diff --git a/data.ts b/data.ts
index d6324e6..7f439a4 100644
--- a/data.ts
+++ b/data.ts
@@ -17,7 +17,7 @@ import chunk from 'lodash/chunk'
 const jsonFilename = 'sandbox-search.json'
 const jsFilename = 'sandbox-search.js'
 
-async function getData(path: string) {
+async function getData(path: string): Promise<object[]> {
   let result
   const jsonPath = join(path, jsonFilename)
   const jsPath = join(path, jsFilename)
@@ -47,7 +47,7 @@ export async function populate(path: string, opts: ClientOptions) {
     const client = new Client(opts)
     const batch_size = 10
     const batches = chunk(data, batch_size)
-    batches.forEach(async (batch: object[]) => {
+    batches.forEach(async (batch) => {
       await client.bulk({ body: batch })
     })
   }
diff --git a/package-lock.json b/package-lock.json
index b02e4ec..91d575b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,6 +21,7 @@
       "devDependencies": {
         "@nasa-gcn/eslint-config-gitignore": "^0.0.1",
         "@tsconfig/node14": "^1.0.3",
+        "@types/lodash": "^4.14.202",
         "@types/make-fetch-happen": "^10.0.1",
         "@types/node": "^18.13.0",
         "@types/tar": "^6.1.4",
@@ -545,6 +546,12 @@
       "integrity": "sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==",
       "dev": true
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.202",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.202.tgz",
+      "integrity": "sha512-OvlIYQK9tNneDlS0VN54LLd5uiPCBOp7gS5Z0f1mjoJYBrtStzgmJBxONW3U6OZqdtNzZPmn9BS/7WI7BFFcFQ==",
+      "dev": true
+    },
     "node_modules/@types/make-fetch-happen": {
       "version": "10.0.1",
       "resolved": "https://registry.npmjs.org/@types/make-fetch-happen/-/make-fetch-happen-10.0.1.tgz",
diff --git a/package.json b/package.json
index 209eaa0..f1ba9cf 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
   "devDependencies": {
     "@nasa-gcn/eslint-config-gitignore": "^0.0.1",
     "@tsconfig/node14": "^1.0.3",
+    "@types/lodash": "^4.14.202",
     "@types/make-fetch-happen": "^10.0.1",
     "@types/node": "^18.13.0",
     "@types/tar": "^6.1.4",