try {
     const fileData = await fs.readFile(apiKeyPath, 'utf8')
-    apiKeys = JSON.parse(fileData)
+    apiKeys = JSON.parse(fileData) as Record<string, string>
   } catch (error) {
     debug(error)
     apiKeys = {}
diff --git a/helpers/functions.authentication.js b/helpers/functions.authentication.js
index bb6851a4..3a04f484 100644
--- a/helpers/functions.authentication.js
+++ b/helpers/functions.authentication.js
@@ -6,7 +6,7 @@ async function authenticateViaActiveDirectory(userName, password) {
     return await new Promise((resolve) => {
         try {
             const ad = new ActiveDirectory(activeDirectoryConfig);
-            ad.authenticate(userDomain + '\\' + userName, password, (error, auth) => {
+            ad.authenticate(`${userDomain}\\${userName}`, password, (error, auth) => {
                 let authenticated = false;
                 if ((error ?? '') === '') {
                     authenticated = auth;
diff --git a/helpers/functions.authentication.ts b/helpers/functions.authentication.ts
index c7fa8a9b..26d729a0 100644
--- a/helpers/functions.authentication.ts
+++ b/helpers/functions.authentication.ts
@@ -4,7 +4,8 @@ import * as configFunctions from './functions.config.js'
 
 const userDomain = configFunctions.getConfigProperty('application.userDomain')
 
-const activeDirectoryConfig = configFunctions.getConfigProperty('activeDirectory')
+const activeDirectoryConfig =
+  configFunctions.getConfigProperty('activeDirectory')
 
 async function authenticateViaActiveDirectory(
   userName: string,
@@ -14,7 +15,7 @@ async function authenticateViaActiveDirectory(
     try {
       const ad = new ActiveDirectory(activeDirectoryConfig)
 
-      ad.authenticate(userDomain + '\\' + userName, password, (error, auth) => {
+      ad.authenticate(`${userDomain}\\${userName}`, password, (error, auth) => {
         let authenticated = false
 
         if ((error ?? '') === '') {
diff --git a/test/functions.ts b/test/functions.ts
index f47493e1..ed9574ac 100644
--- a/test/functions.ts
+++ b/test/functions.ts
@@ -19,6 +19,7 @@ describe('config.cemetery.ssm', () => {
 
 describe('functions.cache', () => {
   const badId = -3
+  // eslint-disable-next-line no-secrets/no-secrets
   const badName = 'qwertyuiopasdfghjklzxcvbnm'
 
   before(() => {
@@ -477,7 +478,7 @@ describe('functions.user', () => {
     it('authenticates with a valid API key', async () => {
       const apiKeysJSON: Record<string, string> = JSON.parse(
         fs.readFileSync('data/apiKeys.json', 'utf8')
-      )
+      ) as Record<string, string>
 
       const apiKey = Object.values(apiKeysJSON)[0]