feat: add $wait(milliseconds) function

src/helpers/jsonataFunctions/transform.ts

@@ -66,6 +66,7 @@ export const transform = async (input, expression: string, extraBindings: Record
     bindings.__finalize = runtime.finalize;
     bindings.__castToFhir = runtime.castToFhir;
     bindings.__flashMerge = runtime.flashMerge;
+    bindings.wait = runtime.wait;
     bindings.reference = fhirFuncs.reference;
     bindings.resourceId = fhirFuncs.resourceId;
     bindings.initCap = stringFuncs.initCap;

src/helpers/runtime/index.ts

@@ -7,6 +7,7 @@ import { castToFhir } from './castToFhir';
 import { checkResourceId } from './checkResourceId';
 import { finalize } from './finalize';
 import { flashMerge } from './flashMerge';
+import { wait } from './wait';
 
 export type { CastToFhirOptions } from './castToFhir';
 export type { flashMerge, FlashMergeOptions } from './flashMerge';
@@ -15,5 +16,6 @@ export default {
   castToFhir,
   checkResourceId,
   flashMerge,
-  finalize
+  finalize,
+  wait
 };

src/helpers/runtime/wait.ts

@@ -0,0 +1,8 @@
+/**
+ * © Copyright Outburn Ltd. 2022-2024 All Rights Reserved
+ *   Project name: FUME-COMMUNITY
+ */
+
+export const wait = async (milliseconds: number) => {
+  return await new Promise(resolve => setTimeout(resolve, milliseconds));
+};