diff --git a/packages/string-templates/src/index.ts b/packages/string-templates/src/index.ts
index 2549d0b34c..b5d5590050 100644
--- a/packages/string-templates/src/index.ts
+++ b/packages/string-templates/src/index.ts
@@ -105,7 +105,7 @@ export async function processObject(object, context, opts?) {
 export async function processString(
   string: string,
   context: object,
-  opts?: { noHelpers: boolean }
+  opts?: { noHelpers?: boolean; escapeNewlines?: boolean }
 ) {
   // TODO: carry out any async calls before carrying out async call
   return processStringSync(string, context, opts)
@@ -367,7 +367,7 @@ export function doesContainString(template, string) {
 export function convertToJS(hbs) {
   const blocks = findHBSBlocks(hbs)
   let js = "return `",
-    prevBlock = null
+    prevBlock: string | null = null
   const variables = {}
   if (blocks.length === 0) {
     js += hbs
diff --git a/packages/string-templates/test/escapes.spec.ts b/packages/string-templates/test/escapes.spec.ts
index caa2f7d0c1..ffc72a6b92 100644
--- a/packages/string-templates/test/escapes.spec.ts
+++ b/packages/string-templates/test/escapes.spec.ts
@@ -1,4 +1,4 @@
-const { processString } = require("../src/index.js")
+import { processString } from "../src/index"
 
 describe("Handling context properties with spaces in their name", () => {
   it("should allow through literal specifiers", async () => {
diff --git a/packages/string-templates/test/hbsToJs.spec.ts b/packages/string-templates/test/hbsToJs.spec.ts
index 08d8ff5f67..f8b4c2fca9 100644
--- a/packages/string-templates/test/hbsToJs.spec.ts
+++ b/packages/string-templates/test/hbsToJs.spec.ts
@@ -1,4 +1,4 @@
-const { convertToJS } = require("../src/index.js")
+import { convertToJS } from "../src/index"
 
 function checkLines(response, lines) {
   const toCheck = response.split("\n")