diff --git a/src/services/pis.services.js b/src/services/pis.services.ts
similarity index 66%
rename from src/services/pis.services.js
rename to src/services/pis.services.ts
index ead675d..b974cf3 100644
--- a/src/services/pis.services.js
+++ b/src/services/pis.services.ts
@@ -7,7 +7,7 @@ import { logger } from "../utils/logger.utils";
 
 const supported = ["GW", "UK"];
 
-async function findPisByOrigDest(start, end) {
+async function findPisByOrigDest(start: string, end: string) {
   logger.debug(
     `pisServices.findPisByOrigDest: Searching for Orig: ${start}, Dest: ${end}`
   );
@@ -31,7 +31,7 @@ async function findPisByOrigDest(start, end) {
   return await search;
 }
 
-async function findPisByCode(code) {
+async function findPisByCode(code: string) {
   logger.debug(`pisServices.findPisByCode: Searching for PIS code: ${code}`);
   const cleanCode = clean.removeNonNumeric(code);
   const query = {
@@ -41,14 +41,27 @@ async function findPisByCode(code) {
   return await search;
 }
 
-async function findByTiplocArray(tiplocArray) {
+async function findByTiplocArray(tiplocArray: string[]) {
   const query = {
     tiplocs: tiplocArray,
   };
-  const res = db.query("pis", query);
+  const res = await db.query("pis", query);
+  // If res is empty then try to find partial match
+  /* if (res.length) {
+    return res;
+  } else {
+    let partial = await findPartialMatchByTiploc(tiplocArray);
+    return partial
+  } */
   return await res;
 }
 
+async function findPartialMatchByTiploc(tiplocArray: string[]) {
+  // Do some magic here, similar to findPisByOrigDest but
+  // ensuring that the stops in the array match the last
+  // x number of items in the array.
+}
+
 module.exports = {
   supported,
   findPisByOrigDest,