Allow ts tests

packages/string-templates/jest.config.js

@@ -4,6 +4,7 @@
  */
 
 module.exports = {
+  preset: "ts-jest",
   // All imported modules in your tests should be mocked automatically
   // automock: false,
 

packages/string-templates/src/index.ts

@@ -102,7 +102,11 @@ export async function processObject(object, context, opts) {
  * @param {object|undefined} [opts] optional - specify some options for processing.
  * @returns {Promise<string>} The enriched string, all templates should have been replaced if they can be.
  */
-export async function processString(string, context, opts) {
+export async function processString(
+  string: string,
+  context: object,
+  opts?: { noHelpers: boolean }
+) {
   // TODO: carry out any async calls before carrying out async call
   return processStringSync(string, context, opts)
 }

packages/string-templates/test/basic.spec.ts

@@ -76,7 +76,7 @@ describe("Test that the object processing works correctly", () => {
   it("should fail gracefully when object passed in has cycles", async () => {
     let error = null
     try {
-      const innerObj = { a: "thing {{ a }}" }
+      const innerObj: any = { a: "thing {{ a }}" }
       innerObj.b = innerObj
       await processObject(innerObj, { a: 1 })
     } catch (err) {